1
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Yang HI, Lee H, Ko J, An Y, Min G, Kim DM, Kim DH, Bae JH, Lim M, Choi SJ. Simulation of a randomly percolated CNT network for an improved analog physical unclonable function. Sci Rep 2024; 14:8811. [PMID: 38627523 PMCID: PMC11021546 DOI: 10.1038/s41598-024-59584-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 04/12/2024] [Indexed: 04/19/2024] Open
Abstract
Carbon nanotube networks (CNTs)-based devices are well suited for the physically unclonable function (PUF) due to the inherent randomness of the CNT network, but CNT networks can vary significantly during manufacturing due to various controllable process conditions, which have a significant impact on PUF performance. Therefore, optimization of process conditions is essential to have a PUF with excellent performance. However, because it is time-consuming and costly to fabricate directly under various conditions, we implement randomly formed CNT network using simulation and confirm the variable correlation of the CNT network optimized for PUF performance. At the same time, by implementing an analog PUF through simulation, we present a 2D patterned PUF that has excellent security and can compensate for error occurrence problems. To evaluate the performance of analog PUF, a new evaluation method different from the existing digital PUF is proposed, and the PUF performance is compared according to two process variables, CNT density and metallic CNT ratio, and the correlation with PUF performance is confirmed. This study can serve as a basis for research to produce optimized CNT PUF by applying simulation according to the needs of the process of forming a CNT network.
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Affiliation(s)
- Hyo-In Yang
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Hanbin Lee
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Jeonghee Ko
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Yulim An
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Gyeongsu Min
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Dong Myong Kim
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Dae Hwan Kim
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Jong-Ho Bae
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Meehyun Lim
- Mechatronics R&D Center, Samsung Electronics, Gyeonggi-Do, 18448, Korea.
| | - Sung-Jin Choi
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea.
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2
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Fukuhara M, Yokotsuka T, Samoto T, Kumadaki M, Takeda M, Hashida T. Radical electron-induced cellulose-semiconductors. Sci Rep 2024; 14:8692. [PMID: 38622278 PMCID: PMC11018785 DOI: 10.1038/s41598-024-59499-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 04/11/2024] [Indexed: 04/17/2024] Open
Abstract
Bio-semiconductors are expected to be similar to organic semiconductors; however, they have not been utilized in application yet. In this study, we show the origin of electron appearance, N- and S-type negative resistances, rectification, and switching effects of semiconductors with energy storage capacities of up to 418.5 mJ/m2 using granulated amorphous kenaf cellulose particles (AKCPs). The radical electrons in AKCP at 295 K appear in cellulose via the glycosidic bond C1-O1·-C4. Hall effect measurements indicate an n-type semiconductor with a carrier concentration of 9.89 × 1015/cm3, which corresponds to a mobility of 10.66 cm2/Vs and an electric resistivity of 9.80 × 102 Ωcm at 298 K. The conduction mechanism in the kenaf tissue was modelled from AC impedance curves. The light and flexible cellulose-semiconductors may open up new avenues in soft electronics such as switching effect devices and bio-sensors, primarily because they are composed of renewable natural compounds.
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Affiliation(s)
- Mikio Fukuhara
- New Industry Creation Hatchery Center, Tohoku University, Aoba, Sendai, 980-8579, Japan.
| | - Tomonori Yokotsuka
- New Industry Creation Hatchery Center, Tohoku University, Aoba, Sendai, 980-8579, Japan
| | - Tetsuo Samoto
- New Industry Creation Hatchery Center, Tohoku University, Aoba, Sendai, 980-8579, Japan
| | | | - Mitsuhiro Takeda
- National Institute of Technology, Sendai College, Natori, 981-1239, Japan
| | - Toshiyuki Hashida
- New Industry Creation Hatchery Center, Tohoku University, Aoba, Sendai, 980-8579, Japan
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3
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Kim Y, Kim H, Oh K, Park JH, Baek CK. Highly biomimetic spiking neuron using SiGe heterojunction bipolar transistors for energy-efficient neuromorphic systems. Sci Rep 2024; 14:8356. [PMID: 38594291 PMCID: PMC11004001 DOI: 10.1038/s41598-024-58962-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/05/2024] [Indexed: 04/11/2024] Open
Abstract
We demonstrate a highly biomimetic spiking neuron capable of fast and energy-efficient neuronal oscillation dynamics. Our simple neuron circuit is constructed using silicon-germanium heterojunction based bipolar transistors (HBTs) with nanowire structure. The HBT has a hysteresis window with steep switching characteristics and high current margin in the low voltage range, which enables a high spiking frequency (~ 245 kHz) with low energy consumption (≤ 1.37 pJ/spike). Also, gated structure achieves a stable balance in the activity of the neural system by incorporating both excitatory and inhibitory signal. Furthermore, inhibition of multiple strengths can be realized by adjusting the integration time according to the amplitude of the inhibitory signal. In addition, the spiking frequency can be tuned by mutually controlling the hysteresis window in the HBTs. These results ensure the sparse activity and homeostasis of neural networks.
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Affiliation(s)
- Yijoon Kim
- Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Hyangwoo Kim
- Future IT Innovation Laboratory, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Kyounghwan Oh
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Ju Hong Park
- Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Chang-Ki Baek
- Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
- Future IT Innovation Laboratory, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
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4
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Rana A, Sharma NK, Bera S, Yadav A, Gupta G, Rana AS. Tuning the plasmonic resonance in TiN refractory metal. Sci Rep 2024; 14:7905. [PMID: 38570529 PMCID: PMC10991307 DOI: 10.1038/s41598-024-55000-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 02/19/2024] [Indexed: 04/05/2024] Open
Abstract
Plasmonic coatings can absorb electromagnetic radiation from visible to far-infrared spectrum for the better performance of solar panels and energy saving smart windows. For these applications, it is important for these coatings to be as thin as possible and grown at lower temperatures on arbitrary substrates like glass, silicon, or flexible polymers. Here, we tune and investigate the plasmonic resonance of titanium nitride thin films in lower thicknesses regime varying from ~ 20 to 60 nm. High-quality crystalline thin films of route-mean-square roughness less than ~ 0.5 nm were grown on a glass substrate at temperature of ~ 200 °C with bias voltage of - 60 V using cathodic vacuum arc deposition. A local surface-enhanced-plasmonic-resonance was observed between 400 and 500 nm, which further shows a blueshift in plasmonic frequency in thicker films due to the increase in the carrier mobility. These results were combined with finite-difference-time-domain numerical analysis to understand the role of thicknesses and stoichiometry on the broadening of electromagnetic absorption.
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Affiliation(s)
- Anchal Rana
- Centre for Advanced Materials and Devices, School of Engineering and Technology, BML Munjal University, Sidhrawali, Gurugram, Haryana, 122413, India
| | - Neeraj Kumar Sharma
- Centre for Advanced Materials and Devices, School of Engineering and Technology, BML Munjal University, Sidhrawali, Gurugram, Haryana, 122413, India
| | - Sambhunath Bera
- Centre for Advanced Materials and Devices, School of Engineering and Technology, BML Munjal University, Sidhrawali, Gurugram, Haryana, 122413, India
| | - Aditya Yadav
- CSIR-National Physical Laboratory, K.S. Krishnan Marg, New Delhi, 110012, India
| | - Govind Gupta
- CSIR-National Physical Laboratory, K.S. Krishnan Marg, New Delhi, 110012, India
| | - Abhimanyu Singh Rana
- Centre for Advanced Materials and Devices, School of Engineering and Technology, BML Munjal University, Sidhrawali, Gurugram, Haryana, 122413, India.
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5
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Issakhov M, Khanjani M, Muratkhozhina A, Pourafshary P, Aidarova S, Sharipova A. Experimental and data-driven analysis for predicting nanofluid performance in improving foam stability and reducing mobility at critical micelle concentration. Sci Rep 2024; 14:7856. [PMID: 38570602 PMCID: PMC10991282 DOI: 10.1038/s41598-024-58609-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 04/01/2024] [Indexed: 04/05/2024] Open
Abstract
Application of surfactant-based foam flooding is an effective approach to reduce mobility and control early breakthrough. Despite the proper performance of surfactant-based foams in decreasing the channeling of the flooded gas and water, high pressure, high temperature, and high salinity of the reservoirs put some limitations on the foam flooding efficiency. Nanoparticles are used to improve the quality of the foams, enhance stability, and transcend the limitations. Although there are many benefits of using nanoparticles in foam flooding, their performance at surfactant critical micelle concentration (CMC) is not fully investigated and the optimum nanoparticle concentration is not specified. In this study, an experimental investigation using nanosilica with surfactants at CMC to improve the stability (half-life) and mobility reduction factor (MRF) has been conducted. Furthermore, data from the literature were collected and analyzed to evaluate the change in MRF and stability for a nanofluid-based foam at CMC. Both experimental results and literature data showed that application of nanofluid-based foam is a successful approach to develop a more stable foam with lower mobility. Nanoparticle (NP) concentration is the dominant parameter at different salinities and temperatures that affects foam flow through porous media. The range of 0.2-0.4 wt% is the optimum nanoparticle concentration to develop a strong foam with acceptable performance in controlling mobility.
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Affiliation(s)
| | - Maral Khanjani
- School of Mining and Geosciences, Nazarbayev University, Astana, Kazakhstan
| | | | - Peyman Pourafshary
- School of Mining and Geosciences, Nazarbayev University, Astana, Kazakhstan.
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6
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Sych T, Schlegel J, Barriga HMG, Ojansivu M, Hanke L, Weber F, Beklem Bostancioglu R, Ezzat K, Stangl H, Plochberger B, Laurencikiene J, El Andaloussi S, Fürth D, Stevens MM, Sezgin E. High-throughput measurement of the content and properties of nano-sized bioparticles with single-particle profiler. Nat Biotechnol 2024; 42:587-590. [PMID: 37308687 PMCID: PMC11021190 DOI: 10.1038/s41587-023-01825-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 05/10/2023] [Indexed: 06/14/2023]
Abstract
We introduce a method, single-particle profiler, that provides single-particle information on the content and biophysical properties of thousands of particles in the size range 5-200 nm. We use our single-particle profiler to measure the messenger RNA encapsulation efficiency of lipid nanoparticles, the viral binding efficiencies of different nanobodies, and the biophysical heterogeneity of liposomes, lipoproteins, exosomes and viruses.
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Affiliation(s)
- Taras Sych
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden
| | - Jan Schlegel
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden
| | - Hanna M G Barriga
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Miina Ojansivu
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Leo Hanke
- Division of Infectious Diseases, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Florian Weber
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden
- Department Medical Engineering, University of Applied Sciences Upper Austria, Linz, Austria
| | | | - Kariem Ezzat
- Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Herbert Stangl
- Medical University of Vienna, Center for Pathobiochemistry and Genetics, Institute of Medical Chemistry, Vienna, Austria
| | - Birgit Plochberger
- Department Medical Engineering, University of Applied Sciences Upper Austria, Linz, Austria
- LBG Ludwig Boltzmann Institute for Traumatology, Nanoscopy, Vienna, Austria
| | - Jurga Laurencikiene
- Lipid Laboratory, Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | | | - Daniel Fürth
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Molly M Stevens
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, UK
| | - Erdinc Sezgin
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.
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7
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Geng L, Wang P, Lin S, Shi R, Zhao J, Luo Z. On the nature of Co n±/0 clusters reacting with water and oxygen. Commun Chem 2024; 7:68. [PMID: 38555377 PMCID: PMC10981683 DOI: 10.1038/s42004-024-01159-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 03/22/2024] [Indexed: 04/02/2024] Open
Abstract
Bulk cobalt does not react with water at room temperature, but cobalt nanometals could yield corrosion at ambient conditions. Insights into the cobalt cluster reactions with water and oxygen enable us to better understand the interface reactivity of such nanometals. Here we report a comprehensive study on the gas-phase reactions of Con±/0 clusters with water and oxygen. All these Con±/0 clusters were found to react with oxygen, but only anionic cobalt clusters give rise to water dissociation whereas the cationic and neutral ones are limited to water adsorption. We elucidate the influences of charge states, bonding modes and dehydrogenation mechanism of water on typical cobalt clusters. It is unveiled that the additional electron of anionic Con- clusters is not beneficial to H2O adsorption, but allows for thermodynamics- and kinetics-favourable H atom transfer and dehydrogenation reactions. Apart from the charge effect, size effect and spin effect play a subtle role in the reaction process. The synergy of multiple metal sites in Con- clusters reduces the energy barrier of the rate-limiting step enabling hydrogen release. This finding of water dissociation on cobalt clusters put forward new connotations on the activity series of metals, providing new insights into the corrosion mechanism of cobalt nanometals.
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Affiliation(s)
- Lijun Geng
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Pengju Wang
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian, P. R. China
| | - Shiquan Lin
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Ruili Shi
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian, P. R. China
| | - Jijun Zhao
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian, P. R. China.
- Guangdong Basic Research Centre of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou, P. R. China.
| | - Zhixun Luo
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China.
- University of Chinese Academy of Sciences, Beijing, P. R. China.
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8
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Lee JH, Vu HD, Park MH, Huynh PT, Youn SW, Kwon DR. Microcurrent wave alleviates mouse intracranial arterial dolichoectasia development. Sci Rep 2024; 14:7496. [PMID: 38553592 PMCID: PMC10980802 DOI: 10.1038/s41598-024-58333-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 03/27/2024] [Indexed: 04/02/2024] Open
Abstract
Intracranial arterial dolichoectasia (IADE) is associated with the interaction of hypertension and inflammation, and microcurrent can be effective in hypertension. Therefore, this study aimed to investigate the therapeutic effect of microcurrent electrical stimulation in a mouse IADE model. This study randomly categorized 20 mice into five groups: group 1-C (healthy control), group 2-D (IADE model), group 3-M + D (microcurrent administration before nephrectomy and until brain surgery), group 4-D + M (microcurrent administration for 4 weeks following brain surgery), and group 5-M (microcurrent administration for 4 weeks). Cerebral artery diameter and thickness and cerebral arterial wall extracellular matrix components were assessed. Among the five groups, group 2-D showed significantly higher cerebral arterial wall diameter (117.79 ± 17.05 µm) and proportion of collagen (42.46 ± 14.12%) and significantly lower arterial wall thickness (9.31 ± 2.26 µm) and proportion of smooth muscle cell (SMC) and elastin in the cerebral arterial wall (SMC: 38.05 ± 10.32%, elastin: 11.11 ± 6.97%). Additionally, group 4-D + M exhibited a non-significantly lower diameter (100.28 ± 25.99 µm) and higher thickness (12.82 ± 5.17 µm). Group 5-M demonstrated no evidence of toxicity in the liver and brain. The pilot study revealed that microcurrent is effective in preventing IADE development, although these beneficial effects warrant further investigation.
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Affiliation(s)
- Jae Hee Lee
- Department of Rehabilitation Medicine, Daegu Catholic University School of Medicine, Daegu, South Korea
| | - Huy Duc Vu
- Department of Radiology, Kyungpook National University, Daegu, South Korea
| | - Min Hee Park
- Department of Radiology, Kyungpook National University, Daegu, South Korea
| | - Phuong Tu Huynh
- Department of Radiology, Kyungpook National University, Daegu, South Korea
| | - Sung Won Youn
- Department of Radiology, Kyungpook National University, Daegu, South Korea.
| | - Dong Rak Kwon
- Department of Rehabilitation Medicine, Daegu Catholic University School of Medicine, Daegu, South Korea.
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9
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Upadhyay S, Assadullah I, Tomar R. Hydrothermally grown Cu doped NiMnO 3 perovskite nanostructures suitable for optoelectronic, photoluminescent and electrochemical properties. Sci Rep 2024; 14:7415. [PMID: 38548732 PMCID: PMC10978829 DOI: 10.1038/s41598-024-52132-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 01/14/2024] [Indexed: 04/01/2024] Open
Abstract
Transition metal-based perovskites have emerged as highly promising and economically advantageous semiconductor materials due to their exceptional performance in optoelectronics, photovoltaic, photocatalysis, and photoluminescence. In this study, we employed a microwave-assisted hydrothermal process to produce a Cu-doped NiMnO3 nanocomposite electrode material. The appearance of a peak corresponding to the (110) plane with a 2θ value of 36.6° confirmed the growth of the rhombohedral NiMnO3 crystal structure. The presence of metal-oxygen bonds in NiMnO3 was confirmed through FTIR spectra. XPS validates the chemical composition, providing additional support for the results obtained from XRD and FT-IR analyses. FE-SEM affirmed the anisotropic growth of small sphere-like structures that agglomerated to form broccoli-like shapes. Cu doping modified the band gap, reducing it from 2.2 to 1.7 eV and enhancing its photoluminescent (PL) activity by introducing defects. The increase in PL intensity (visible light luminescent intensity) can be attributed to a concurrent rise in complex defects and the rate of recombination of electron-hole pairs. Finally, the electrochemical activity demonstrated the pseudo-capacitor behavior of the synthesized material, with capacitance values increasing as the copper (Cu) content in the parent lattice increased.
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Affiliation(s)
- Shilpi Upadhyay
- School of Studies in Chemistry, Jiwaji University, Gwalior, M.P, 474011, India
| | - Insaaf Assadullah
- School of Studies in Chemistry, Jiwaji University, Gwalior, M.P, 474011, India.
| | - Radha Tomar
- School of Studies in Chemistry, Jiwaji University, Gwalior, M.P, 474011, India
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10
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Savari MN. Fe 3O 4@Chitosan@ZIF-8@RVG29, an anti-glioma nanoplatform guided by fixed and activated by alternating magnetic field. Sci Rep 2024; 14:7000. [PMID: 38523150 PMCID: PMC10961307 DOI: 10.1038/s41598-024-57565-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/19/2024] [Indexed: 03/26/2024] Open
Abstract
There is considerable interest in developing anti-glioma nanoplatforms. They make the all-in-one combination of therapies possible. Here we show how the selective Glioblastoma multiforme (GBM) cell killing of the here-established nanoplatforms increased after each coating and how the here-established vibration-inducing Alternating magnetic field (AMF) decreased the treatment time from 72 h to 30 s. Thanks to their magnetite core, these nanoplatforms can be guided to the tumor's specific site by a Fixed magnetic field, they bypass the Blood-Brain Barrier (BBB) and accumulate at the tumor site thanks to the RVG29 bonding to the G-protein on the ion-gated channel receptor known as the nicotinic acetylcholine receptor (nAchR), which expresses on BBB cells and overexpresses on GBM cells, and thanks to the positive charge gained by both chitosan and RVG29's peptide. Both ZIF-8 and its mediate adherence, Chitosan increases the drug loading capacity that stimuli response to the tumor's acidic environment. The Zn2+ ions generated from ZIF-8 sustained degradation in such an environment kill the GBM cells. Dynamic Light Scattering (DLS) evaluated these nanoplatform's mean size 155 nm indicating their almost optimum size for brain applications. Based on their elements' intrinsic properties, these nanoplatforms can enhance and combine other adjuvant therapies.
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11
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Cunha Matosinhos R, Frézard F, Mendes Silva Araújo S, Magalhães Barbosa A, de Souza IF, de Souza Filho JD, de Souza J, Corrêa Oliveira Bahia AP, Ietta F, Magnani A, Saúde-Guimarães DA. Development and characterization of liposomal formulations containing sesquiterpene lactones for the treatment of chronic gout. Sci Rep 2024; 14:6991. [PMID: 38523180 PMCID: PMC10961318 DOI: 10.1038/s41598-024-57663-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 03/20/2024] [Indexed: 03/26/2024] Open
Abstract
Gout and hyperuricemia are characterized by high uric acid levels, and their treatment involves medications that have adverse effects. In this study, we evaluated oral liposomal formulations with eremantholide C and goyazensolide as a novel approach to reduce the toxicity associated with these substances while maintaining their anti-hyperuricemic activity. We characterized the formulations and evaluated them based on encapsulation efficiency and stability over 12 months and under simulated physiological environments. We determined the toxicity of the liposomal formulations in Caco-2 cells and the anti-hyperuricemic activity in rats. The formulations exhibited nanometric size, a narrow size distribution, and a negative zeta potential, indicating their stability and uniformity. The efficient encapsulation of the sesquiterpene lactones within the liposomes emphasizes their potential for sustained release and therapeutic efficacy. Stability evaluation revealed a small decrease in the eremantholide C concentration and a remarkable stability in the goyazensolide concentration. In Caco-2 cells, the liposomes did not exert toxicity, but did exhibit an antiproliferative effect. In vivo assays demonstrated that the liposomes reduced serum uric acid levels. Our study represents an advancement in gout and hyperuricemia treatment. The liposomal formulations effectively reduced the toxicity associated with the sesquiterpene lactones while maintaining their therapeutic effects.
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Affiliation(s)
- Rafaela Cunha Matosinhos
- Laboratório de Plantas Medicinais (LAPLAMED), Programa de Pós-Graduação em Ciências Farmacêuticas (CiPharma), Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, 35400-000, Brazil
| | - Frédéric Frézard
- Laboratório de Biofísica e Sistemas Nanoestruturados (LabNano), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Sabrina Mendes Silva Araújo
- Laboratório de Biofísica e Sistemas Nanoestruturados (LabNano), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Andressa Magalhães Barbosa
- Laboratório de Plantas Medicinais (LAPLAMED), Programa de Pós-Graduação em Ciências Farmacêuticas (CiPharma), Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, 35400-000, Brazil
| | - Isabela Fernanda de Souza
- Laboratório de Plantas Medicinais (LAPLAMED), Programa de Pós-Graduação em Ciências Farmacêuticas (CiPharma), Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, 35400-000, Brazil
| | - José Dias de Souza Filho
- Laboratório Multiusuário de Caracterização de Moléculas (LMCM), Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, 35400-000, Brazil
| | - Jacqueline de Souza
- Laboratório de Controle de Qualidade de Insumos, Fármacos e Medicamentos (LCQ), Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, 35400-000, Brazil
| | - Ana Paula Corrêa Oliveira Bahia
- Laboratório de Biofísica e Sistemas Nanoestruturados (LabNano), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Francesca Ietta
- Dipartimento Scienze della Vita, Università degli Studi di Siena, 53100, Siena, Tuscany, Italy
| | - Agnese Magnani
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, 53100, Siena, Tuscany, Italy
| | - Dênia Antunes Saúde-Guimarães
- Laboratório de Plantas Medicinais (LAPLAMED), Programa de Pós-Graduação em Ciências Farmacêuticas (CiPharma), Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, 35400-000, Brazil.
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12
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Jin Y, Zhao Z, Chen J, Chen W, Wang G, Yin Z. Preparation of high-resolution micro/nano dot array by electrohydrodynamic jet printing with enhanced uniformity. Sci Rep 2024; 14:6932. [PMID: 38521866 PMCID: PMC10960794 DOI: 10.1038/s41598-024-57225-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 03/15/2024] [Indexed: 03/25/2024] Open
Abstract
The high-resolution array is the basic structure of most kinds of microelectronics. Electrohydrodynamic jet (E-Jet) printing technology is widely applied in manufacturing array structures with high resolution, high material compatibility and multi-modal printing. It is still challenging to acquire high uniformity of printed array with micro-nanometer resolution, which greatly influences the performance and lifetime of the microelectronics. In this paper, to improve the uniformity of the printed array, the influence of each parameter on the uniformity of the E-jet printed dot array is studied on the cobuilt NEJ-E/P200 experimental platform, finding the applied voltage plays the most important role in maintaining the uniformity of the printed array. By appropriately adjusting the printing parameters, the dot arrays with different resolutions from 500 pixels per inch (PPI) to 17,000 PPI are successfully printed. For arrays below and over 10,000 PPI, the deviations of the uniformity are within 5% and 10% respectively. In this work, the dot array over 15,000 PPI is first implemented using E-jet printing. The conclusions acquired by experimental analysis of dot array printing process are of great importance in high resolution array printing as it provides practical guidance for parameters adjustment.
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Affiliation(s)
- Yiwei Jin
- The State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, HuaZhong University of Science and Technology, Wuhan, 430070, China
| | - Ziwei Zhao
- The State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, HuaZhong University of Science and Technology, Wuhan, 430070, China
| | - Jiankui Chen
- The State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, HuaZhong University of Science and Technology, Wuhan, 430070, China.
| | - Wei Chen
- The State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, HuaZhong University of Science and Technology, Wuhan, 430070, China.
| | - Guozhen Wang
- The State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, HuaZhong University of Science and Technology, Wuhan, 430070, China
| | - Zhouping Yin
- The State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, HuaZhong University of Science and Technology, Wuhan, 430070, China
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13
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Stracke K, Evans JD. The rise of data repositories in materials chemistry. Commun Chem 2024; 7:63. [PMID: 38519628 PMCID: PMC10959999 DOI: 10.1038/s42004-024-01143-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 03/07/2024] [Indexed: 03/25/2024] Open
Abstract
FAIR (findable, accessible, interoperable and reusable) data practices are necessary to expedite knowledge discovery, encourage collaboration, and optimise resource use, fostering a robust foundation for future scientific progress. Here, the authors explore the use of FAIR practices to advance materials chemistry research, examining key repositories, highlighting their role in sharing scientific data, and examining the accessibility of these approaches.
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Affiliation(s)
- Konstantin Stracke
- School of Physics, Chemistry and Earth Sciences, The University of Adelaide, North Terrace, Adelaide, 5005, SA, Australia
| | - Jack D Evans
- School of Physics, Chemistry and Earth Sciences, The University of Adelaide, North Terrace, Adelaide, 5005, SA, Australia.
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14
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Oluwasina OO, Adelodun AA, Oluwasina OO, Duarte HA, Olusegun SJ. Experimental and computational studies of crystal violet removal from aqueous solution using sulfonated graphene oxide. Sci Rep 2024; 14:6207. [PMID: 38485952 PMCID: PMC10940666 DOI: 10.1038/s41598-024-54499-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 02/13/2024] [Indexed: 03/18/2024] Open
Abstract
Positively charged contaminants can be strongly attracted by sulfanilic acid-functionalized graphene oxide. Here, sulfonated graphene oxide (GO-SO3H) was synthesized and characterized for cationic crystal violet (CV) adsorption. We further studied the effect of pH, initial concentration, and temperature on CV uptake. The highest CV uptake occurred at pH 8. A kinetic study was also carried out by applying the pseudo-first-order and pseudo-second-order models. The pseudo-second-order's adsorption capacity (qe) value was much closer to the experimental qe (qeexp:0.13, qecal:0.12) than the pseudo-first-order model (qeexp:0.13, qecal:0.05). The adsorption performance was accomplished rapidly since the adsorption equilibrium was closely obtained within 30 min. Furthermore, the adsorption capacity was significantly increased from 42.85 to 79.23%. The maximum adsorption capacities of GO-SO3H where 97.65, 202.5, and 196.2 mg·g-1 for CV removal at 298, 308, and 328 K, respectively. The Langmuir and Freundlich adsorption isotherms were applied to the experimental data. The data fit well into Langmuir and Freundlich except at 298 K, where only Langmuir isotherm was most suitable. Thermodynamic studies established that the adsorption was spontaneous and endothermic. The adsorption mechanism was revealed by combining experimental and computational methods. These findings suggest that GO-SO3H is a highly adsorbent for removing harmful cationic dye from aqueous media.
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Affiliation(s)
- Olayinka Oluwaseun Oluwasina
- Department of Marine Science and Technology, The Federal University of Technology, P.M.B. 704, Akure, 340110, Nigeria.
| | - Adedeji Adebukola Adelodun
- Department of Marine Science and Technology, The Federal University of Technology, P.M.B. 704, Akure, 340110, Nigeria
- Department of Chemistry, University of Copenhagen, Universitet sparken 5, 2100, Copenhagen Ø, Denmark
| | | | - Helio A Duarte
- Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Sunday Joseph Olusegun
- Department of Environmental Biotechnology, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Gliwice, Poland
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, East Lansing, MI, 48824-1322, USA
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15
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Stanojević N, Demić A, Vuković N, Dean P, Ikonić Z, Indjin D, Radovanović J. Effects of background doping, interdiffusion and layer thickness fluctuation on the transport characteristics of THz quantum cascade lasers. Sci Rep 2024; 14:5641. [PMID: 38453978 PMCID: PMC10920758 DOI: 10.1038/s41598-024-55700-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 02/27/2024] [Indexed: 03/09/2024] Open
Abstract
In this work, we investigate the effects of n and p-type background doping, interface composition diffusion (interdiffusion) of the barrier material and layer thickness variation during molecular beam epitaxy (MBE) growth on transport characteristics of terahertz-frequency quantum cascade lasers (THz QCLs). We analysed four exemplary structures: a bound-to-continuum design, hybrid design, LO-phonon design and a two-well high-temperature performance LO-phonon design. The exemplary bound-to-continuum design has shown to be the most sensitive to the background doping as it stops lasing for concentrations around 1.0 · 10 15 - 2.0 · 10 15 cm- 3 . The LO-phonon design is the most sensitive to growth fluctuations during MBE and this is critical for novel LO-phonon structures optimised for high-temperature performance. We predict that interdiffusion mostly affects current density for designs with narrow barrier layers and higher Al composition. We show that layer thickness variation leads to significant changes in material gain and current density, and in some cases to the growth of nonfunctional devices. These effects serve as a beacon of fundamental calibration steps required for successful realisation of THz QCLs.
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Affiliation(s)
- Novak Stanojević
- School of Electrical Engineering, University of Belgrade, Belgrade, 11000, Serbia.
- Vlatacom Institute of High Technologies, Belgrade, 11000, Serbia.
| | - Aleksandar Demić
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Nikola Vuković
- School of Electrical Engineering, University of Belgrade, Belgrade, 11000, Serbia
| | - Paul Dean
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Zoran Ikonić
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Dragan Indjin
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Jelena Radovanović
- School of Electrical Engineering, University of Belgrade, Belgrade, 11000, Serbia
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16
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Xu Z, Lisha X, Yi L, Yunjun M, Luocheng C, Anqi Z, Kuibo Y, Xiaolu X, Shaozhen L, Xuecheng S, Yifu Z. Highly stable and antifungal properties on the oilseed rape of Cu 3(MoO 4) 2(OH) 2 nanoflakes prepared by simple aqueous precipitation. Sci Rep 2024; 14:5235. [PMID: 38433219 PMCID: PMC10909880 DOI: 10.1038/s41598-024-53612-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/02/2024] [Indexed: 03/05/2024] Open
Abstract
In the last few decades, nanoparticles have been a prominent topic in various fields, particularly in agriculture, due to their unique physicochemical properties. Herein, molybdenum copper lindgrenite Cu3(MoO4)2(OH)2 (CM) nanoflakes (NFs) are synthesized by a one-step reaction involving α-MoO3 and CuCO3⋅Cu(OH)2⋅xH2O solution at low temperature for large scale industrial production and developed as an effective antifungal agent for the oilseed rape. This synthetic method demonstrates great potential for industrial applications. Infrared spectroscopy and X-ray diffraction (XRD) results reveal that CM samples exhibit a pure monoclinic structure. TG and DSC results show the thermal stable properties. It can undergo a phase transition form copper molybdate (Cu3Mo2O9) at about 300 °C. Then Cu3Mo2O9 nanoparticles decompose into at CuO and MoO3 at 791 °C. The morphology of CM powder is mainly composed of uniformly distributed parallelogram-shaped nanoflakes with an average thickness of about 30 nm. Moreover, the binding energy of CM NFs is measured to be 2.8 eV. To assess the antifungal properties of these materials, both laboratory and outdoor experiments are conducted. In the pour plate test, the minimum inhibitory concentration (MIC) of CM NFs against Sclerotinia sclerotiorum (S. sclerotiorum) is determined to be 100 ppm, and the zone of inhibiting S. sclerotiorum is 14 mm. When the concentration is above 100 nm, the change rate of the hyphae circle slows down a little and begins to decrease until to 200 ppm. According to the aforementioned findings, the antifungal effects of a nano CM NFs solution are assessed at different concentrations (0 ppm (clear water), 40 ppm, and 80 ppm) on the growth of oilseed rape in an outdoor setting. The results indicate that the application of CM NFs led to significant inhibition of S. sclerotiorum. Specifically, when the nano CM solution was sprayed once at the initial flowering stage at a concentration of 80 ppm, S. sclerotiorum growth was inhibited by approximately 34%. Similarly, when the solution was sprayed once at the initial flowering stage and once at the rape pod stage, using a concentration of 40 ppm, a similar level of inhibition was achieved. These outcomes show that CM NFs possess the ability to bind with more metal ions due to their larger specific surface area. Additionally, their semiconductor physical properties enable the generation of reactive oxygen species (ROS). Therefore, CM NFs hold great potential for widespread application in antifungal products.
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Affiliation(s)
- Zhao Xu
- School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan, 430023, Hubei, China
| | - Xu Lisha
- School of Physics, Hubei University, Wuhan, 430062, China
| | - Liu Yi
- School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan, 430023, Hubei, China
| | - Mei Yunjun
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, Hubei, China
| | - Chen Luocheng
- Hubei Sino-Australian Nano Material Technology Co., Ltd., Guangshui, 432700, China
| | - Zheng Anqi
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, People's Republic of China
| | - Yin Kuibo
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, People's Republic of China
| | - Xiao Xiaolu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, 430062, Hubei, China
| | - Li Shaozhen
- School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan, 430023, Hubei, China.
| | - Sun Xuecheng
- Micro-Elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhang Yifu
- Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.
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17
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Qureshi UUR, Basir S, Mallek F, Hamam H. Polarization and incident angle independent multifunctional tunable terahertz metasurface based on graphene. Sci Rep 2024; 14:5118. [PMID: 38429341 PMCID: PMC10907596 DOI: 10.1038/s41598-024-55676-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/26/2024] [Indexed: 03/03/2024] Open
Abstract
Motivated by the imperative demand for design integration and miniaturization within the terahertz (THz) spectrum, this study presents an innovative solution to the challenges associated with singular functionality, limited application scope, and intricate structures prevalent in conventional metasurfaces. The proposed multifunctional tunable metasurface leverages a hybridized grapheme-metal structure, addressing critical limitations in existing designs. Comprising three distinct layers, namely a graphene-gold resonance layer, a Topas dielectric layer, and a bottom gold film reflective layer, this terahertz metasurface exhibits multifunctionality that is both polarization and incident-angle independent. The metasurface demonstrates a broadband circular dichroism (CD) function when subjected to incident circularly polarized waves. In contrast, under linear incidence, the proposed design achieves functionalities encompassing linear dichroism (LD) and polarization conversion. Remarkably, graphene's chemical potential and the incident light's state can be manipulated to tune each functional aspect's intensity finely. The proposed tunable multifaceted metasurface showcases significant referential importance within the terahertz spectrum, mainly contributing to advancing CD metamirrors, chiral photodetectors, polarization digital imaging systems, and intelligent switches.
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Affiliation(s)
- Ubaid Ur Rahman Qureshi
- Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China.
| | - Shahid Basir
- School of Engineering and Applied Sciences, ISRA University, Islamabad, Pakistan
| | - Fatma Mallek
- Faculty of Engineering, Uni de Moncton, Moncton, NB, E1A3E9, Canada
| | - Habib Hamam
- Faculty of Engineering, Uni de Moncton, Moncton, NB, E1A3E9, Canada
- International Institute of Technology and Management (IITG), Avenue des Grandes Ecoles, Libreville, Gabon
- Department of Electrical and Electronic Engineering Science, School of Electrical Engineering, University of Johannesburg, Johannesburg, 2006, South Africa
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18
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Mahdlou Z, Dehkharghani RA, Niazi A, Tamaddon A, Ebrahimi MT. Co-sonicated coacervation for high-efficiency green nanoencapsulation of phytosterols by colloidal non-biotoxic solid lipid nanoparticles. Sci Rep 2024; 14:4671. [PMID: 38409285 PMCID: PMC10897223 DOI: 10.1038/s41598-024-54178-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/09/2024] [Indexed: 02/28/2024] Open
Abstract
Plant sterols are used as a supplement or an additive to reduce LDL cholesterol. The poor dispersibility and instability of phytosterols are the main limitations of their application. So, we tried to overcome these problems through nanoencapsulation of them with colloidal natural RSs (SLNs) using an effective approach to achieve higher efficiency and less intrinsic coagulation. Phytosterols extracted from flax seeds oil with caffeine by a new method were encapsulated with a stable colloid of sheep fat and ostrich oil (1:2), soy lecithin, and glucose through co-sonicated coacervation. Characterization of the obtained SLNs was conducted using FTIR, UV-Vis, SEM, DLS, and GC analysis. The three-factor three-level Behnken design (BBD) was used to prioritize the factors affecting the coacervation process to optimize particle size and loading capacity of SLNs. Operational conditions were examined, revealing that the size of SLNs was below 100 nm, with a phytosterols content (EE %) of 85.46% with high positive zeta potential. The nanocapsules' anti-microbial activity and drug-release behavior were then evaluated using the CFU count method and Beer-Lambert's law, respectively. The controlled release of nanocapsules (below 20%) at ambient temperature has been tested. The stability of nano-encapsulated phytosterols was investigated for six months. All results show that this green optimal coacervation is a better way than conventional methods to produce stable SLNs for the nanoencapsulation of phytosterols.
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Affiliation(s)
- Zolfaghar Mahdlou
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, P.O. Box 1465613111, Tehran, Iran
| | - Rahebeh Amiri Dehkharghani
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, P.O. Box 1465613111, Tehran, Iran.
| | - Ali Niazi
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, P.O. Box 1465613111, Tehran, Iran.
| | - Atefeh Tamaddon
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, P.O. Box 1465613111, Tehran, Iran
| | - Maryam Tajabadi Ebrahimi
- Department of Biology, Faculty of Sciences, Central Tehran Branch, Islamic Azad University, Tehran, Iran
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19
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Ramirez-Labrada A, Santiago L, Pesini C, Arrieta M, Arias M, Calvo Pérez A, Ciulla MG, Forouharshad M, Pardo J, Gálvez EM, Gelain F. Multiparametric in vitro and in vivo analysis of the safety profile of self-assembling peptides. Sci Rep 2024; 14:4395. [PMID: 38388659 PMCID: PMC10883997 DOI: 10.1038/s41598-024-54051-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
Self-assembling peptides (SAPs) have gained significant attention in biomedicine because of their unique properties and ability to undergo molecular self-assembly driven by non-covalent interactions. By manipulating their composition and structure, SAPs can form well-ordered nanostructures with enhanced selectivity, stability and biocompatibility. SAPs offer advantages such as high chemical and biological diversity and the potential for functionalization. However, studies concerning its potentially toxic effects are very scarce, a limitation that compromises its potential translation to humans. This study investigates the potentially toxic effects of six different SAP formulations composed of natural amino acids designed for nervous tissue engineering and amenable to ready cross-linking boosting their biomechanical properties. All methods were performed in accordance with the relevant guidelines and regulations. A wound-healing assay was performed to evaluate how SAPs modify cell migration. The results in vitro demonstrated that SAPs did not induce genotoxicity neither skin sensitization. In vivo, SAPs were well-tolerated without any signs of acute systemic toxicity. Interestingly, SAPs were found to promote the migration of endothelial, macrophage, fibroblast, and neuronal-like cells in vitro, supporting a high potential for tissue regeneration. These findings contribute to the development and translation of SAP-based biomaterials for biomedical applications.
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Affiliation(s)
- Ariel Ramirez-Labrada
- Immunotherapy, Cytotoxicity, Inflammation and Cancer, Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain.
- Nanotoxicology and Immunotoxicology Unit (UNATI), Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain.
- Center for Biomedical Research in the Network of Infectious Diseases (CIBERINFEC), Carlos III Health Institute, Zaragoza, Spain.
| | | | - Cecilia Pesini
- Immunotherapy, Cytotoxicity, Inflammation and Cancer, Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
- Center for Biomedical Research in the Network of Infectious Diseases (CIBERINFEC), Carlos III Health Institute, Zaragoza, Spain
| | - Marta Arrieta
- WorldPathol Global United S.A. (WGUSA), Zaragoza, Spain
| | - Maykel Arias
- Immunotherapy, Cytotoxicity, Inflammation and Cancer, Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
- Center for Biomedical Research in the Network of Infectious Diseases (CIBERINFEC), Carlos III Health Institute, Zaragoza, Spain
| | - Adanays Calvo Pérez
- Immunotherapy, Cytotoxicity, Inflammation and Cancer, Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
- Department of Microbiology, Preventive Medicine and Public Health, University of Zaragoza, Zaragoza, Spain
| | - Maria Gessica Ciulla
- Center for Nanomedicine and Tissue Engineering (CNTE), ASST Grande Ospedale Metropolitano Niguarda, 20162, Milan, Italy
| | - Mahdi Forouharshad
- Center for Nanomedicine and Tissue Engineering (CNTE), ASST Grande Ospedale Metropolitano Niguarda, 20162, Milan, Italy
| | - Julian Pardo
- Immunotherapy, Cytotoxicity, Inflammation and Cancer, Aragón Health Research Institute (IIS Aragón), Biomedical Research Centre of Aragón (CIBA), Zaragoza, Spain
- Center for Biomedical Research in the Network of Infectious Diseases (CIBERINFEC), Carlos III Health Institute, Zaragoza, Spain
- Department of Microbiology, Preventive Medicine and Public Health, University of Zaragoza, Zaragoza, Spain
| | - Eva M Gálvez
- Center for Biomedical Research in the Network of Infectious Diseases (CIBERINFEC), Carlos III Health Institute, Zaragoza, Spain
- Instituto de Carboquimica (ICB), CSIC, Zaragoza, Spain
| | - Fabrizio Gelain
- Center for Nanomedicine and Tissue Engineering (CNTE), ASST Grande Ospedale Metropolitano Niguarda, 20162, Milan, Italy.
- Tissue Engineering Unit-ISBREMIT-IRCCS Casa Sollievo Della Sofferenza, Via Cappuccini 1, 71013, San Giovanni Rotondo, FG, Italy.
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20
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Remmo A, Kosch O, Kampen L, Ludwig A, Wiekhorst F, Löwa N. Counting cells in motion by quantitative real-time magnetic particle imaging. Sci Rep 2024; 14:4253. [PMID: 38378785 PMCID: PMC10879211 DOI: 10.1038/s41598-024-54784-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/16/2024] [Indexed: 02/22/2024] Open
Abstract
Magnetic Particle Imaging (MPI) is an advanced and powerful imaging modality for visualization and quantitative real-time detection of magnetic nanoparticles (MNPs). This opens the possibility of tracking cells in vivo once they have been loaded by MNPs. Imaging modalities such as optical imaging, X-ray computed tomography (CT), positron emission tomography (PET), single photon emission computed tomography (SPECT), and magnetic resonance imaging (MRI) face limitations, from depth of penetration and radiation exposure to resolution and quantification accuracy. MPI addresses these challenges, enabling radiation-free tracking of MNP-loaded cells with precise quantification. However, the real-time tracking of MNP-loaded cells with MPI has not been demonstrated yet. This study establishes real-time quantitative tracking of MNP-loaded cells. Therefore, THP-1 monocytes were loaded with three different MNP systems, including the MPI gold standard Resovist and Synomag. The real-time MPI experiments reveal different MPI resolution behaviors of the three MNP systems after cellular uptake. Real-time quantitative imaging was achieved by time-resolved cell number determination and comparison with the number of inserted cells. About 95% of the inserted cells were successfully tracked in a controlled phantom environment. These results underline the potential of MPI for real-time investigation of cell migration and interaction with tissue in vivo.
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Affiliation(s)
- Amani Remmo
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587, Berlin, Germany.
| | - Olaf Kosch
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587, Berlin, Germany
| | - Lena Kampen
- Department of Cardiology, Angiology and Intensive Care Medicine, Deutsches Herzzentrum der Charité, Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universitätzu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Antje Ludwig
- Department of Cardiology, Angiology and Intensive Care Medicine, Deutsches Herzzentrum der Charité, Charitéplatz 1, 10117, Berlin, Germany
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universitätzu Berlin, Charitéplatz 1, 10117, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Frank Wiekhorst
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587, Berlin, Germany
| | - Norbert Löwa
- Physikalisch-Technische Bundesanstalt, Abbestr. 2-12, 10587, Berlin, Germany
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21
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Ghorapade V, Wang WC. Electro-hydrodynamic programming reshapes liquid crystal dynamics in free-form director fields. Sci Rep 2024; 14:4226. [PMID: 38379092 PMCID: PMC10879181 DOI: 10.1038/s41598-024-54873-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 02/17/2024] [Indexed: 02/22/2024] Open
Abstract
This study unveils a groundbreaking technique leveraging the superposition of electric field vectors to manipulate liquid crystals (LCs). Demonstrated through a simple configuration of four independent electrodes at the corners of a rectangular enclosure, notably, this configuration can be further simplified or modified as needed, showcasing the versatility of the approach. Significantly, the design showcased in the paper eliminates the need for an alignment layer, highlighting the versatility of the method. Through nuanced adjustments in waveforms, amplitudes, frequencies, and phases in AC or DC from these electrodes, precise control over LC shape deformation and dynamic phase transformation is achieved in both temporal and spatial dimensions. In contrast to traditional methods, the approach presented here abolishes alignment layers and intricate electrode-array systems, opting for a streamlined configuration with varying AC frequencies and DC electric signals. This innovative methodology, founded on simplified governing equations from Q-tensor hydrodynamics theory, demonstrates true 3D control over LCs, displaying efficiency in electrode usage beyond current arrays. The study's contributions extend to temporal control emphasis, superposition techniques, and the elimination of fixed electrodes, promising unprecedented possibilities for programming LC materials and advancing the field of programmable LC devices.
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Affiliation(s)
- Vinayak Ghorapade
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC
| | - Wei-Chih Wang
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC.
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC.
- Department of Electrical and Computer Engineering, University of Washington, Seattle Washington, 98195, USA.
- Department of Mechanical Engineering, University of Washington, Seattle Washington, 98195, USA.
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22
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Taha M, Khalid A, Elmahgary MG, Medany SS, Attia YA. Fabricating a 3D floating porous PDMS - Ag/AgBr decorated g-C 3N 4 nanocomposite sponge as a re-usable visible light photocatalyst. Sci Rep 2024; 14:4184. [PMID: 38378707 PMCID: PMC10879194 DOI: 10.1038/s41598-024-54500-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/13/2024] [Indexed: 02/22/2024] Open
Abstract
In this study, polymeric graphitic carbon nitride (g-C3N4) semiconductors was synthesized via a thermal condensation method. Subsequently, Ag/AgBr nanoparticles with varying ratios were decorated onto the g-C3N4 surface using the water/oil emulsion method. The resulting nanocomposites were characterized using XRD for phase identification and structural analysis, HR-TEM and SEM&EDAX for morphological structure, particle size, and elemental composition analysis, and XPS for investigating the chemical state and electronic structure. The impact of Ag/AgBr content on the optical properties of g-C3N4 were also studied such as (optical bandgap (Eg), refractive index (n), extinction coefficient (k), optical conductivity (σopt) and dielectric function (ε*)), Electrochemical impedance spectroscopy (EIS), PL spectroscopy and Chrono-amperometric investigations were conducted to assess the charge transfer capabilities and long-term durability of the prepared nanocomposites. The results revealed a reduction in Ag/AgBr particle size with an increase in g-C3N4 content, accompanied by a decrease in the optical bandgap from 2.444 eV to 2.393 eV. Furthermore, the nanocomposites exhibited enhanced degradation efficiencies of RhB dye, with the highest tested content of Ag/AgBr achieving 100% degradation after 120 min of irradiation. However, the challenge of catalyst separation after the degradation process remained. To address this issue, we developed a novel approach by impregnating Ag/AgBr@g-C3N4 photocatalyst onto a floating porous sponge using a simple sugar-template technique, offering potential as a reusable photocatalyst material. Furthermore, the 3D PDMS - Ag/AgBr@g-C3N4 photocatalyst was evaluated and found to maintain nearly the same photocatalytic efficiency for up to 5 consecutive cycles.
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Affiliation(s)
- Mohamed Taha
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt.
| | - A Khalid
- Department of Basic Engineering Sciences, Faculty of Engineering (Shoubra), Benha University, Benha, Egypt
| | - Maryam G Elmahgary
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Chemical Engineering Department, The British University in Egypt (BUE), Elshrouk City, Cairo, Egypt
| | - Shymaa S Medany
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Yasser A Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
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23
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Shabib Akhtar M, Chandrasekaran K, Saminathan S, Rajalingam SR, Mohsin N, Awad Alkarem Ahmed KA, Alhazmi Y, Walbi IA, Abdel-Wahab BA, Gholap AD, Faiyazuddin M, Sundaram G. Nanoengineered chitosan functionalized titanium dioxide biohybrids for bacterial infections and cancer therapy. Sci Rep 2024; 14:3705. [PMID: 38355697 PMCID: PMC10867112 DOI: 10.1038/s41598-024-52847-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 01/24/2024] [Indexed: 02/16/2024] Open
Abstract
Nanoengineered chitosan functionalized titanium dioxide biohybrids (CTiO2@NPs) were prepared with Amomum subulatum Roxb extract via one-pot green method and assessed by UV-Vis spectroscopy, XRD, SEM and EDAX analyses. As revealed by XRD pattern, the nanohybrids exhibits a rutile TiO2 crystallites around 45 nm in size. The emergence of the Ti-O-Ti bond is identified by observing a peak between 400 and 800 cm-1. A wide bandgap (4.8 eV) has been observed in CTiO2@NPs, due to the quantum confinement effects and the oxygen vacancies reveal the intriguing potential of developed nanohybrids for various applications. Surface flaws were identified by observing an emission band at 382, 437, 482, 517, and 556 nm. They also exhibit better antibacterial performances using well diffusion method against Staphylococcus aureus, Bacillus substilis, Klebsiella pneumonia, and Escherichia coli. CTiO2@NPs were discovered to have free radical scavenging activity on DPPH analysis and exhibit IC50 value as 95.80 μg/mL and standard (Vitamin C) IC50 is 87.62 μg/mL. CTiO2@NPs exhibited better anticancer properties against the osteosarcoma (MG-63) cell line. All these findings suggest that there is a forum for further useful therapeutic applications. Therefore, we claim that nano-engineered carbohydrated TiO2 phytohybrid is a promising solution for bacterial infections and bone cancer.
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Affiliation(s)
- Mohammad Shabib Akhtar
- Department of Clinical Pharmacy, College of Pharmacy, Najran University, Najran, 11001, Kingdom of Saudi Arabia
| | | | - Sharmila Saminathan
- Department of Physics, Vel Tech Rangarajan Dr Sagunthala R&D Institute of Science and Technology, Chennai, India
| | - Siva Ranjani Rajalingam
- PG & Research Department of Physics, Cauvery College for Women, Tiruchchirappalli, Tamil Nadu, India
| | - Nehal Mohsin
- Department of Clinical Pharmacy, College of Pharmacy, Najran University, Najran, 11001, Kingdom of Saudi Arabia
| | | | - Yasir Alhazmi
- Department of Clinical Pharmacy, College of Pharmacy, Najran University, Najran, 11001, Kingdom of Saudi Arabia
| | - Ismail A Walbi
- Department of Clinical Pharmacy, College of Pharmacy, Najran University, Najran, 11001, Kingdom of Saudi Arabia
| | - Basel A Abdel-Wahab
- Department of Pharmacology, College of Pharmacy, Najran University, Najran, 11001, Kingdom of Saudi Arabia
| | - Amol D Gholap
- Department of Pharmaceutics, St. John Institute of Pharmacy and Research, Palghar, 401404, Maharashtra, India
| | - Md Faiyazuddin
- School of Pharmacy, Al-Karim University, Katihar, Bihar, India
| | - Gowri Sundaram
- PG & Research Department of Physics, Cauvery College for Women, Tiruchchirappalli, Tamil Nadu, India.
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24
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Nair PS, Zadeh-Haghighi H, Simon C. Radical pair model for magnetic field effects on NMDA receptor activity. Sci Rep 2024; 14:3628. [PMID: 38351304 PMCID: PMC10864372 DOI: 10.1038/s41598-024-54343-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 02/12/2024] [Indexed: 02/16/2024] Open
Abstract
The N-methyl-D-aspartate receptor is a prominent player in brain development and functioning. Perturbations to its functioning through external stimuli like magnetic fields can potentially affect the brain in numerous ways. Various studies have shown that magnetic fields of varying strengths affect these receptors. We propose that the radical pair mechanism, a quantum mechanical process, could explain some of these field effects. Radicals of the form [Formula: see text], where R is a protein residue that can be Serine or Tyrosine, are considered for this study. The variation in the singlet fractional yield of the radical pairs, as a function of magnetic field strength, is calculated to understand how the magnetic field affects the products of the radical pair reactions. Based on the results, the radical pair mechanism is a likely candidate for explaining the magnetic field effects observed on the receptor activity. The model predicts changes in the behaviour of the system as magnetic field strength is varied and also predicts certain isotope effects. The results further suggest that similar effects on radical pairs could be a plausible explanation for various magnetic field effects within the brain.
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Affiliation(s)
- Parvathy S Nair
- Department of Physics, Indian Institute of Science Education and Research (IISER), Tirupati, Tirupati, Andhra Pradesh, 517507, India.
| | - Hadi Zadeh-Haghighi
- Department of Physics and Astronomy, University of Calgary, Calgary, AB, T2N 1N4, Canada.
- Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada.
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 1N4, Canada.
| | - Christoph Simon
- Department of Physics and Astronomy, University of Calgary, Calgary, AB, T2N 1N4, Canada.
- Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada.
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 1N4, Canada.
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25
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Heine N, Doll-Nikutta K, Stein F, Jakobi J, Ingendoh-Tsakmakidis A, Rehbock C, Winkel A, Barcikowski S, Stiesch M. Anti-biofilm properties of laser-synthesized, ultrapure silver-gold-alloy nanoparticles against Staphylococcus aureus. Sci Rep 2024; 14:3405. [PMID: 38336925 PMCID: PMC10858226 DOI: 10.1038/s41598-024-53782-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 02/05/2024] [Indexed: 02/12/2024] Open
Abstract
Staphylococcus aureus biofilm-associated infections are a common complication in modern medicine. Due to inherent resilience of biofilms to antibiotics and the rising number of antibiotic-resistant bacterial strains, new treatment options are required. For this purpose, ultrapure, spherical silver-gold-alloy nanoparticles with homogenous elemental distribution were synthesized by laser ablation in liquids and analyzed for their antibacterial activity on different stages of S. aureus biofilm formation as well as for different viability parameters. First, the effect of nanoparticles against planktonic bacteria was tested with metabolic activity measurements. Next, nanoparticles were incubated with differently matured S. aureus biofilms, which were then analyzed by metabolic activity measurements and three dimensional live/dead fluorescent staining to determine biofilm volume and membrane integrity. It could be shown that AgAu NPs exhibit antibacterial properties against planktonic bacteria but also against early-stage and even mature biofilms, with a complete diffusion through the biofilm matrix. Furthermore, AgAu NPs primarily targeted metabolic activity, to a smaller extend membrane integrity, but not the biofilm volume. Additional molecular analyses using qRT-PCR confirmed the influence on different metabolic pathways, like glycolysis, stress response and biofilm formation. As this shows clear similarities to the mechanism of pure silver ions, the results strengthen silver ions to be the major antibacterial agent of the synthesized nanoparticles. In summary, the results of this study provide initial evidence of promising anti-biofilm characteristics of silver-gold-alloy nanoparticles and support the importance of further translation-oriented analyses in the future.
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Affiliation(s)
- Nils Heine
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany.
| | - Katharina Doll-Nikutta
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Frederic Stein
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Jurij Jakobi
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Alexandra Ingendoh-Tsakmakidis
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Christoph Rehbock
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Andreas Winkel
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany
| | - Stephan Barcikowski
- Technical Chemistry I, University of Duisburg Essen, Universitaetsstr. 7, 45141, Essen, Germany
| | - Meike Stiesch
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
- Lower Saxony Centre of Biomedical Engineering, Implant Research and Development, Stadtfelddamm 34, 30625, Hannover, Germany.
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26
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Sung SH, Suh JM, Hwang YJ, Jang HW, Park JG, Jun SC. Data-centric artificial olfactory system based on the eigengraph. Nat Commun 2024; 15:1211. [PMID: 38332010 PMCID: PMC10853498 DOI: 10.1038/s41467-024-45430-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024] Open
Abstract
Recent studies of electronic nose system tend to waste significant amount of important data in odor identification. Until now, the sensitivity-oriented data composition has made it difficult to discover meaningful data to apply artificial intelligence in terms of in-depth analysis for odor attributes specifying the identities of gas molecules, ultimately resulting in hindering the advancement of the artificial olfactory technology. Here, we realize a data-centric approach to implement standardized artificial olfactory systems inspired by human olfactory mechanisms by formally defining and utilizing the concept of Eigengraph in electrochemisty. The implicit odor attributes of the eigengraphs were mathematically substantialized as the Fourier transform-based Mel-Frequency Cepstral Coefficient feature vectors. Their effectiveness and applicability in deep learning processes for gas classification have been clearly demonstrated through experiments on complex mixed gases and automobile exhaust gases. We suggest that our findings can be widely applied as source technologies to develop standardized artificial olfactory systems.
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Affiliation(s)
- Seung-Hyun Sung
- School of Mechanical Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Finance Division, Daejeon Metropolitan Office of Education, Daejeon, 35239, Republic of Korea
| | - Jun Min Suh
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Yun Ji Hwang
- School of Mechanical Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 16229, Republic of Korea.
| | - Jeon Gue Park
- Artificial Intelligence Laboratory, Tutorus Labs Inc., Seoul, 06595, Republic of Korea.
- Center for Educational Research, College of Education, Seoul National University, Seoul, 08826, Republic of Korea.
| | - Seong Chan Jun
- School of Mechanical Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
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27
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Sadat Z, Eivazzadeh-Keihan R, Daneshvari-Esfahlan V, Dalvand S, Kashtiaray A, Maleki A. Fabrication of a novel porous nanostructure based on NiCuFe 2O 4@MCM-48, embedded with graphene oxide/poly (p-phenylenediamine) to construct an efficient supercapacitor. Sci Rep 2024; 14:3137. [PMID: 38326474 PMCID: PMC10850150 DOI: 10.1038/s41598-024-53241-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/30/2024] [Indexed: 02/09/2024] Open
Abstract
In this study, a new nanocomposite was created by combining copper-doped nickel ferrite (NiCuFe2O4) nanoparticles with MCM-48 (Mobil Composition of Matter No. 48) on a graphene oxide (GO) substrate functionalized with poly(ρ-phenylenediamine) abbreviated as (PρPD). This nanocomposite was developed to investigate its potential for enhancing the function of a supercapacitor in energy storage. Following NiCuFe2O4@MCM-48 preparation, Hummer's technique GO was applied. In-situ polymerization of NiCuFe2O4@MCM-48/GO nanoparticles with ρ-phenylenediamine (ρPD) in the presence of ammonium persulfate (APS) produced PρPD, a conductive polymer. Structural characterization of the nanocomposite includes FTIR, XRD, VSM, TGA-DTG, EDX, and FE-SEM. Results from BET indicate a pore size increase of up to 5 nm. Fast ion penetration and higher storage in capacitor material are explained by this. Additionally, the nanocomposite's electrochemical performance was evaluated using GCD and CV tests. The NiCuFe2O4@MCM-48/GO/PρPD nanocomposite has a specific capacitance of 203.57 F g-1 (1 A g-1). Furthermore, cyclical stability is essential for energy storage applications. The nanocomposite retains 92.5% of its original capacitance after 3000 cycles, indicating outstanding electrochemical stability.
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Affiliation(s)
- Zahra Sadat
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Reza Eivazzadeh-Keihan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
| | - Vahid Daneshvari-Esfahlan
- Electrochemistry Research Laboratory, Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, 51666-16471, Iran
| | - Samad Dalvand
- Iranian Research & Development Center for Chemical Industries (IRDCI), Academic Center for Education, Culture and Research (ACECR), Karaj, Iran
| | - Amir Kashtiaray
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
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28
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Aboelenin AM, El-Mowafy M, Saleh NM, Shaaban MI, Barwa R. Ciprofloxacin- and levofloxacin-loaded nanoparticles efficiently suppressed fluoroquinolone resistance and biofilm formation in Acinetobacter baumannii. Sci Rep 2024; 14:3125. [PMID: 38326515 PMCID: PMC10850473 DOI: 10.1038/s41598-024-53441-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 01/31/2024] [Indexed: 02/09/2024] Open
Abstract
The spread of fluoroquinolone (FQ) resistance in Acinetobacter baumannii represents a critical health threat. This study aims to overcome FQ resistance in A. baumannii via the formulation of polymeric nanoFQs. Herein, 80 A. baumannii isolates were obtained from diverse clinical sources. All A. baumannii isolates showed high resistance to most of the investigated antimicrobials, including ciprofloxacin (CIP) and levofloxacin (LEV) (97.5%). FQ resistance-determining regions of the gyrA and parC genes were the most predominant resistant mechanism, harbored by 69 (86.3%) and 75 (93.8%) of the isolates, respectively. Additionally, plasmid-mediated quinolone resistance genes aac(6')-Ib and qnrS were detected in 61 (76.3%) and 2 (2.5%) of the 80 isolates, respectively. The CIP- and LEV-loaded poly ε-caprolactone (PCL) nanoparticles, FCIP and FLEV, respectively, showed a 1.5-6- and 6-12-fold decrease in the MIC, respectively, against the tested isolates. Interestingly, the time kill assay demonstrated that MICs of FCIP and FLEV completely killed A. baumannii isolates after 5-6 h of treatment. Furthermore, FCIP and FLEV were found to be efficient in overcoming the FQ resistance mediated by the efflux pumps in A. baumannii isolates as revealed by decreasing the MIC four-fold lower than that of free CIP and LEV, respectively. Moreover, FCIP and FLEV at 1/2 and 1/4 MIC significantly decreased biofilm formation by 47-93% and 69-91%, respectively. These findings suggest that polymeric nanoparticles can restore the effectiveness of FQs and represent a paradigm shift in the fight against A. baumannii isolates.
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Affiliation(s)
- Alaa M Aboelenin
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Mohammed El-Mowafy
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Noha M Saleh
- Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt
| | - Mona I Shaaban
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt.
| | - Rasha Barwa
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, PO Box 35516, Mansoura, Egypt.
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Espinosa-Garavito AC, Quiroz EN, Galán-Freyle NJ, Aroca-Martinez G, Hernández-Rivera SP, Villa-Medina J, Méndez-López M, Gomez-Escorcia L, Acosta-Hoyos A, Pacheco-Lugo L, Espitia-Almeida F, Pacheco-Londoño LC. Surface-enhanced Raman Spectroscopy in urinalysis of hypertension patients with kidney disease. Sci Rep 2024; 14:3035. [PMID: 38321263 PMCID: PMC10847430 DOI: 10.1038/s41598-024-53679-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 02/03/2024] [Indexed: 02/08/2024] Open
Abstract
Arterial hypertension (AH) is a multifactorial and asymptomatic disease that affects vital organs such as the kidneys and heart. Considering its prevalence and the associated severe health repercussions, hypertension has become a disease of great relevance for public health across the globe. Conventionally, the classification of an individual as hypertensive or non-hypertensive is conducted through ambulatory blood pressure monitoring over a 24-h period. Although this method provides a reliable diagnosis, it has notable limitations, such as additional costs, intolerance experienced by some patients, and interferences derived from physical activities. Moreover, some patients with significant renal impairment may not present proteinuria. Accordingly, alternative methodologies are applied for the classification of individuals as hypertensive or non-hypertensive, such as the detection of metabolites in urine samples through liquid chromatography or mass spectrometry. However, the high cost of these techniques limits their applicability for clinical use. Consequently, an alternative methodology was developed for the detection of molecular patterns in urine collected from hypertension patients. This study generated a direct discrimination model for hypertensive and non-hypertensive individuals through the amplification of Raman signals in urine samples based on gold nanoparticles and supported by chemometric techniques such as partial least squares-discriminant analysis (PLS-DA). Specifically, 162 patient urine samples were used to create a PLS-DA model. These samples included 87 urine samples from patients diagnosed with hypertension and 75 samples from non-hypertensive volunteers. In the AH group, 35 patients were diagnosed with kidney damage and were further classified into a subgroup termed (RAH). The PLS-DA model with 4 latent variables (LV) was used to classify the hypertensive patients with external validation prediction (P) sensitivity of 86.4%, P specificity of 77.8%, and P accuracy of 82.5%. This study demonstrates the ability of surface-enhanced Raman spectroscopy to differentiate between hypertensive and non-hypertensive patients through urine samples, representing a significant advance in the detection and management of AH. Additionally, the same model was then used to discriminate only patients diagnosed with renal damage and controls with a P sensitivity of 100%, P specificity of 77.8%, and P accuracy of 82.5%.
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Affiliation(s)
- Alberto C Espinosa-Garavito
- Centro de Investigaciones en Ciencias de la Vida, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, 080002, Barranquilla, Atlántico, Colombia
| | - Elkin Navarro Quiroz
- Centro de Investigaciones en Ciencias de la Vida, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, 080002, Barranquilla, Atlántico, Colombia
| | - Nataly J Galán-Freyle
- Centro de Investigaciones en Ciencias de la Vida, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, 080002, Barranquilla, Atlántico, Colombia
| | | | - Samuel P Hernández-Rivera
- Center for Chemical Sensors, DHS SENTRY COE, University of Puerto Rico-Mayaguez, Mayaguez, PR, 00681, USA
| | - Joe Villa-Medina
- Center of Pharmaceutical Research, Procaps Laboratories, 080002, Barranquilla, Colombia
| | - Maximiliano Méndez-López
- Grupo de Química y Biología, Departamento de Química y Biología, Universidad del Norte, Km 5 Vía Puerto Colombia, 080001, Barranquilla, Colombia
| | | | - Antonio Acosta-Hoyos
- Centro de Investigaciones en Ciencias de la Vida, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, 080002, Barranquilla, Atlántico, Colombia
| | - Lisandro Pacheco-Lugo
- Centro de Investigaciones en Ciencias de la Vida, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, 080002, Barranquilla, Atlántico, Colombia
| | - Fabián Espitia-Almeida
- Centro de Investigaciones en Ciencias de la Vida, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, 080002, Barranquilla, Atlántico, Colombia
| | - Leonardo C Pacheco-Londoño
- Centro de Investigaciones en Ciencias de la Vida, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, 080002, Barranquilla, Atlántico, Colombia.
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Elsokary A, Soliman M, Abulfotuh F, Ebrahim S, Sadat-Shafai T, Karim M. Fabrication of composite transparent conductive electrodes based on silver nanowires. Sci Rep 2024; 14:3045. [PMID: 38321055 PMCID: PMC10847120 DOI: 10.1038/s41598-024-53286-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/30/2024] [Indexed: 02/08/2024] Open
Abstract
Composite transparent conductive electrodes (C-TCEs) have recently been produced using low-cost techniques to keep up with the boom in the fabrication and development of optoelectronic devices. In this article, silver nanowires (AgNWs) were successfully synthesized by a simple hydrothermal method using different molecular weights MWs of poly (N-vinylpyrrolidone) (PVP). Graphene oxide (GO) was prepared using the modified Hummers' method and a reduction step was held on GO films to produce reduced GO (rGO). C-TCEs were fabricated by over-coating the AgNWs electrodes with rGO, or poly(3,4-ethylenedioxythiophene) polystyrene sulfonate to improve the roughness, surface energy, and sheet resistance. The influence of using lower and higher MWs of PVP on the yield, shape, and size of AgNWs was investigated. The results showed that using lower MW of PVP had a great effect on the yield, morphology, and aspect ratio of AgNWs with diameter of 46 nm and average length 12 µm. The optical, morphological, topographical, and electrical properties of TCEs were studied. AgNWs/rGO composite electrode provided the lowest surface roughness and surface energy of 250 nm and 47.95 mN/m, respectively, with a relatively high transparency of 78.2% at 550 nm light wavelength, and a low sheet resistance of 27 Ω/□.
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Affiliation(s)
- Amal Elsokary
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt.
| | - Moataz Soliman
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt
| | - Fuad Abulfotuh
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt
| | - Shaker Ebrahim
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt
| | - Torfeh Sadat-Shafai
- Department of Engineering, School of Digital, Technologies and Arts, Staffordshire University, Manchester, UK
| | - Marwa Karim
- Physics Department, Faculty of Science, Alexandria University, Moharram Bek, P.O. Box 21511, Alexandria, Egypt
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Singh V, Mandal T, Mishra SR, Singh A, Khare P. Development of amine-functionalized fluorescent silica nanoparticles from coal fly ash as a sustainable source for nanofertilizer. Sci Rep 2024; 14:3069. [PMID: 38321035 PMCID: PMC10847091 DOI: 10.1038/s41598-024-53122-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/28/2024] [Indexed: 02/08/2024] Open
Abstract
Scaling up the synthesis of fluorescent silica nanoparticles to meet the current demand in diverse applications involves technological limitations. The present study relates to the hydrothermal synthesis of water-soluble, crystalline, blue-emitting amine-functionalized silica nanoparticles from coal fly ash sustainably and economically. This study used tertiary amine (trimethylamine) to prepare amine-functionalized fluorescent silica nanoparticles, enhancing fluorescence quantum yield and nitrogen content for nanofertilizer application. The TEM and FESEM studies show that the silica nanoparticles have a spherical morphology with an average diameter of 4.0 nm. The x-ray photoelectron and Fourier transform infrared spectroscopy studies reveal the presence of the amine group at the surface of silica nanoparticles. The silica nanoparticles exhibit blue fluorescence with an emission maximum of 454 nm at 370 nm excitation and show excitation-dependent emission properties in the aqueous medium. With the perfect spectral overlap between silica nanoparticle emission (donor) and chlorophyll absorption (acceptor), fluorescent silica nanoparticles enhance plant photosynthesis rate by resonance energy transfer. This process accelerates the photosynthesis rate to improve the individual plant's quality and growth. These findings suggested that the fly ash-derived functionalized silica nanoparticles could be employed as nanofertilizers and novel delivery agents.
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Affiliation(s)
- Vikram Singh
- Environment Emission and CRM Division, CSIR-Central Institute of Mining and Fuel Research Dhanbad, Dhanbad, Jharkhand, 828108, India.
- Coal to Hydrogen Energy for Sustainable Solutions, CSIR-Central Institute of Mining and Fuel Research Dhanbad, Dhanbad, Jharkhand, 828108, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| | - Tuhin Mandal
- Environment Emission and CRM Division, CSIR-Central Institute of Mining and Fuel Research Dhanbad, Dhanbad, Jharkhand, 828108, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shiv Rag Mishra
- Environment Emission and CRM Division, CSIR-Central Institute of Mining and Fuel Research Dhanbad, Dhanbad, Jharkhand, 828108, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Anupama Singh
- Agronomy and Soil Science Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Puja Khare
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Agronomy and Soil Science Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
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Abd El-Hamid HK, Farag MM, Abdelraof M, Elwan RL. Regulation of the antibiotic elution profile from tricalcium phosphate bone cement by addition of bioactive glass. Sci Rep 2024; 14:2804. [PMID: 38307930 PMCID: PMC10837204 DOI: 10.1038/s41598-024-53319-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/30/2024] [Indexed: 02/04/2024] Open
Abstract
This work aimed at tailoring of different properties of antibacterial drug delivery Ca-phosphate cements by incorporation of bioactive glass (BG). The cements were prepared from beta-tricalcium phosphate cement (β-TCP) and BG based on 50 SiO2-20 CaO-15 Na2O-7 B2O3-4 P2O5-4 Al2O3 wt% with different percentages of BG [5, 10, 15, and 20% (w/w)]. The composite cements were characterized by XRD, FTIR, and TEM. Moreover, in vitro bioactivity and biodegradation were evaluated in the simulated body fluid (SBF) at 37 °C. In addition, physical properties and mechanical strength were determined. Also, the effect of glass addition on the drug release profile was examined using gentamicin. Finally, the antimicrobial activity was studied against Staphylococcus aureus, Pseudomonas aeruginosa, and Klebsiella pneumonia bacteria, one unicellular fungal strain (Candida albicans), and one multicellular fungal strain (Mucor racemosus). The results showed that after soaking in SBF, the compression strength values ranged from 14 to 36 MPa, the bulk densities and porosities were within 1.35 to 1.49 g/cm3 and 51.3 to 44.71%, respectively. Furthermore, gentamicin was released in a sustained manner, and BG decreased the released drug amount from ~ 80% (in pure β-TCP) to 47-53% in the composite cements. A drug release profile that is sustained by all samples was achieved. The antimicrobial test showed good activity of gentamicin-conjugated cements against bacteria and fungi used in this study. Additionally, cytotoxicity results proved that all samples were safe on MG-63 cells up to 50 µg/mL with no more than 7-12% dead cells. From the view of the physico-mechanical properties, bioactivity, biodegradation, and drug release rate, 20BG/β-TCP sample was nominated for practical bone grafting material, where it showed appropriate setting time and a relatively high mechanical strength suitable for cancellous bone.
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Affiliation(s)
- H K Abd El-Hamid
- Refractories, Ceramics and Building Materials Department, National Research Centre (NRC), El-Buhouth St., Dokki, 12622, Cairo, Egypt.
| | - Mohammad M Farag
- Glass Research Department, National Research Centre (NRC), El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Mohamed Abdelraof
- Microbial Chemistry Department, Biotechnology Research Institute, National Research Centre (NRC), El-Buhouth St., Dokki, 12622, Cairo, Egypt
| | - R L Elwan
- Glass Research Department, National Research Centre (NRC), El-Buhouth St., Dokki, 12622, Cairo, Egypt.
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Khaled AA, Shabaan AM, Hammad SM, Hafez EE, Saleh AA. Exploring the impact of nano-Se and nano-clay feed supplements on interleukin genes, immunity and growth rate in European Sea Bass (Dicentrarchus labrax). Sci Rep 2024; 14:2631. [PMID: 38302608 PMCID: PMC10834503 DOI: 10.1038/s41598-024-53274-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 01/30/2024] [Indexed: 02/03/2024] Open
Abstract
This study aimed to investigate the effects of adding Nano-Selenium (NSe) and Nano-clay (NC) as feed supplements on European Sea Bass (Dicentrarchus labrax). Two separate experiments were conducted, one with NC and the other with NSe. Each experiment consisted of four sub-groups with varying concentrations of NC or NSe. The expression levels of five immune-related genes (TNF-α, TNF-β, IL-2, IL-6 and IL-12) were measured using Real-time Quantitative PCR (Rt-PCR) Assay. The results showed an increase in the expression of interleukins (IL-2, IL-6 and IL-12) and pro-inflammatory cytokines (TNF-α and TNF-β) after exposure to NC and NSe. TNF-α gene expression was significantly higher with both 1 mg and 10 mg concentrations of NC and NSe. TNF-β gene expression was highest with the 5 mg concentration of NC. The concentrations of 1 mg and 10 mg for NC, and 1 mg, 5 mg, and 10 mg for NSe, led to the highest (p < 0.05) levels of IL-2 expression compared to the control. Similar trends were observed for IL-6 and IL-12 gene expression. Understanding the impact of these concentrations on gene expression, growth rate, biochemical indices, and antioxidant status can provide valuable insights into the potential applications of NC and NSe supplements on European Sea Bass.
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Affiliation(s)
- Asmaa A Khaled
- Animal and Fish Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria City, 21531, Egypt
| | - Amany M Shabaan
- Chemistry Department, Biochemistry Division, Faculty of Science, El-Fayoum University, El-Fayoum, Egypt
| | - Saad M Hammad
- Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, New Borg El Arab, Alexandria, 21934, Egypt
| | - Elsayed E Hafez
- Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, New Borg El Arab, Alexandria, 21934, Egypt
| | - Ahmed A Saleh
- Animal and Fish Production Department, Faculty of Agriculture (Alshatby), Alexandria University, Alexandria City, 11865, Egypt.
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Solanki R, Rajput PK, Jodha B, Yadav UCS, Patel S. Enhancing apoptosis-mediated anticancer activity of evodiamine through protein-based nanoparticles in breast cancer cells. Sci Rep 2024; 14:2595. [PMID: 38297059 PMCID: PMC10830498 DOI: 10.1038/s41598-024-51970-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 01/11/2024] [Indexed: 02/02/2024] Open
Abstract
In the cutting-edge era of developing precision therapeutics, nanoparticles have emerged as a potent drug delivery system. Altering the size of poorly water-soluble drugs to nanoscale could confer change in their physical properties, including enhanced water solubility and bioavailability. Evodiamine (EVO), a natural indolequinone alkaloid extract from Evodia rutaecarpa, has shown several important pharmacological applications, anti-cancer being one of them. Protein-based nano-drug delivery systems have gained the interest of researchers due to their better biocompatibility, biodegradability, non-immunogenicity and non-toxicity. In the present study, EVO encapsulated BSA nanoparticles (ENPs) were synthesized and characterized, which were nanoscale-sized (~ 150 nm), monodispersed, spherical shaped, and showed high entrapment efficiency (~ 86%) and controlled drug release. The in-vitro anti-cancer activity of ENPs on human breast cancer cells was dose- and time-dependent. The apoptotic molecular mechanism investigated using FACS, qRT-PCR, and western blotting analysis, revealed increased expression of p53 and Bax and decreased expression of Bcl-2. Biological studies demonstrated comparatively more efficient and targeted delivery of ENPs than pure EVO. The comprehensive physiochemical characterization and in-vitro validation collectively pinpoint ENPs as a promising avenue for harnessing the therapeutic potential of the natural anti-cancer compound EVO. The findings indicate improved cytotoxicity, positioning ENPs as a propitious strategy for advancing breast cancer treatment.
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Affiliation(s)
- Raghu Solanki
- School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| | - Pradeep Kumar Rajput
- School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| | - Bhavana Jodha
- School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| | - Umesh C S Yadav
- Special Centre for Medicine and Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Sunita Patel
- School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030, India.
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Vaziri Y, Asgari G, Ghorbani-Shahna F, Madrakian T, Shokoohi R, Seid-Mohammadi A. Degradation of 2,4-dinitrotoluene in aqueous solution by dielectric barrier discharge plasma combined with Fe-RGO-BiVO 4 nanocomposite. Sci Rep 2024; 14:2480. [PMID: 38291089 PMCID: PMC10827745 DOI: 10.1038/s41598-024-52286-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/16/2024] [Indexed: 02/01/2024] Open
Abstract
2,4-Dinitrotoluene (2,4-DNT) as a priority and hazardous pollutant, is widely used in industrial and military activities. In this study the synergistic effect of Fe-RGO-BiVO4 nanocomposite in a non-thermal dielectric barrier discharge plasma reactor (NTP-DBD) for degrading 2,4-DNT was evaluated. Preparation of the Fe-RGO-BiVO4 nanocomposite was done by a stepwise chemical method depositing Fe and reduced graphene oxide (RGO) on BiVO4. Field emission scanning electron microscopy (FESEM), X-ray diffraction analysis (XRD), UV-vis diffuse reflectance spectra (DRS), and energy-dispersive X-ray spectroscopy mapping (EDS-mapping) validated the satisfactory synthesis of Fe-RGO-BiVO4. To find the optimal conditions and to determine the interaction of model parameters, a central composite design (RSM-CCD) had been employed. 2,4 DNT can be completely degraded at: initial 2,4-DNT concentration of 40 mg L-1, Fe-RGO-BiVO4 dosage of 0.75 g L-1, applied voltage of 21kV, reaction time of 30 min and pH equal to 7, while the single plasma process reached a degradation efficiency of 67%. The removal efficiency of chemical oxygen demand (COD) and total organic carbon (TOC) were 90.62% and 88.02% at 30 min contact time, respectively. Results also indicated that average oxidation state (AOS) and carbon oxidation state (COS) were enhanced in the catalytic NTP-DBD process, which demonstrate the effectiveness of proposed process for facilitating biodegradability of 2,4-DNT.
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Affiliation(s)
- Yaser Vaziri
- Department of Environmental Health Engineering, Hamadan University of Medical Science, Hamadan, Iran
| | - Ghorban Asgari
- Social Determinants of Health Research Center (SDHRC), Faculty of Public Health, Department of Environmental Health Engineering, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Farshid Ghorbani-Shahna
- Center of Excellence for Occupational Health, Occupational Health and Safety Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | | | - Reza Shokoohi
- Department of Environmental Health Engineering, Hamadan University of Medical Science, Hamadan, Iran
| | - Abdolmotaleb Seid-Mohammadi
- Social Determinants of Health Research Center (SDHRC), Faculty of Public Health, Department of Environmental Health Engineering, Hamadan University of Medical Sciences, Hamadan, Iran.
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36
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Schober GB, Story S, Arya DP. A careful look at lipid nanoparticle characterization: analysis of benchmark formulations for encapsulation of RNA cargo size gradient. Sci Rep 2024; 14:2403. [PMID: 38287070 PMCID: PMC10824725 DOI: 10.1038/s41598-024-52685-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/19/2024] [Indexed: 01/31/2024] Open
Abstract
With the recent success of lipid nanoparticle (LNP) based SARS-CoV-2 mRNA vaccines, the potential for RNA therapeutics has gained widespread attention. LNPs are promising non-viral delivery vectors to protect and deliver delicate RNA therapeutics, which are ineffective and susceptible to degradation alone. While food and drug administration (FDA) approved formulations have shown significant promise, benchmark lipid formulations still require optimization and improvement. In addition, the translatability of these formulations for several different RNA cargo sizes has not been compared under the same conditions. Herein we analyze "gold standard" lipid formulations for encapsulation efficiency of various non-specific RNA cargo lengths representing antisense oligonucleotides (ASO), small interfering RNA (siRNA), RNA aptamers, and messenger RNA (mRNA), with lengths of 10 bases, 21 base pairs, 96 bases, 996 bases, and 1929 bases, respectively. We evaluate encapsulation efficiency as the percentage of input RNA encapsulated in the final LNP product (EEinput%), which shows discrepancy with the traditional calculation of encapsulation efficiency (EE%). EEinput% is shown to be < 50% for all formulations tested, when EE% is consistently > 85%. We also compared formulations for LNP size (Z-average) and polydispersity index (PDI). LNP size does not appear to be strongly influenced by cargo size, which is a counterintuitive finding. Thoughtful characterization of LNPs, in parallel with consideration of in vitro or in vivo behavior, will guide design and optimization for better understanding and improvement of future RNA therapeutics.
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Affiliation(s)
| | | | - Dev P Arya
- NUBAD LLC, Greer, 29650, USA.
- Department of Chemistry, Clemson University, Clemson, 29631, USA.
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Dhineshkumar E, Arumugam N, Manikandan E, Maaza M, Mandal A. Fabrication of high performance based deep-blue OLED with benzodioxin-6-amine-styryl-triphenylamine and carbazole hosts as electroluminescent materials. Sci Rep 2024; 14:2432. [PMID: 38287065 PMCID: PMC10825205 DOI: 10.1038/s41598-023-50867-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 12/27/2023] [Indexed: 01/31/2024] Open
Abstract
The present study reports synthesis of phenathroimidazole derivatives structures following donor-acceptor relation for high performance deep-blue light emitting diodes. Herein, methyl substituted benzodioxin-6-amine phenanthroimidazoles Cz-SBDPI and TPA-SBDPI derivatives that provide the blue light were designed and synthesized. These Cz-SBDPI and TPA-SBDPI show higher glass transition (Tg) temperatures of 199 and 194 °C and demonstrate enhanced thermal properties. Apart from enhanced thermal stability these compounds also exhibit superior photophysical, electrochemical and electroluminescent properties. The non-doped carbazole based device display improved electroluminescent performances than those of TPA-based devices. The strong orbital-coupling due to decreased energy barrier between Cz-SBDPI transitions result in deep blue emission with CIE-0.15, 0.06. For non-doped Cz-SBDPI device; high L (brightness):12,984 cd/m2; ηc (current efficiency): 5.9 cd/A; ηp (power efficiency): 5.7 lm/W and ηex (external quantum efficiency): 6.2% was observed. The results show that the D-A emitters can serve as simple but also as an effective approach to devise cheap electroluminescent materials that has high efficiency and can serve as OLED devices.
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Affiliation(s)
- E Dhineshkumar
- Manushyaa Blossom Pvt. Ltd., Chennai, Tamil Nadu, 600102, India
| | - N Arumugam
- Department of Biotechnology, School of Life Sciences, Pondicherry University (A Central University), Puducherry, 605014, India
| | - E Manikandan
- Centre for Nanoscience and Technology, MSGET, Pondicherry University (A Central University), Puducherry, 605014, India.
- College of Graduate Studies, UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, Muckleneuk Ridge, PO Box 392, Pretoria, South Africa.
- Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West, PO Box 722, Western Cape, 7129, South Africa.
| | - M Maaza
- College of Graduate Studies, UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, Muckleneuk Ridge, PO Box 392, Pretoria, South Africa.
- Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West, PO Box 722, Western Cape, 7129, South Africa.
| | - Abhishek Mandal
- Department of Biotechnology, School of Life Sciences, Pondicherry University (A Central University), Puducherry, 605014, India.
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Mufundirwa A, Sakurai Y, Arao M, Matsumoto M, Imai H, Iwamoto H. Contrast variation method applied to structural evaluation of catalysts by X-ray small-angle scattering. Sci Rep 2024; 14:2263. [PMID: 38278843 PMCID: PMC10817912 DOI: 10.1038/s41598-024-52671-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/22/2024] [Indexed: 01/28/2024] Open
Abstract
In the process of developing carbon-supported metal catalysts, determining the catalyst particle-size distribution is an essential step, because this parameter is directly related to the catalytic activities. The particle-size distribution is most effectively determined by small-angle X-ray scattering (SAXS). When metal catalysts are supported by high-performance mesoporous carbon materials, however, their mesopores may lead to erroneous particle-size estimation if the sizes of the catalysts and mesopores are comparable. Here we propose a novel approach to particle-size determination by introducing contrast variation-SAXS (CV-SAXS). In CV-SAXS, a multi-component sample is immersed in an inert solvent with a density equal to that of one of the components, thereby rendering that particular component invisible to X-rays. We used a mixture of tetrabromoethane and dimethyl sulfoxide as a contrast-matching solvent for carbon. As a test sample, we prepared a mixture of a small amount of platinum (Pt) catalyst and a bulk of mesoporous carbon, and subjected it to SAXS measurement in the absence and presence of the solvent. In the absence of the solvent, the estimated Pt particle size was affected by the mesopores, but in the presence of the solvent, the Pt particle size was correctly estimated in spite of the low Pt content. The results demonstrate that the CV-SAXS technique is useful for correctly determining the particle-size distribution for low-Pt-content catalysts, for which demands are increasing to reduce the use of expensive Pt.
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Affiliation(s)
- Albert Mufundirwa
- Research Project Division, Japan Synchrotron Radiation Research Institute, SPring-8, Sayo-Cho, Sayo-Gun, Hyogo, 679-5198, Japan
| | - Yoshiharu Sakurai
- Research Project Division, Japan Synchrotron Radiation Research Institute, SPring-8, Sayo-Cho, Sayo-Gun, Hyogo, 679-5198, Japan
| | - Masazumi Arao
- Fuel Cell Cutting-Edge Research Center Technology Research Association, 3147, Shimomukouyama-Cho, Kofu, Yamanashi, 400-1507, Japan
| | - Masashi Matsumoto
- Fuel Cell Cutting-Edge Research Center Technology Research Association, 3147, Shimomukouyama-Cho, Kofu, Yamanashi, 400-1507, Japan
| | - Hideto Imai
- Fuel Cell Cutting-Edge Research Center Technology Research Association, 3147, Shimomukouyama-Cho, Kofu, Yamanashi, 400-1507, Japan
| | - Hiroyuki Iwamoto
- Research Project Division, Japan Synchrotron Radiation Research Institute, SPring-8, Sayo-Cho, Sayo-Gun, Hyogo, 679-5198, Japan.
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Ganesan S, Kokulnathan T, Sumathi S, Palaniappan A. Efficient photocatalytic degradation of textile dye pollutants using thermally exfoliated graphitic carbon nitride (TE-g-C 3N 4). Sci Rep 2024; 14:2284. [PMID: 38280908 PMCID: PMC10821873 DOI: 10.1038/s41598-024-52688-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/22/2024] [Indexed: 01/29/2024] Open
Abstract
Graphitic carbon nitride (g-C3N4), an organic photocatalyst was reported to have beneficial properties to be used in wastewater treatment applications. However, g-C3N4, in its bulk form was found to have poor photocatalytic degradation efficiency due to its inherent limitations such as poor specific surface area and fast electron-hole pair recombination rate. In this study, we have tuned the physiochemical properties of bulk g-C3N4 by direct thermal exfoliation (TE-g-C3N4) and examined their photocatalytic degradation efficiency against abundant textile dyes such as methylene blue (MB), methyl orange (MO), and rhodamine B (RhB). The degradation efficiencies for MB, MO, and RhB dyes are 92 ± 0.18%, 93 ± 0.31%, and 95 ± 0.4% respectively in 60 min of UV light irradiation. The degradation efficiency increased with an increase in the exfoliation temperature. The prepared catalysts were characterized using FTIR, XRD, FE-SEM, EDAX, BET, and UV-DRS. In BET analysis, TE-g-C3N4 samples showed improved surface area (48.20 m2/g) when compared to the bulk g-C3N4 (5.03 m2/g). Further, the TE-g-C3N4 had 2.98 times higher adsorption efficiency than the bulk ones. The free radicals scavenging studies revealed that the superoxide radicals played an important role in the photodegradation for dyes, when compared to the hydroxyl radical (.OH) and the photo-induced holes (h+), Photoluminescence (PL) emission and electrochemical impedance spectroscopy (EIS) spectra of TE-g-C3N4 indicated a lowered electron-hole pairs' recombination rate and an increased photo-induced charge transfer respectively. Further, the TE-g-C3N4 were found to have excellent stability for up to 5 cycles with only a minor decrease in the activity from 92% to 86.2%. These findings proved that TE-g-C3N4 was an excellent photocatalyst for the removal and degradation of textile dyes from wastewater.
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Affiliation(s)
- Selvaganapathy Ganesan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
- Human Organ Manufacturing Engineering (HOME), Lab, Centre for Biomaterials, Cellular and Molecular Theranostics (CBCMT), Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Thangavelu Kokulnathan
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Shanmugam Sumathi
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Arunkumar Palaniappan
- Human Organ Manufacturing Engineering (HOME), Lab, Centre for Biomaterials, Cellular and Molecular Theranostics (CBCMT), Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
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40
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Ajtai T, Utry N, Pintér M, Rahman A, Kurilla B, Sárossy G, Deák L, Baladincz J, Raffai P, Szabó G, Bozóki Z. The investigation of diesel soot emission using instrument combination of multi-wavelength photoacoustic spectroscopy and scanning mobility particle sizer. Sci Rep 2024; 14:2254. [PMID: 38278878 PMCID: PMC10817988 DOI: 10.1038/s41598-024-52832-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 01/24/2024] [Indexed: 01/28/2024] Open
Abstract
The parallel measurements of wavelength dependent optical absorption, particle number size distribution have made by a multi wavelength photoacoustic spectrometer (4λ-PAS) and scanning mobility particle sizer (SMPS) respectively at different modes of a diesel engine using two different types of fuel. The thermal evolution of the emission was also investigated using posterior temperature treatment of emission. The bimodal size distribution of emitted particles at a set reference temperature has been observed regardless of the applied fuel at idle. However, the emitted particulate assembly had lognormal size distribution falls into the accumulation mode at all other defined engine modes and both fuel types. The total number- and volume concentration (TNC and TVC) showed retrograde tendency with the increasing torque and rpm independently of the applied fuel types. The TNC values decreased up to 50% for both fuels with engine operation changes from idle engine mode(em#1) to low engine mode(em#2). With further increase in torque and rpm of engine, the change in TNC is negligible. On the other hand, the TVC remains more or less the same for idle to low engine mode transition and increased more than 60% for high mode (em#3) transition. The Optical Absorption Coefficient (OAC) values measured at the operational wavelengths of the 4λ-PAS instrument decreased at all wavelengths with increasing rpm and torque. The wavelength dependency quantified by Aerosol Ängström Exponent (AAE) was applied here for qualitative analysis of the carbonaceous emission and showed decreased values towards the higher engine speed and torque output of the engine. The proposed technique can be used as real-time, precise and accurate measurement of light absorption by DPM aerosols, which opens up novel possibilities for the volatility and thermal evolution investigation of diesel emissions.
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Affiliation(s)
- Tibor Ajtai
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary
- HUN-REN-SZTE Research Group for Photoacoustic Monitoring of Environmental Processes, Dóm ter 9, Szeged, 6720, Hungary
| | - Noémi Utry
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary
| | - Máté Pintér
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary
| | - Abdul Rahman
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary.
| | - Boldizsár Kurilla
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary
| | - Gábor Sárossy
- MOL Ltd. Duna Refinery, Százhalombatta, 2440, Hungary
| | - László Deák
- MOL Ltd. Duna Refinery, Százhalombatta, 2440, Hungary
| | | | - Péter Raffai
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary
| | - Gábor Szabó
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary
| | - Zoltán Bozóki
- Department of Optics and Quantum Electronics, University of Szeged, 9. Dóm Square, Szeged, 6720, Hungary
- HUN-REN-SZTE Research Group for Photoacoustic Monitoring of Environmental Processes, Dóm ter 9, Szeged, 6720, Hungary
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Perumal P, Sathakkathulla NA, Kumaran K, Ravikumar R, Selvaraj JJ, Nagendran V, Gurusamy M, Shaik N, Gnanavadivel Prabhakaran S, Suruli Palanichamy V, Ganesan V, Thiraviam PP, Gunalan S, Rathinasamy S. Green synthesis of zinc oxide nanoparticles using aqueous extract of shilajit and their anticancer activity against HeLa cells. Sci Rep 2024; 14:2204. [PMID: 38273022 PMCID: PMC10810832 DOI: 10.1038/s41598-024-52217-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 01/16/2024] [Indexed: 01/27/2024] Open
Abstract
In the present study, ZnO nanoparticles have been synthesized using an aqueous extract of shilajit. The nanoparticles were characterized using different techniques such as UV (ultraviolet-visible spectrophotometer), FTIR (Fourier transform infrared), XRD (X-ray diffraction), particle size analysis, SEM (scanning electron microscope) and EDAX (Energy-dispersive X-ray) analysis. The UV absorption peak at 422.40 nm was observed for ZnO nanoparticles. SEM analysis showed the shape of nanoparticles to be spherical, FTIR spectrum confirmed the presence of zinc atoms, particle size analysis showed the nanoparticle size, EDAX confirmed the purity of ZnO nanoparticles whereas XRD pattern similar to that of JCPDS card for ZnO confirmed the presence of pure ZnO nanoparticles. The in vitro anticancer activity of ZnO nanoparticles against the HeLa cell line showed the IC50 value of 38.60 μg/mL compared to reference standard cisplatin. This finding confirms that ZnO nanoparticles from shilajit extract have potent cytotoxic effect on human cervical cancer cell lines.
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Affiliation(s)
- Parthasarathi Perumal
- Department of Molecular and Cell Biology Lab, Greensmed Labs, Thoraipakkam, Chennai, 600097, India
| | | | - Kalaivani Kumaran
- Department of Pharmaceutical Chemistry, EGS Pillay College of Pharmacy, Nagapattinam, 611002, India
| | - Ramaladevi Ravikumar
- Department of Pharmaceutical Chemistry, EGS Pillay College of Pharmacy, Nagapattinam, 611002, India
| | - Justin Jayaraj Selvaraj
- Department of Pharmaceutical Chemistry, EGS Pillay College of Pharmacy, Nagapattinam, 611002, India
| | - Vijayakumar Nagendran
- Department of Pharmaceutical Chemistry, EGS Pillay College of Pharmacy, Nagapattinam, 611002, India
| | - Mariappan Gurusamy
- Department of Pharmaceutics, St. Mary's College of Pharmacy, Secunderabad, Telangana, 500025, India
| | - Naazneen Shaik
- Department of Pharmaceutics, St. Mary's College of Pharmacy, Secunderabad, Telangana, 500025, India
| | | | - Vinothkumar Suruli Palanichamy
- Department of Pharmaceutical Chemistry, Pannai College of Pharmacy (Affiliated to the Tamil Nadu Dr. M.G.R. Medical University, Chennai), Dindigul, 624005, India
| | - Vellaichamy Ganesan
- Department of Pharmaceutical Chemistry, Pannai College of Pharmacy (Affiliated to the Tamil Nadu Dr. M.G.R. Medical University, Chennai), Dindigul, 624005, India
| | | | - Seshan Gunalan
- Centre of Advanced Study in Crystallography and Biophysics, Guindy Campus, University of Madras, Chennai, 600025, India
| | - Suresh Rathinasamy
- Department of Molecular and Cell Biology Lab, Greensmed Labs, Thoraipakkam, Chennai, 600097, India.
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42
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Fierro F, Iuliano M, Cirillo C, Florio C, Maffei G, Loi A, Batakliev T, Adami R, Sarno M. Multifunctional leather finishing vs. applications, through the addition of well-dispersed flower-like nanoparticles. Sci Rep 2024; 14:2163. [PMID: 38272966 PMCID: PMC10811342 DOI: 10.1038/s41598-024-51775-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024] Open
Abstract
In the present paper, multifunctional flower-like nanoparticles were synthesized to be used in the leather finishing. They are capable of conferring simultaneously and synergistic antimicrobial, self-cleaning, light resistance, hydrophobic, mechanical, thermal, and fluorescent properties due to the presence of Ag, TiO2, and SiO2 NPs. These nanoparticles form a "flower-like" structure in which the "pistil" is made up of TiO2 and the "petals" that surround it of silver nanoparticles and silica nanoparticles, whose dimensions are of the order of ten nanometers. Their surfaces enjoy abundant hydrophilic functionalities to be dispersed within inks commonly used during the leather finishing process. Leathers functionalized with these nanomaterials showed significantly improved self-cleaning properties after 15 h of exposure to UV light, and antibacterial properties 10 times higher than that shown by the untreated samples. Aging tests were performed (ISO 105-B02, ISO 17228, SAEJ 2412). ΔE, color variation decreased by approximately 30%, if compared with samples not refined with flower-like NPs. Furthermore, the results of the mechanical tests (ISO 17076, FCA 50444) evidence amazing properties, e.g. abrasion resistance more than significantly improved, increase in resistance from 1500 cycles for the untreated samples to 3000 cycles for the leathers finished with flower-like NPs. The contact angle analysis, capturing the angle that traces the air-water to water-substrate interface from the origin of the air-water-substrate contact point at the edge, is practically unchanged after 10 s in the case of nanoparticles containing finishing.
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Affiliation(s)
- Francesca Fierro
- Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
- Centre NANO_MATES, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
| | - Mariagrazia Iuliano
- Centre NANO_MATES, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
| | - Claudia Cirillo
- Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy.
- Centre NANO_MATES, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy.
| | - Claudia Florio
- Stazione Sperimentale per l'Industria delle Pelli e delle materie concianti-SSIP (Italian National Leather Research Institute), Comprensorio Olivetti, Via Campi Flegrei, 34, 80078, Pozzuoli, NA, Italy
| | - Gaetano Maffei
- Conceria DMD SOLOFRA Spa, Via Celentane, 9, 83029, Solofra, AV, Italy
| | - Andrea Loi
- Mario Levi Italia s.r.l., Via Arzignano, 130, 36072, ChiampoVI, Italy
| | - Todor Batakliev
- Open Laboratory on Experimental Micro and Nano Mechanics (OLEM), Institute of Mechanics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Block 4, 1113, Sofia, Bulgaria
| | - Renata Adami
- Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
| | - Maria Sarno
- Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
- Centre NANO_MATES, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
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43
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Fallahi V, Kordrostami Z, Hosseini M. Sensitivity and quality factor improvement of photonic crystal sensors by geometrical optimization of waveguides and micro-ring resonators combination. Sci Rep 2024; 14:2001. [PMID: 38263207 PMCID: PMC10805923 DOI: 10.1038/s41598-024-52363-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 01/17/2024] [Indexed: 01/25/2024] Open
Abstract
In this work, the process of designing and simulating optical sensors based on photonic crystal (PC) micro-ring resonators (MRRs) has been investigated. According to the PC type, different waveguides and resonators can be designed, and various topologies can be proposed from their combination, for optical sensor applications. Here, the investigated MRR is of the symmetrical micro-hexagonal ring resonator (MHRR) type. Different arrays of MHRR arrangement have been designed to investigate their effects on the output spectrum. The results of the design and simulation of different topologies have been analyzed and compared with other numerical researches. Considering all the necessary aspects of PC optical sensors, a detailed and comprehensive algorithm has been presented for designing these devices and choosing the optimal structure. In a more complementary process, the effects of reflector rods have been investigated, which indicates the existence of similarity and compatibility in the design between the distance of reflector rods and the length of MHRRs to obtain the optimal structure. Finally, the effect of different values of lattice constant and radius of dielectric rods on FWHM, transmission (TR) and resonant wavelength is studied, and the most optimal mode is presented. In order to measure the performance of the proposed optimal sensor, its application for gas detection has been analyzed. TR, FWHM, quality factor (QF), sensitivity (S) and figure of merit (FOM) of the proposed sensor were equal to 96%, 0.31 nm, 2636, 6451 nm/RIU and 2960 RIU-1 respectively. An examination of results from similar research indicates a rational and effective approach for generating diverse topologies, aiming to attain the most optimal configuration for optical sensors employing MRRs. Furthermore, employing a systematic design process based on established principles and the proposed algorithm helps prevent arbitrary parameter variations, facilitating the attainment of desired outcomes in a more streamlined and efficient manner. Given the comprehensive nature of this research, it presents a viable solution for designing optical devices based on MRRs for use in optical integrated circuits (OICs) applications.
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Affiliation(s)
- Vahid Fallahi
- Department of Electrical and Electronic Engineering, and Research Center for Design and Fabrication of Advanced Electronic Devices, Shiraz University of Technology, Shiraz, Iran
| | - Zoheir Kordrostami
- Department of Electrical and Electronic Engineering, and Research Center for Design and Fabrication of Advanced Electronic Devices, Shiraz University of Technology, Shiraz, Iran.
| | - Mehdi Hosseini
- Physics Department, Shiraz University of Technology, Shiraz, Iran.
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44
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Baranowska D, Zielinkiewicz K, Mijowska E, Zielinska B. Sugars induced exfoliation of porous graphitic carbon nitride for efficient hydrogen evolution in photocatalytic water-splitting reaction. Sci Rep 2024; 14:1998. [PMID: 38263348 PMCID: PMC10805789 DOI: 10.1038/s41598-024-52593-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/20/2024] [Indexed: 01/25/2024] Open
Abstract
Photocatalytic hydrogen evolution holds great promise for addressing critical energy and environmental challenges, making it an important area in scientific research. One of the most popular photocatalysts is graphitic carbon nitride (gCN), which has emerged as a noteworthy candidate for hydrogen generation through water splitting. However, ongoing research aims to enhance its properties for practical applications. Herein, we introduce a green approach for the fabrication of porous few-layered gCN with surface modifications (such as oxygen doping, carbon deposition, nitrogen defects) with promoted performance in the hydrogen evolution reaction. The fabrication process involves a one-step solvothermal treatment of bulk graphitic carbon nitride (bulk-gCN) in the presence of different sugars (glucose, sucrose, and fructose). Interestingly, the conducted time-dependent process revealed that porous gCN exfoliated in the presence of fructose at 180 °C for 6 h (fructose_6h) exhibits a remarkable 13-fold promotion of photocatalytic hydrogen evolution compared to bulk-gCN. The studied materials were extensively characterized by microscopic and spectroscopic techniques, allowing us to propose a reaction mechanism for hydrogen evolution during water-splitting over fructose_6h. Furthermore, the study highlights the potential of employing a facile and environmentally friendly fructose-assisted solvothermal process to improve the efficiency and stability of catalysts based on graphitic carbon nitride.
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Affiliation(s)
- Daria Baranowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland.
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland.
| | - Klaudia Zielinkiewicz
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland
| | - Ewa Mijowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland
| | - Beata Zielinska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland.
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland.
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45
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Lahiri S, Basu S. Second order topology in a band engineered Chern insulator. Sci Rep 2024; 14:1880. [PMID: 38253745 PMCID: PMC10810362 DOI: 10.1038/s41598-024-52321-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/17/2024] [Indexed: 01/24/2024] Open
Abstract
Haldane model is a celebrated tight binding toy model of a Chern insulator in a 2D honeycomb lattice that exhibits quantized Hall conductance in the absence of an external magnetic field. In our work, we deform the bands of the Haldane model smoothly by varying one of its three nearest neighbour hopping amplitudes ([Formula: see text]), while keeping the other two (t) fixed. This breaks the [Formula: see text] symmetry of the Hamiltonian, while the [Formula: see text] symmetry is preserved. The symmetry breaking causes the Dirac cones to shift from the K and the K[Formula: see text] points in the Brillouin zone (BZ) to an intermediate M point. This is evident from the Berry curvature plots which show a similar shift in the corresponding values as a function of the deformation parameter, namely [Formula: see text]. We observe two different topological phases of which, one is a topological insulator (TI) and the other is a second order topological insulator (SOTI). The Chern number (C) remains perfectly quantized at a value of [Formula: see text] for the TI phase and it goes to zero in the SOTI phase. Furthermore, the evolution of the Wannier charge center (WCC) as the band is smoothly deformed shows a jump in the TI phase indicating the presence of conducting edge modes. We also study the SOTI phase and diagonalize the real space Hamiltonian on a rhombic supercell which shows the presence of in-gap zero energy corner modes. The polarization of the system, namely [Formula: see text] and [Formula: see text], are evaluated, along the x and the y directions, respectively. We see that both [Formula: see text] and [Formula: see text] are quantized in the SOTI phase owing to the presence of the inversion symmetry of the system. Finally we establish the SOTI phase as an example of a topological phase with zero Berry curvature and provide an analogy with the two dimensional Su-Schrieffer-Heeger model.
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Affiliation(s)
- Srijata Lahiri
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.
| | - Saurabh Basu
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
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46
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Shabbir F, Mujeeb AA, Jawed SF, Khan AH, Shakeel CS. Simulation of transvascular transport of nanoparticles in tumor microenvironments for drug delivery applications. Sci Rep 2024; 14:1764. [PMID: 38242952 PMCID: PMC10798967 DOI: 10.1038/s41598-024-52292-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024] Open
Abstract
Nanomedicine is a promising approach for tumor therapy but penetration is challenged by complex tumor microenvironments. The purpose of this study is to design nanoparticles and analyze their transport in two abnormal microenvironments through a 2-D simulation. Employing a Computational Fluid Dynamics (CFD) approach, tumor vascular-interstitial models were initially simulated, and the impact of nanoparticles on the velocity profile and pressure gradient within the tumor microenvironment was observed. Through meticulous mesh analysis, it was determined that optimal outcomes were achieved using a quadrilateral meshing method for pancreatic tumor and a quad/tri meshing method for hepatic tumor. Results showed an increase in vessel diameter correlated with elevated blood flow velocity, reaching a maximum of 1.40 × 10^-3 m/s with an expanding cell gap. The simulation results for pressure distribution show that as vessel diameter increases, the velocity of nanoparticles in blood increases and decreases the pressure of blood. Intriguingly, distinct fluid flow patterns in pancreatic and hepatic tumors, emphasize how microenvironmental differences, specifically cell pore size, profoundly impact therapeutic agent transport, with implications for drug delivery strategies in cancer therapy. These simulation-based insights enable researchers to anticipate nanofluid behavior in realistic settings. Future work, incorporating immune cells, will enhance the understanding of nanoparticle efficiency in cancer therapy.
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Affiliation(s)
- Fariha Shabbir
- Department of Biomedical Engineering, Faculty of Engineering, Science, Technology and Management (ZUFESTM), Ziauddin University, Karachi, Pakistan.
| | - Amenah Abdul Mujeeb
- Department of Biomedical Engineering, Faculty of Engineering, Science, Technology and Management (ZUFESTM), Ziauddin University, Karachi, Pakistan
| | - Syed Faraz Jawed
- Department of Biomedical Engineering, NED University of Engineering and Technology, Karachi, Pakistan.
| | - Ali Haider Khan
- Department of Biomedical Engineering, Faculty of Engineering, Science, Technology and Management (ZUFESTM), Ziauddin University, Karachi, Pakistan
| | - Choudhary Sobhan Shakeel
- Department of Biomedical Engineering, Faculty of Engineering, Science, Technology and Management (ZUFESTM), Ziauddin University, Karachi, Pakistan
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47
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Malek M, Samipourgiri M, Rashidi A, Majidian N. Reduction of sulfur in fuel oil using Fe 2O 3 hybrid nanoadsorbent by solvent deasphalting and optimization of operational parameters with CCD. Sci Rep 2024; 14:1560. [PMID: 38238496 PMCID: PMC10796671 DOI: 10.1038/s41598-024-52166-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 01/15/2024] [Indexed: 01/22/2024] Open
Abstract
The present study investigated and tested the effect of adding three types of nanoadsorbents (multi-walled carbon nanotubes (MWCNT)) in pure form, multi-walled carbon nanotubes with Fe2O3 particles (MWCNT-Fe2O3) hybrid, and Silanated-Fe2O3 hybrid to heavy fuel oil to reduce sulfur using a deasphalting process with solvent. First, all three types of nanoadsorbents were synthesized. Then, the Central Composite Design (CCD) method was used to identify the parameters effective in deasphalting, such as the type of nanoadsorbent, the weight percentage of nanoadsorbent, and the solvent-to-fuel ratio, and to obtain their optimal values. Based on the optimization result, under laboratory temperature and pressure conditions, the highest percentage of sulfur reduction in deasphalted fuel (DAO) was obtained by adding 2.5% by weight of silanated-Fe2O3 nano-adsorbent and with a solvent-to-fuel ratio of 7.7 (The weight percentage of sulfur in DAO decreased from 3.5% by weight to 2.46%, indicating a decrease of 30%). Additionally, by increasing the temperature to 70 °C, in optimal conditions, the results revealed that the remaining sulfur percentage in DAO decreased to 2.13% by weight, indicating a decrease of 40%. Synthesized nanoadsorbents and asphaltene particles adsorbed on the surfaces of nanoadsorbents were evaluated by XRD, FTIR, FESEM, and TEM techniques.
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Affiliation(s)
- Mohammadreza Malek
- Chemical Engineering Department, Faculty of Engineering, Islamic Azad University, North Tehran Branch, Tehran, 1651153311, Iran
| | - Mohammad Samipourgiri
- Chemical Engineering Department, Faculty of Engineering, Islamic Azad University, North Tehran Branch, Tehran, 1651153311, Iran.
| | - Alimorad Rashidi
- Carbon and Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), Tehran, 14857-33111, Iran
| | - Nasrolah Majidian
- Chemical Engineering Department, Faculty of Engineering, Islamic Azad University, North Tehran Branch, Tehran, 1651153311, Iran
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48
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Shehab WS, Elsayed DA, Abdel Hamid AM, Assy MG, Mouneir SM, Hamed EO, Mousa SM, El-Bassyouni GT. CuO nanoparticles for green synthesis of significant anti-Helicobacter pylori compounds with in silico studies. Sci Rep 2024; 14:1608. [PMID: 38238369 PMCID: PMC10796945 DOI: 10.1038/s41598-024-51708-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/08/2024] [Indexed: 01/22/2024] Open
Abstract
Helicobacter pylori (H. pylori) is a universal health intimidation as mentioned by the World Health Organization. The primary causal agent linked to a number of illnesses, including inflammation and the development of stomach ulcers, is Helicobacter pylori. Since, H. pylori develops antibiotic resistance quickly, current H. pylori treatment approaches are becoming less effective. Our research aims to highlight novel formulation antibiotics using CuO-NPs as catalysts and studied their activity as anti-helicobacter pylori supported by computational studies (POM analysis and molecular docking) software. They were designed for anti-Helicobacter Pylori action. All compounds revealed a bactericidal effect better than the reference McFarland standards.
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Grants
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Open access funding provided by Te Science, Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB).
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- STDF Technology & Innovation Funding Authority (STDF) in cooperation with Te Egyptian Knowledge Bank (EKB)., STDF
- Zagazig University
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Affiliation(s)
- Wesam S Shehab
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt.
| | - Doaa A Elsayed
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt.
| | - Atef M Abdel Hamid
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
| | - Mohamed G Assy
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
| | - Samar M Mouneir
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Cairo, 12211, Egypt
| | - Eman O Hamed
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
| | - Sahar M Mousa
- Inorganic Chemistry Department, National Research Centre, 33 El-Buhouth St., Dokki, Cairo, 12622, Egypt
| | - Gehan T El-Bassyouni
- Ceramics and Building Materials Department, National Research Centre, 33 El-Buhouth St., Dokki, Cairo, 12622, Egypt
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49
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El-Khatib AM, Zard K, Abbas MI, Gouda MM. Novel composite based on silicone rubber and a nano mixture of SnO 2, Bi 2O 3, and CdO for gamma radiation protection. Sci Rep 2024; 14:1578. [PMID: 38238486 PMCID: PMC10796670 DOI: 10.1038/s41598-024-51965-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/11/2024] [Indexed: 01/22/2024] Open
Abstract
Recently, there has been a surge of interest in the application of radiation-shielding materials. One promising research avenue involves using free-lead metal oxides/polymer composites, which have been studied for their radiation shielding and characterization properties. This study reinforced the dimethylpolysiloxane (silicone rubber) composites with micro- and nano-sized particles of tin oxide, cadmium oxide, and bismuth oxide as additive materials. The composites were tested with 20 and 50 weight fractions, and their attenuation coefficients were measured using a NaI(TI) detector at gamma-ray energies ranging from 59.54 to 1408.01 keV. Also, the thermal and mechanical properties of the composites were observed and compared with those of free silicone rubber. The results showed that the 50% nano metal oxide/SR composites exhibited better thermal stability and attenuation properties than the other composites, also possessing unique attributes such as lightweight composition and exceptional flexibility. Consequently, this composite material holds immense potential for safeguarding vital organs, including the eyes and gonads, during radiological diagnosis or treatment procedures. Its exceptional ability to absorb a significant portion of incident rays makes it an invaluable asset in the field of radiation protection.
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Affiliation(s)
- Ahmed M El-Khatib
- Physics Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt
| | - Kareman Zard
- Medical Physics and Radiotherapy Department, Alexandria Ayadi Almostakbal Oncology Hospital, Alexandria, Egypt
| | - Mahmoud I Abbas
- Physics Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt
| | - Mona M Gouda
- Physics Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt.
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50
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Uddin MG, Das S, Shafi AM, Wang L, Cui X, Nigmatulin F, Ahmed F, Liapis AC, Cai W, Yang Z, Lipsanen H, Hasan T, Yoon HH, Sun Z. Broadband miniaturized spectrometers with a van der Waals tunnel diode. Nat Commun 2024; 15:571. [PMID: 38233431 PMCID: PMC10794200 DOI: 10.1038/s41467-024-44702-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024] Open
Abstract
Miniaturized spectrometers are of immense interest for various on-chip and implantable photonic and optoelectronic applications. State-of-the-art conventional spectrometer designs rely heavily on bulky dispersive components (such as gratings, photodetector arrays, and interferometric optics) to capture different input spectral components that increase their integration complexity. Here, we report a high-performance broadband spectrometer based on a simple and compact van der Waals heterostructure diode, leveraging a careful selection of active van der Waals materials- molybdenum disulfide and black phosphorus, their electrically tunable photoresponse, and advanced computational algorithms for spectral reconstruction. We achieve remarkably high peak wavelength accuracy of ~2 nanometers, and broad operation bandwidth spanning from ~500 to 1600 nanometers in a device with a ~ 30×20 μm2 footprint. This diode-based spectrometer scheme with broadband operation offers an attractive pathway for various applications, such as sensing, surveillance and spectral imaging.
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Affiliation(s)
- Md Gius Uddin
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
- QTF Centre of Excellence, Aalto University, Aalto, 00076, Finland
| | - Susobhan Das
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
| | - Abde Mayeen Shafi
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
| | - Lei Wang
- Key Lab of Education Ministry for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaoqi Cui
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
- QTF Centre of Excellence, Aalto University, Aalto, 00076, Finland
| | - Fedor Nigmatulin
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
- QTF Centre of Excellence, Aalto University, Aalto, 00076, Finland
| | - Faisal Ahmed
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
| | - Andreas C Liapis
- QTF Centre of Excellence, Aalto University, Aalto, 00076, Finland
| | - Weiwei Cai
- Key Lab of Education Ministry for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zongyin Yang
- College of Information Science and Electronic Engineering and State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, 310027, China
| | - Harri Lipsanen
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
| | - Tawfique Hasan
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - Hoon Hahn Yoon
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
- Department of Semiconductor Engineering, School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Zhipei Sun
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland.
- QTF Centre of Excellence, Aalto University, Aalto, 00076, Finland.
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