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Ekanayake RSK, Streltsov VA, Best SP, Chantler CT. Nanostructure and dynamics of N-truncated copper amyloid-β peptides from advanced X-ray absorption fine structure. IUCrJ 2024; 11:S2052252524001830. [PMID: 38602752 DOI: 10.1107/s2052252524001830] [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] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 02/26/2024] [Indexed: 04/12/2024]
Abstract
An X-ray absorption spectroscopy (XAS) electrochemical cell was used to collect high-quality XAS measurements of N-truncated Cu:amyloid-β (Cu:Aβ) samples under near-physiological conditions. N-truncated Cu:Aβ peptide complexes contribute to oxidative stress and neurotoxicity in Alzheimer's patients' brains. However, the redox properties of copper in different Aβ peptide sequences are inconsistent. Therefore, the geometry of binding sites for the copper binding in Aβ4-8/12/16 was determined using novel advanced extended X-ray absorption fine structure (EXAFS) analysis. This enables these peptides to perform redox cycles in a manner that might produce toxicity in human brains. Fluorescence XAS measurements were corrected for systematic errors including defective-pixel data, monochromator glitches and dispersion of pixel spectra. Experimental uncertainties at each data point were measured explicitly from the point-wise variance of corrected pixel measurements. The copper-binding environments of Aβ4-8/12/16 were precisely determined by fitting XAS measurements with propagated experimental uncertainties, advanced analysis and hypothesis testing, providing a mechanism to pursue many similarly complex questions in bioscience. The low-temperature XAS measurements here determine that CuII is bound to the first amino acids in the high-affinity amino-terminal copper and nickel (ATCUN) binding motif with an oxygen in a tetragonal pyramid geometry in the Aβ4-8/12/16 peptides. Room-temperature XAS electrochemical-cell measurements observe metal reduction in the Aβ4-16 peptide. Robust investigations of XAS provide structural details of CuII binding with a very different bis-His motif and a water oxygen in a quasi-tetrahedral geometry. Oxidized XAS measurements of Aβ4-12/16 imply that both CuII and CuIII are accommodated in an ATCUN-like binding site. Hypotheses for these CuI, CuII and CuIII geometries were proven and disproven using the novel data and statistical analysis including F tests. Structural parameters were determined with an accuracy some tenfold better than literature claims of past work. A new protocol was also developed using EXAFS data analysis for monitoring radiation damage. This gives a template for advanced analysis of complex biosystems.
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Surdo S, Barillaro G. Voltage- and Metal-assisted Chemical Etching of Micro and Nano Structures in Silicon: A Comprehensive Review. Small 2024:e2400499. [PMID: 38644330 DOI: 10.1002/smll.202400499] [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] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/12/2024] [Indexed: 04/23/2024]
Abstract
Sculpting silicon at the micro and nano scales has been game-changing to mold bulk silicon properties and expand, in turn, applications of silicon beyond electronics, namely, in photonics, sensing, medicine, and mechanics, to cite a few. Voltage- and metal-assisted chemical etching (ECE and MaCE, respectively) of silicon in acidic electrolytes have emerged over other micro and nanostructuring technologies thanks to their unique etching features. ECE and MaCE have enabled the fabrication of novel structures and devices not achievable otherwise, complementing those feasible with the deep reactive ion etching (DRIE) technology, the gold standard in silicon machining. Here, a comprehensive review of ECE and MaCE for silicon micro and nano machining is provided. The chemistry and physics ruling the dissolution of silicon are dissected and similarities and differences between ECE and MaCE are discussed showing that they are the two sides of the same coin. The processes governing the anisotropic etching of designed silicon micro and nanostructures are analyzed, and the modulation of etching profile over depth is discussed. The preparation of micro- and nanostructures with tailored optical, mechanical, and thermo(electrical) properties is then addressed, and their applications in photonics, (bio)sensing, (nano)medicine, and micromechanical systems are surveyed. Eventually, ECE and MaCE are benchmarked against DRIE, and future perspectives are highlighted.
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Affiliation(s)
- Salvatore Surdo
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, Pisa, 56122, Italy
| | - Giuseppe Barillaro
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, Pisa, 56122, Italy
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3
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Miyamori Y, Tong L, Nabae Y, Hatakeyama-Sato K, Hayakawa T. Core-Shell Double Gyroids Directed by Selective Solvation for ABC Triblock Terpolymers. Macromol Rapid Commun 2024:e2400093. [PMID: 38639102 DOI: 10.1002/marc.202400093] [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: 02/14/2024] [Revised: 04/16/2024] [Indexed: 04/20/2024]
Abstract
The formation of ABC triblock terpolymers through solution casting is still challenging. In this study, we fabricated core-shell double gyroid network structures via solution casting using poly(2,2,2-trifluoroethyl methacrylate)-b-poly(4-vinylpyridine)-b-polystyrene (FPS) triblock terpolymers in N,N-dimethylformamide (DMF). Upon heat treatment, the polymer tended to form a sphere-in-lamellar structure at the F/S interface. Given the solubility properties of each component in DMF, it was anticipated that the effective volume fraction of F relative to P would increase in concentrated solutions and the effective volume fraction of S would decrease. The microphase-separated structure derived from the DMF solution consistently resulted in the formation of a network structure composed of a core-shell double gyroid, with F as the matrix, P as the shell, and S as the core, and their periodic lengths gradually increased to 110.8, 131.8, and 162.7 nm as increase molecular weight of PS blocks to 13.8, 20.7, and 28.8 kg mol-1. Based on the solubility properties of the polymer components highlighted in this study, the solvent selection strategy is broadly applicable to ABC triblock terpolymers featuring various polymer components, offering a more efficient avenue for fabricating core-shell double gyroid structures. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yuta Miyamori
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 S8-36 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Liang Tong
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Rare Earth Building B512, No.156 Kejia Avenue, Ganzhou City, Jiangxi Province, China
| | - Yuta Nabae
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 S8-36 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Kan Hatakeyama-Sato
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 S8-36 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Teruaki Hayakawa
- Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 S8-36 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
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Wang J, Li H, Warr GG, Chen F, Atkin R. Nanostructure and Dynamics of Aprotic Ionic Liquids at Graphite Electrodes as a Function of Potential. Small 2024:e2311353. [PMID: 38573945 DOI: 10.1002/smll.202311353] [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] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/05/2024] [Indexed: 04/06/2024]
Abstract
Atomic force microscope (AFM) videos reveal the near-surface nanostructure and dynamics of the ionic liquids (ILs) 1-butyl-3-methylimidazolium dicyanamide (BMIM DCA) and 1-hexyl-3-methylimidazolium dicyanamide (HMIM DCA) above highly oriented pyrolytic graphite (HOPG) electrodes as a function of surface potential. Molecular dynamics (MD) simulations reveal the molecular-level composition of the nanostructures. In combination, AFM and MD show that the near-surface aggregates form via solvophobic association of the cation alkyl chains at the electrode interface. The diffusion coefficients of interfacial nanostructures are ≈0.01 nm2 s-1 and vary with the cation alkyl chain length and the surface potential. For each IL, the nanostructure diffusion coefficients are similar at open-circuit potential (OCP) and OCP + 1V, but BMIM DCA moves about twice as fast as HMIM DCA. At negative potentials, the diffusion coefficient decreases for BMIM DCA and increases for HMIM DCA. When the surface potential is switched from negative to positive, a sudden change in the direction of the nanostructure motion is observed for both BMIM DCA and HMIM DCA. No transient dynamics are noted following other potential jumps. This study provides a new fundamental understanding regarding the dynamics of electrochemically stable ILs at electrodes vital for the rational development of IL-based electrochemical devices.
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Affiliation(s)
- Jianan Wang
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Perth, WA, 6009, Australia
| | - Hua Li
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Perth, WA, 6009, Australia
- Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, 35 Stirling Hwy, Perth, WA, 6009, Australia
| | - Gregory G Warr
- School of Chemistry and Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Fangfang Chen
- Institute for Frontier Materials (IFM), Deakin University, Waurn Ponds, Geelong, VIC, 3216, Australia
| | - Rob Atkin
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Perth, WA, 6009, Australia
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Liu J, Chen X, Lv H, He S, Fan Y. High-sensitivity immunoassay on interdigitated electrode to detect osteoporosis biological marker. Biotechnol Appl Biochem 2024; 71:256-263. [PMID: 38053502 DOI: 10.1002/bab.2537] [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: 10/12/2023] [Accepted: 11/10/2023] [Indexed: 12/07/2023]
Abstract
Osteoporosis is with porous bones, which refers to a decrease in the bone mineral density and weakens the bones to become brittle. Osteoporosis often progresses without any pain or symptoms until the bone fractures. Monitoring the condition of bone regularly helps to identify the bone that weakens at its earlier stages. In general, radiological techniques have been used to measure bone mineral density, are expensive, and the procedures are complicated. Therefore, researchers are focusing on the alternative method of biomarker quantification to identify bone mineral density. This research work was focused on quantifying the osteoporosis biomarker of C-terminal telopeptide of type I collagen (CTX-I) on an interdigitated electrode (IDE) sensor. Gold nanomaterial-modified anti-CTX-I antibody was attached to silica nanomaterial-decorated IDE and then identified by CTX-I interaction. Higher immobilization of antibodies was recorded on diamond-modified IDE through gold nanoparticles, and detected CTX-I as low as 0.5 pg/mL [y = 1.5507x - 0.9043 R2 = 0.9715], determined on a linear curve at the range 0.5-3.5 ng/mL. Further, specific identification of CTX-I was confirmed by control performances with osteopontin, IL-6, and anti-IgG antibody.
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Affiliation(s)
- Jianwen Liu
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Xiaohai Chen
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Hanlin Lv
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Shuming He
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
| | - Yong Fan
- Orthopedics, The People's Hospital of Renshou County, Renshou, Sichuan, People's Republic of China
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6
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Wen H, Weng B, Wang B, Xiao W, Liu X, Wang Y, Zhang M, Huang H. Advancements in Transparent Conductive Oxides for Photoelectrochemical Applications. Nanomaterials (Basel) 2024; 14:591. [PMID: 38607125 PMCID: PMC11013100 DOI: 10.3390/nano14070591] [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] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/17/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024]
Abstract
Photoelectrochemical cells (PECs) are an important technology for converting solar energy, which has experienced rapid development in recent decades. Transparent conductive oxides (TCOs) are also gaining increasing attention due to their crucial role in PEC reactions. This review comprehensively delves into the significance of TCO materials in PEC devices. Starting from an in-depth analysis of various TCO materials, this review discusses the properties, fabrication techniques, and challenges associated with these TCO materials. Next, we highlight several cost-effective, simple, and environmentally friendly methods, such as element doping, plasma treatment, hot isostatic pressing, and carbon nanotube modification, to enhance the transparency and conductivity of TCO materials. Despite significant progress in the development of TCO materials for PEC applications, we at last point out that the future research should focus on enhancing transparency and conductivity, formulating advanced theories to understand structure-property relationships, and integrating multiple modification strategies to further improve the performance of TCO materials in PEC devices.
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Affiliation(s)
- He Wen
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, China; (H.W.); (B.W.); (X.L.); (Y.W.)
| | - Bo Weng
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;
| | - Bing Wang
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, China; (H.W.); (B.W.); (X.L.); (Y.W.)
| | - Wenbo Xiao
- Key Laboratory of Nondestructive Test, Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China;
| | - Xiao Liu
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, China; (H.W.); (B.W.); (X.L.); (Y.W.)
| | - Yiming Wang
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, China; (H.W.); (B.W.); (X.L.); (Y.W.)
| | - Menglong Zhang
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, China; (H.W.); (B.W.); (X.L.); (Y.W.)
- Zhejiang Xinke Semiconductor Co., Ltd., Hangzhou 311421, China
| | - Haowei Huang
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), Department of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium;
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Kan Z, Wang Z, Ren H, Shen M. Carbon Dioxide Pressure and Catalyst Quantity Dependencies in Artificial Photosynthesis of Hydrocarbon Chains on Nanostructured Co/CoO Surfaces. Molecules 2024; 29:1481. [PMID: 38611761 PMCID: PMC11013242 DOI: 10.3390/molecules29071481] [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: 03/07/2024] [Revised: 03/24/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
In this study, we investigated the influence of pressure and the quantity of Co/CoO catalyst on an artificial photosynthesis process that converts CO2 and H2O into hydrocarbons (CnH2n+2, where n ≤ 18). The adsorption of CO2 and H2O on Co/CoO surfaces proved to be pivotal in this photo-catalytic reaction. Photoexcited carbon dioxide and water molecules ((CO2)* and (H2O)*) generated by illuminating the catalyst surface led to the formation of alkene hydrocarbon molecules with carbon numbers following an approximate Poisson distribution. The optimal pressure was found to be 0.40 MPa. Pressure less than 0.40 MPa resulted in low CO2 adsorption, impeding excitation for photosynthesis. At greater pressure, oil/wax accumulation on Co/CoO surfaces hindered CO2 adsorption, limiting further photosynthesis reactions. The average number of carbon atoms in the hydrocarbons and hydrocarbon yield were correlated. The amount of Co/CoO was also found to affect the hydrocarbon yield. Our study contributes to the understanding of Co/CoO-catalyzed photosynthesis and suggests that an open-flow system could potentially enhance the productivity of long-chain hydrocarbons.
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Affiliation(s)
- Zhe Kan
- Department of Physics and Applied Physics, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA
| | - Zibo Wang
- Department of Physics and Applied Physics, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA
| | - Haizhou Ren
- Department of Physics and Applied Physics, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA
| | - Mengyan Shen
- Department of Physics and Applied Physics, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA
- Center for Advanced Manufacturing of Polymers and Soft Materials, University of Massachusetts Lowell, One University Avenue, Lowell, MA 01854, USA
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Gomes F, Ribeiro AC, Sanches GS, Borges HS, Takahashi LAU, Daniel-Ribeiro CT, Tedesco AC, Nascimento JWL, Carvalho LJM. A nanochitosan-D-galactose formulation increases the accumulation of primaquine in the liver. Antimicrob Agents Chemother 2024:e0091523. [PMID: 38517190 DOI: 10.1128/aac.00915-23] [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: 07/11/2023] [Accepted: 02/25/2024] [Indexed: 03/23/2024] Open
Abstract
Primaquine is the mainstream antimalarial drug to prevent Plasmodium vivax relapses. However, this drug can induce hemolysis in patients with glucose-6-phosphate dehydrogenase deficiency. Nanostructure formulations of primaquine loaded with D-galactose were used as a strategy to target the drug to the liver and decrease the hemolytic risks. Nanoemulsion (NE-Pq) and nanochitosan (NQ-Pq) formulations of primaquine diphosphate containing D-galactose were prepared and characterized by their physicochemistry properties. Pharmacokinetic and biodistribution studies were conducted using Swiss Webster mice. A single dose of 10 mg/kg of each nanoformulation or free primaquine solution was administered by gavage to the animals, which were killed at 0.5, 1, 2, 4, 8, and 24 hours. Blood samples and tissues were collected, processed, and analyzed by high-performance liquid chromatography. The nanoformulation showed sizes around 200 nm (NE-Pq) and 400 nm (NQ-Pq) and physicochemical stability for over 30 days. Free primaquine solution achieved higher primaquine Cmax in the liver than NE-Pq or NQ-Pq at 0.5 hours. However, the half-life and mean residence time (MRT) of primaquine in the liver were three times higher with the NQ-Pq formulation than with free primaquine, and the volume distribution was four times higher. Conversely, primaquine's half-life, MRT, and volume distribution in the plasma were lower for NQ-Pq than for free primaquine. NE-Pq, on the other hand, accumulated more in the lungs but not in the liver. Galactose-coated primaquine nanochitosan formulation showed increased drug targeting to the liver compared to free primaquine and may represent a promising strategy for a more efficient and safer radical cure for vivax malaria.
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Affiliation(s)
- F Gomes
- Laboratory of Malaria Research, Oswaldo Cruz Institute (IOC/Fiocruz), Reference Center for Malaria Research, Diagnosis and Training, Rio de Janeiro, Brazil
| | - A C Ribeiro
- Laboratory of Malaria Research, Oswaldo Cruz Institute (IOC/Fiocruz), Reference Center for Malaria Research, Diagnosis and Training, Rio de Janeiro, Brazil
- Department of Pharmacology (LaFaCE) - ICB, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | - G S Sanches
- Laboratory of Malaria Research, Oswaldo Cruz Institute (IOC/Fiocruz), Reference Center for Malaria Research, Diagnosis and Training, Rio de Janeiro, Brazil
| | - H S Borges
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - L A U Takahashi
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - C T Daniel-Ribeiro
- Laboratory of Malaria Research, Oswaldo Cruz Institute (IOC/Fiocruz), Reference Center for Malaria Research, Diagnosis and Training, Rio de Janeiro, Brazil
| | - A C Tedesco
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering - Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - J W L Nascimento
- Department of Pharmacology (LaFaCE) - ICB, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | - L J M Carvalho
- Laboratory of Malaria Research, Oswaldo Cruz Institute (IOC/Fiocruz), Reference Center for Malaria Research, Diagnosis and Training, Rio de Janeiro, Brazil
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Ritz AJ, Stuehr OM, Comer DN, Lazenby RA. Controlling Gold Morphology Using Electrodeposition for the Preparation of Electrochemical Aptamer-Based Sensors. ACS Appl Bio Mater 2024; 7:1925-1935. [PMID: 38369768 DOI: 10.1021/acsabm.3c01254] [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] [Indexed: 02/20/2024]
Abstract
Nanostructuring of gold surfaces to enhance electroactive surface area has proven to significantly enhance the performance of electrochemical aptamer-based (E-AB) sensors, particularly for electrodes on the microscale. Unlike for sensors fabricated on polished gold surfaces, predicting the behavior of E-AB sensors on surfaces with varied gold morphologies becomes more intricate due to the effects of surface roughness and the shapes and sizes of surface features on supporting a self-assembled monolayer. In this study, we explored the impact of gold morphology characteristics on sensor performance, evaluating parameters such as signal change in response to the addition of the target analyte, aptamer probe packing density, and continuous sensing ability. Our findings reveal that surface area enhancement can either enhance or diminish sensor performance for gold nanostructured E-AB sensors, contingent upon the surface morphology. In particular, our results indicate that the aptamer packing density and target analyte signal change results are heavily dependent on gold nanostructure size and features. Sensing surfaces with larger nanoparticle diameters, which were prepared using electrodeposition at a constant potential, had a reduced aptamer packing density and exhibited diminished sensor performance. However, the equivalent packing density of polished electrodes did not yield the equivalent signal change. Other surfaces that were prepared using pulsed waveform electrodeposition achieved optimal signal change with a deposition time, tdep, of 120 s, and increased deposition time with enhanced electroactive surface area resulted in minimized signal changes and more rapid sensor degradation. By investigating sensing surfaces with varied morphologies, we have demonstrated that enhancing the electroactive surface does not always enhance the signal change of the sensor, and aptamer packing density alone does not dictate observed signal change trends. We anticipate that understanding how electrodeposition techniques enhance or diminish sensor performance will pave the way for further exploration of nanostructure-aptamer relationships, contributing to the future development of optimized, miniaturized electrochemical aptamer-based sensors for continuous, in vivo sensing.
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Affiliation(s)
- Amanda J Ritz
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Olivia M Stuehr
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Danté N Comer
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Robert A Lazenby
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
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Alshammari OAO, Azzam EMS, Alhar MS, Alanazi KD, Aljuhani SAA, Elsofany WI. Antibacterial and Anticandidal Activity of the Nanostructural Composite of a Spirothiazolidine-Derivative Assembled on Silver Nanoparticles. Molecules 2024; 29:1139. [PMID: 38474650 DOI: 10.3390/molecules29051139] [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: 01/31/2024] [Revised: 02/17/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024] Open
Abstract
Our aims in this work are the preparation of an ionic liquid based on heterocyclic compounds with Ag nanoparticles and the investigation of its application as an antibacterial and anticandidal agent. These goals were achieved through the fabrication of an ionic liquid based on Ag nanoparticles with 5-Amino-3-(4-fluorophenyl)-N-hexadecyl-7-(4-methylphenyl)-2-H spiro[cyclohexane1,2'-[1,3]thiazolo [4,5-b]pyridine]-6-carbonitrile (P16). The nanostructure of the prepared ionic liquid was characterized using techniques such as FTIR, 1HNMR, 13CNMR, UV, SEM, and TEM. The biological activity of the prepared compound (P16) and its nanocomposites with Ag nanoparticles was tested using five clinical bacteria (Pseudomonas aeruginosa 249; Escherichia coli 141; Enterobacter cloacae 235; Staphylococcus epidermidis BC 161, and methicillin-resistant S. aureus 217), and three Candida species (Candida utilis ATCC 9255; C. tropicalis ATCC 1362, and C. albicans ATCC 20402). The FTIR, 1HNMR, and 13CNMR results confirmed the chemical structure of the synthesized P16 compound. The nanostructure of the prepared ionic liquid was determined based on data obtained from the UV, SEM, and TEM tests. The antibacterial and anticandidal results showed that the biological activity of the compound (P16) was enhanced after the formation of nanocomposite structures with Ag nanoparticles. Moreover, the biological activity of the compound itself (P16) and that of its nanocomposite structure with Ag nanoparticles was higher than that of ampicillin and amphotericin B, which were used as control drugs in this work.
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Affiliation(s)
- Odeh A O Alshammari
- Department of Chemistry, College of Science, University of Ha'il, Ha'il 81451, Saudi Arabia
| | - Eid M S Azzam
- Department of Chemistry, College of Science, University of Ha'il, Ha'il 81451, Saudi Arabia
- Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Munirah S Alhar
- Department of Chemistry, College of Science, University of Ha'il, Ha'il 81451, Saudi Arabia
| | - Kaseb D Alanazi
- Department of Chemistry, College of Science, University of Ha'il, Ha'il 81451, Saudi Arabia
| | - Sara A A Aljuhani
- Department of Chemistry, College of Science, University of Ha'il, Ha'il 81451, Saudi Arabia
| | - Walaa I Elsofany
- Department of Chemistry, College of Science, University of Ha'il, Ha'il 81451, Saudi Arabia
- Photochemistry Department, Chemical Industries Research Institute, National Research Centre, 33 EL Buhouth St., Dokki, Giza 12622, Egypt
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Pradhan BK, Tyagi P, Pal S, Mauraya AK, Roopa, Aggarwal V, Pal P, Kushvaha SS, Muthusamy SK. Role of Surface Chemistry of Ta Metal Foil on the Growth of GaN Nanorods by Laser Molecular Beam Epitaxy and Their Field Emission Characteristics. ACS Appl Mater Interfaces 2024. [PMID: 38427781 DOI: 10.1021/acsami.3c16892] [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] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
This study investigates the influence of surface nitridation of Ta metal foil substrates on the growth of GaN nanorods using the laser molecular beam epitaxy (LMBE) technique and the field emission characteristics of the grown GaN nanorod ensemble. Surface morphology examinations underscore the pivotal role of Ta foil nitridation in shaping the dimensions and densities of GaN nanorods. Bare Ta foil fosters the formation of high-density, vertically self-aligned GaN nanorods at a growth temperature of 700 °C. Furthermore, the density of these nanorods is directly related to the duration of Ta foil nitridation, with increased duration leading to a reduced nanorod density. X-ray Photoelectron Spectroscopy (XPS) studies reveal that the transition of the Ta foil surface from tantalum oxide to tantalum nitride during nitridation emerges as a crucial factor influencing GaN nanorod growth. Photoluminescence (PL) spectroscopy at ambient temperature reveals a strong near-band-edge (NBE) emission peak with negligible defect-related peaks, displaying the high optical quality of the GaN nanorods. The highly dense vertically aligned GaN nanorod ensemble growth without Ta prenitridation exhibits the most favorable field emission performance, featuring a turn-on field of 2.1 V/μm, a field enhancement factor of 2480, and a stable long-term operation at the emission current density of 2.26 mA/cm2. This study advances the understanding of the role of the surface chemistry of metal foil in determining GaN nanorod growth and opens up exciting possibilities for tailoring advanced optoelectronic devices for specific application requirements.
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Affiliation(s)
- Bipul Kumar Pradhan
- CSIR─National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Prashant Tyagi
- CSIR─National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Samanta Pal
- CSIR─Central Glass and Ceramic Research Institute, 196, Raja S. C. Mullick Road, Kolkata 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amit Kumar Mauraya
- CSIR─National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Roopa
- CSIR─National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vishnu Aggarwal
- CSIR─National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Prabir Pal
- CSIR─Central Glass and Ceramic Research Institute, 196, Raja S. C. Mullick Road, Kolkata 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sunil Singh Kushvaha
- CSIR─National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Senthil Kumar Muthusamy
- CSIR─National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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12
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Blackburn E. Characterizing self-assembled structures made with magnetic Janus nanoparticles. IUCrJ 2024; 11:131-132. [PMID: 38427456 PMCID: PMC10916292 DOI: 10.1107/s2052252524001532] [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] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Small-angle X-ray scattering has revealed how magnetic Janus particles pair up in solutions in small and large magnetic fields.
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Affiliation(s)
- Elizabeth Blackburn
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, SE-22100 Lund, Sweden
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13
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Kutukova K, Lechowski B, Grenzer J, Krueger P, Clausner A, Zschech E. Laboratory High-Contrast X-ray Microscopy of Copper Nanostructures Enabled by a Liquid-Metal-Jet X-ray Source. Nanomaterials (Basel) 2024; 14:448. [PMID: 38470778 DOI: 10.3390/nano14050448] [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] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024]
Abstract
High-resolution imaging of Cu/low-k on-chip interconnect stacks in advanced microelectronic products is demonstrated using full-field transmission X-ray microscopy (TXM). The comparison of two lens-based laboratory X-ray microscopes that are operated at two different photon energies, 8.0 keV and 9.2 keV, shows a contrast enhancement for imaging of copper nanostructures embedded in insulating organosilicate glass of a factor of 5 if 9.2 keV photons are used. Photons with this energy (Ga-Kα radiation) are generated from a Ga-containing target of a laboratory X-ray source applying the liquid-metal-jet technology. The 5 times higher contrast compared to the use of Cu-Kα radiation (8.0 keV photon energy) from a rotating anode X-ray source is caused by the fact that the energy of the Ga-Kα emission line is slightly higher than that of the Cu-K absorption edge (9.0 keV photon energy). The use of Ga-Kα radiation is of particular advantage for imaging of copper interconnects with dimensions from several 100 nm down to several 10 nm in a Cu/SiO2 or Cu/low-k backend-of-line stack. Physical failure analysis and reliability engineering in the semiconductor industry will benefit from high-contrast X-ray images of sub-μm copper structures in microchips.
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Affiliation(s)
| | | | - Joerg Grenzer
- deepXscan GmbH, Zeppelinstr. 1, 01324 Dresden, Germany
| | - Peter Krueger
- Fraunhofer Institute for Ceramic Technologies and Systems, Maria-Reiche-Str. 5, 01099 Dresden, Germany
| | - André Clausner
- Fraunhofer Institute for Ceramic Technologies and Systems, Maria-Reiche-Str. 5, 01099 Dresden, Germany
| | - Ehrenfried Zschech
- deepXscan GmbH, Zeppelinstr. 1, 01324 Dresden, Germany
- Research Area Nanomaterials, Brandenburg University of Technology Cottbus-Senftenberg, Konrad-Zuse-Str. 1, 03046 Cottbus, Germany
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14
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Park G, Na W, Lim JW, Park C, Lee S, Yeom M, Ga E, Hwang J, Moon S, Jeong DG, Jeong HH, Song D, Haam S. Self-Assembled Nanostructures Presenting Repetitive Arrays of Subunit Antigens for Enhanced Immune Response. ACS Nano 2024; 18:4847-4861. [PMID: 38189789 DOI: 10.1021/acsnano.3c09672] [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] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Infectious diseases pose persistent threats to public health, demanding advanced vaccine technologies. Nanomaterial-based delivery systems offer promising solutions to enhance immunogenicity while minimizing reactogenicity. We introduce a self-assembled vaccine (SAV) platform employing antigen-polymer conjugates designed to facilitate robust immune responses. The SAVs exhibit efficient cellular uptake by dendritic cells (DCs) and macrophages, which are crucial players in the innate immune system. The high-density antigen presentation of this SAV platform enhances the affinity for DCs through multivalent recognition, significantly augmenting humoral immunity. SAV induced high levels of immunoglobulin G (IgG), IgG1, and IgG2a, suggesting that mature DCs efficiently induced B cell activation through multivalent antigen recognition. Universality was confirmed by applying it to respiratory viruses, showcasing its potential as a versatile vaccine platform. Furthermore, we have also demonstrated strong protection against influenza A virus infection with SAV containing hemagglutinin, which is used in influenza A virus subunit vaccines. The efficacy and adaptability of this nanostructured vaccine present potential utility in combating infectious diseases.
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Affiliation(s)
- Geunseon Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Woonsung Na
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jong-Woo Lim
- Department of Virology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Chaewon Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Sojeong Lee
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Minjoo Yeom
- Department of Virology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Eulhae Ga
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jaehyun Hwang
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Suyun Moon
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dae Gwin Jeong
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
- Department of Proteome Structural Biology, KRIBB School of Bioscience, University of Science and Technology, Daejeon 34141, Republic of Korea
| | | | - Daesub Song
- Department of Virology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Seungjoo Haam
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
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15
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Yang Y, Zhang R, Liang Z, Guo J, Chen B, Zhou S, Yu D. Application of Electrospun Drug-Loaded Nanofibers in Cancer Therapy. Polymers (Basel) 2024; 16:504. [PMID: 38399882 PMCID: PMC10892891 DOI: 10.3390/polym16040504] [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] [Revised: 02/03/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
In the 21st century, chemotherapy stands as a primary treatment method for prevalent diseases, yet drug resistance remains a pressing challenge. Utilizing electrospinning to support chemotherapy drugs offers sustained and controlled release methods in contrast to oral and implantable drug delivery modes, which enable localized treatment of distinct tumor types. Moreover, the core-sheath structure in electrospinning bears advantages in dual-drug loading: the core and sheath layers can carry different drugs, facilitating collaborative treatment to counter chemotherapy drug resistance. This approach minimizes patient discomfort associated with multiple-drug administration. Electrospun fibers not only transport drugs but can also integrate metal particles and targeted compounds, enabling combinations of chemotherapy with magnetic and heat therapies for comprehensive cancer treatment. This review delves into electrospinning preparation techniques and drug delivery methods tailored to various cancers, foreseeing their promising roles in cancer treatment.
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Affiliation(s)
- Yaoyao Yang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China; (R.Z.); (Z.L.); (J.G.); (B.C.); (S.Z.)
| | | | | | | | | | | | - Dengguang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China; (R.Z.); (Z.L.); (J.G.); (B.C.); (S.Z.)
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16
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Corbet CHWA, van den Bersselaar BWL, de Waal BFM, Reynaerts R, Mali KS, De Feyter S, Jonas AM, Meijer EW, Vantomme G. Self-Assembly of Discrete Oligomers of Naphthalenediimides in Bulk and on Surfaces. Chemistry 2024; 30:e202303107. [PMID: 38009432 DOI: 10.1002/chem.202303107] [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: 09/25/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 11/28/2023]
Abstract
Here, we report on the synthesis of discrete oligomers of alkyl-bridged naphthalenediimides (NDIs) and study their molecular nanostructures both in bulk, in solution, and at the liquid-solid interface. Via an iterative synthesis method, multiple NDI cores were bridged with short and saturated alkyl-diamines (C3 and C12 ) or long and unsaturated alkyl-diamines (u2 C33 to u8 C100 ) at their imide termini. The strong intermolecular interaction between the NDI cores was observed by probing their photophysical properties in solution. In bulk, the discrete NDI oligomers preferentially ordered in lamellar morphologies, irrespective of whether a saturated or unsaturated spacer was employed. Moreover, both the molecular architecture as well as the crystallization conditions play a significant role in the nanoscale ordering. The long unsaturated alkyl chains lead preferably to folded-chain conformations while their saturated analogues form stretched arrangements. At the solution-solid interface, well-defined lamellar regions were observed. These results show that precision in chemical structure alone is not sufficient to reach well-defined structures of discrete oligomers, but that it must be combined with precision in processing conditions.
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Affiliation(s)
- Christiaan H W A Corbet
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Bart W L van den Bersselaar
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Bas F M de Waal
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Robby Reynaerts
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Kunal S Mali
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain-UCLouvain, Ottignies-Louvain-la-Neuve, Louvain-la-Neuve, B-1348, Belgium
| | - E W Meijer
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- School of Chemistry and RNA Institute, University of New South Wales, Sydney, Australia
| | - Ghislaine Vantomme
- Institute for Complex Molecular Systems and Laboratory of Macromolecular and Organic Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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17
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Tino MP, Suderman R, Abukhdeir NM. Shapelet-based orientation and defect identification method for nanostructured surface imaging. Nanotechnology 2024; 35:165705. [PMID: 38215480 DOI: 10.1088/1361-6528/ad1df4] [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] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 01/12/2024] [Indexed: 01/14/2024]
Abstract
Structure-property relations are of fundamental importance for continued progress in materials research. Determining these relationships for nanomaterials introduces additional challenges, especially when nanostructure is present, either through self-assembly or nano-lithographic processes. Recent advances have been made for quantification of nanostructured surfaces, for which many robust experimental imaging methods exist. One promising approach is based on the use ofshapelet functionsfor image analysis, which may be used as a reduced basis for surface pattern structure resulting from a broad range of phenomena (e.g. self-assembly). These shapelet-based methods enable automated quantification of nanostructured images, guided by the user/researcher, providing pixel-level information of local order without requiring detailed knowledge of order symmetries. In this work, enhancements to the existing shapelet-basedresponse distance methodare developed which enable further analysis of local order, including quantification oflocal orientationand identification oftopological defects. The presented shapelet-based methods are applied to a representative set of images of self-assembled surfaces from experimental characterization techniques including scanning electron microscopy, atomic force microscopy, and transmission electron microscopy. These methods are shown to be complementary in implementation and, importantly, provide researchers with a robust and generalized computational approach to comprehensively quantify nanostructure order, including local orientation and boundaries within well-aligned grains.
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Affiliation(s)
- Matthew Peres Tino
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Robert Suderman
- Google Research, 1600 Amphitheatre Parkway, Mountain View, CA, United States of America
| | - Nasser Mohieddin Abukhdeir
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada
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18
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Zhang Y, Wang Y, Yan K, Li H, Zhang X, Essola JM, Ding C, Chang K, Qing G, Zhang F, Tan Y, Peng T, Wang X, Jiang M, Liang X, Hua Q. Traditional Chinese Medicine Formulae QY305 Reducing Cutaneous Adverse Reaction and Diarrhea by its Nanostructure. Adv Sci (Weinh) 2024; 11:e2306140. [PMID: 38044276 PMCID: PMC10837375 DOI: 10.1002/advs.202306140] [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] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/08/2023] [Indexed: 12/05/2023]
Abstract
Traditional Chinese medicine (TCM) is widely used in clinical practice, including skin and gastrointestinal diseases. Here, a potential TCM QY305 (T-QY305) is reported that can modulate the recruitment of neutrophil in skin and colon tissue thus reducing cutaneous adverse reaction and diarrhea induced by epidermal growth factor receptor inhibitors (EGFRIs). On another hand, the T-QY305 formula, through regulating neutrophil recruitment features would highlight the presence of N-QY305, a subunit nanostructure contained in T-QY305, and confirm its role as potentially being the biomaterial conferring to T-QY305 its pharmacodynamic features. Here, the clinical records of two patients are analyzed expressing cutaneous adverse reaction and demonstrate positive effect of T-QY305 on the simultaneous inhibition of both cutaneous adverse reaction and diarrhea in animal models. The satisfying results obtained from T-QY305, lead to further process to the isolation of N-QY305 from T-QY305, in order to demonstrate that the potency of T-QY305 originates from the nanostructure N-QY305. Compared to T-QY305, N-QY305 exhibits higher potency upon reducing adverse reactions. The data represent a promising candidate for reducing cutaneous adverse reaction and diarrhea, meanwhile proposing a new strategy to highlight the presence of nanostructures being the "King" of Chinese medicine formula as the pharmacodynamic basis.
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Affiliation(s)
- Ya‐Li Zhang
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
- CAS Center for Excellence in NanoscienceCAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyChinese Academy of Sciences and National Center for Nanoscience and Technology of ChinaBeijing100190China
| | - Ya‐Lei Wang
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Ke Yan
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Haiyan Li
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Xinyu Zhang
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Julien Milon Essola
- CAS Center for Excellence in NanoscienceCAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyChinese Academy of Sciences and National Center for Nanoscience and Technology of ChinaBeijing100190China
| | - Chengcheng Ding
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Kexin Chang
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Guangchao Qing
- CAS Center for Excellence in NanoscienceCAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyChinese Academy of Sciences and National Center for Nanoscience and Technology of ChinaBeijing100190China
| | - Fuxue Zhang
- CAS Center for Excellence in NanoscienceCAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyChinese Academy of Sciences and National Center for Nanoscience and Technology of ChinaBeijing100190China
| | - Yan Tan
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Tiantian Peng
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Xu Wang
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Miao Jiang
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
| | - Xing‐Jie Liang
- CAS Center for Excellence in NanoscienceCAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyChinese Academy of Sciences and National Center for Nanoscience and Technology of ChinaBeijing100190China
| | - Qian Hua
- School of Life SciencesSchool of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijing102488China
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19
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Ma C, Wang L, Xu Z, Tong W, Zheng Q. Uniform and Persistent Jumping Detachment of Condensed Nanodroplets. Nano Lett 2024; 24:1439-1446. [PMID: 38237068 DOI: 10.1021/acs.nanolett.3c04930] [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] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Realizing jumping detachment of condensed droplets from solid surfaces at the smallest sizes possible is vital for applications such as antifogging/frosting and heat transfer. For instance, if droplets uniformly jump at sizes smaller than visible light wavelengths of 400-720 nm, antifogging issues could be resolved. In comparison, the smallest droplets experimentally observed so far to jump uniformly were around 16 μm in radius. Here, we show molecular dynamics (MD) simulations of persistent droplet jumping with a uniform radius down to only 3.6 nm on superhydrophobic thin-walled lattice (TWL) nanostructures integrated with superhydrophilic nanospots. The size cutoff is attributed to the preferential cross-lattice coalescence of island droplets. As an application, the MD results exhibit a 10× boost in the heat transfer coefficient (HTC), showing a -1 scaling law with the maximum droplet radius. We provide phase diagrams for jumping and wetting behaviors to guide the design of lattice structures with advanced antidew performance.
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Affiliation(s)
- Chen Ma
- Department of Engineering Mechanics, AML, Tsinghua University, Beijing 100084, China
- Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
| | - Lin Wang
- Department of Engineering Mechanics, AML, Tsinghua University, Beijing 100084, China
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
| | - Zhi Xu
- Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, China
| | - Wei Tong
- Department of Engineering Mechanics, AML, Tsinghua University, Beijing 100084, China
- Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
- Institute of Superlubricity Technology, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China
| | - Quanshui Zheng
- Department of Engineering Mechanics, AML, Tsinghua University, Beijing 100084, China
- Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, China
- Institute of Superlubricity Technology, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China
- Institute of Materials Research, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518057, China
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20
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Lechowski B, Kutukova K, Grenzer J, Panchenko I, Krueger P, Clausner A, Zschech E. Laboratory X-ray Microscopy of 3D Nanostructures in the Hard X-ray Regime Enabled by a Combination of Multilayer X-ray Optics. Nanomaterials (Basel) 2024; 14:233. [PMID: 38276751 PMCID: PMC10819039 DOI: 10.3390/nano14020233] [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] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024]
Abstract
High-resolution imaging of buried metal interconnect structures in advanced microelectronic products with full-field X-ray microscopy is demonstrated in the hard X-ray regime, i.e., at photon energies > 10 keV. The combination of two multilayer optics-a side-by-side Montel (or nested Kirkpatrick-Baez) condenser optic and a high aspect-ratio multilayer Laue lens-results in an asymmetric optical path in the transmission X-ray microscope. This optics arrangement allows the imaging of 3D nanostructures in opaque objects at a photon energy of 24.2 keV (In-Kα X-ray line). Using a Siemens star test pattern with a minimal feature size of 150 nm, it was proven that features < 150 nm can be resolved. In-Kα radiation is generated from a Ga-In alloy target using a laboratory X-ray source that employs the liquid-metal-jet technology. Since the penetration depth of X-rays into the samples is significantly larger compared to 8 keV photons used in state-of-the-art laboratory X-ray microscopes (Cu-Kα radiation), 3D-nanopattered materials and structures can be imaged nondestructively in mm to cm thick samples. This means that destructive de-processing, thinning or cross-sectioning of the samples are not needed for the visualization of interconnect structures in microelectronic products manufactured using advanced packaging technologies. The application of laboratory transmission X-ray microscopy in the hard X-ray regime is demonstrated for Cu/Cu6Sn5/Cu microbump interconnects fabricated using solid-liquid interdiffusion (SLID) bonding.
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Affiliation(s)
| | | | - Joerg Grenzer
- deepXscan GmbH, Zeppelinstr. 1, 01324 Dresden, Germany
| | - Iuliana Panchenko
- Institute of Electronic Packaging Technology, Technische Universität Dresden, Helmholtzstr. 10, 01069 Dresden, Germany
- Fraunhofer Institute for Reliability and Microintegration, All Silicon System Integration Dresden, Ringstr. 12, 01468 Moritzburg, Germany
| | - Peter Krueger
- Fraunhofer Institute for Ceramic Technologies and Systems, Maria-Reiche-Str. 5, 01099 Dresden, Germany
| | - Andre Clausner
- Fraunhofer Institute for Ceramic Technologies and Systems, Maria-Reiche-Str. 5, 01099 Dresden, Germany
| | - Ehrenfried Zschech
- deepXscan GmbH, Zeppelinstr. 1, 01324 Dresden, Germany
- Research Area Nanomaterials, Brandenburg University of Technology Cottbus-Senftenberg, Konrad-Zuse-Str. 1, 03046 Cottbus, Germany
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21
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Huang LZY, Shaw ZL, Penman R, Cheeseman S, Truong VK, Higgins MJ, Caruso RA, Elbourne A. Cell Adhesion, Elasticity, and Rupture Forces Guide Microbial Cell Death on Nanostructured Antimicrobial Titanium Surfaces. ACS Appl Bio Mater 2024; 7:344-361. [PMID: 38100088 DOI: 10.1021/acsabm.3c00943] [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] [Indexed: 01/16/2024]
Abstract
Naturally occurring and synthetic nanostructured surfaces have been widely reported to resist microbial colonization. The majority of these studies have shown that both bacterial and fungal cells are killed upon contact and subsequent surface adhesion to such surfaces. This occurs because the presence of high-aspect-ratio structures can initiate a self-driven mechanical rupture of microbial cells during the surface adsorption process. While this technology has received a large amount of scientific and medical interest, one important question still remains: what factors drive microbial death on the surface? In this work, the interplay between microbial-surface adhesion, cell elasticity, cell membrane rupture forces, and cell lysis at the microbial-nanostructure biointerface during adsorptive processes was assessed using a combination of live confocal laser scanning microscopy, scanning electron microscopy, in situ amplitude atomic force microscopy, and single-cell force spectroscopy. Specifically, the adsorptive behavior and nanomechanical properties of live Gram-negative (Pseudomonas aeruginosa) and Gram-positive (methicillin-resistant Staphylococcus aureus) bacterial cells, as well as the fungal species Candida albicans and Cryptococcus neoformans, were assessed on unmodified and nanostructured titanium surfaces. Unmodified titanium and titanium surfaces with nanostructures were used as model substrates for investigation. For all microbial species, cell elasticity, rupture force, maximum cell-surface adhesion force, the work of adhesion, and the cell-surface tether behavior were compared to the relative cell death observed for each surface examined. For cells with a lower elastic modulus, lower force to rupture through the cell, and higher work of adhesion, the surfaces had a higher antimicrobial activity, supporting the proposed biocidal mode of action for nanostructured surfaces. This study provides direct quantification of the differences observed in the efficacy of nanostructured antimicrobial surface as a function of microbial species indicating that a universal, antimicrobial surface architecture may be hard to achieve.
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Affiliation(s)
- Louisa Z Y Huang
- Applied Chemistry and Environmental Science, School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Z L Shaw
- School of Engineering, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Rowan Penman
- Applied Chemistry and Environmental Science, School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Samuel Cheeseman
- Applied Chemistry and Environmental Science, School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
- Graeme Clark Institute, Faculty of Engineering and Information Technology & Faculty of Medicine, Dentistry and Health Services, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Vi Khanh Truong
- Applied Chemistry and Environmental Science, School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
- College of Medicine and Public Health, Flinders University, Bedford Park, South Australia 5042, Australia
| | - Michael J Higgins
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Rachel A Caruso
- Applied Chemistry and Environmental Science, School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
| | - Aaron Elbourne
- Applied Chemistry and Environmental Science, School of Science, College of STEM, RMIT University, Melbourne, Victoria 3000, Australia
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22
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Chen LH, Hu JN. Development of nano-delivery systems for loaded bioactive compounds: using molecular dynamics simulations. Crit Rev Food Sci Nutr 2024:1-22. [PMID: 38206576 DOI: 10.1080/10408398.2023.2301427] [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] [Indexed: 01/12/2024]
Abstract
Over the past decade, a remarkable surge in the development of functional nano-delivery systems loaded with bioactive compounds for healthcare has been witnessed. Notably, the demanding requirements of high solubility, prolonged circulation, high tissue penetration capability, and strong targeting ability of nanocarriers have posed interdisciplinary research challenges to the community. While extensive experimental studies have been conducted to understand the construction of nano-delivery systems and their metabolic behavior in vivo, less is known about these molecular mechanisms and kinetic pathways during their metabolic process in vivo, and lacking effective means for high-throughput screening. Molecular dynamics (MD) simulation techniques provide a reliable tool for investigating the design of nano-delivery carriers encapsulating these functional ingredients, elucidating the synthesis, translocation, and delivery of nanocarriers. This review introduces the basic MD principles, discusses how to apply MD simulation to design nanocarriers, evaluates the ability of nanocarriers to adhere to or cross gastrointestinal mucosa, and regulates plasma proteins in vivo. Moreover, we presented the critical role of MD simulation in developing delivery systems for precise nutrition and prospects for the future. This review aims to provide insights into the implications of MD simulation techniques for designing and optimizing nano-delivery systems in the healthcare food industry.
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Affiliation(s)
- Li-Hang Chen
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian, China
| | - Jiang-Ning Hu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian, China
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23
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Saurav S, Sharma P, Kumar A, Tabassum Z, Girdhar M, Mamidi N, Mohan A. Harnessing Natural Polymers for Nano-Scaffolds in Bone Tissue Engineering: A Comprehensive Overview of Bone Disease Treatment. Curr Issues Mol Biol 2024; 46:585-611. [PMID: 38248340 PMCID: PMC10814241 DOI: 10.3390/cimb46010038] [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: 11/26/2023] [Revised: 12/24/2023] [Accepted: 12/30/2023] [Indexed: 01/23/2024] Open
Abstract
Numerous surgeries are carried out to replace tissues that have been harmed by an illness or an accident. Due to various surgical interventions and the requirement of bone substitutes, the emerging field of bone tissue engineering attempts to repair damaged tissues with the help of scaffolds. These scaffolds act as template for bone regeneration by controlling the development of new cells. For the creation of functional tissues and organs, there are three elements of bone tissue engineering that play very crucial role: cells, signals and scaffolds. For the achievement of these aims, various types of natural polymers, like chitosan, chitin, cellulose, albumin and silk fibroin, have been used for the preparation of scaffolds. Scaffolds produced from natural polymers have many advantages: they are less immunogenic as well as being biodegradable, biocompatible, non-toxic and cost effective. The hierarchal structure of bone, from microscale to nanoscale, is mostly made up of organic and inorganic components like nanohydroxyapatite and collagen components. This review paper summarizes the knowledge and updates the information about the use of natural polymers for the preparation of scaffolds, with their application in recent research trends and development in the area of bone tissue engineering (BTE). The article extensively explores the related research to analyze the advancement of nanotechnology for the treatment of bone-related diseases and bone repair.
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Affiliation(s)
- Sushmita Saurav
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
| | - Prashish Sharma
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
| | - Anil Kumar
- Gene Regulation Laboratory, National Institute of Immunology, New Delhi 110067, Delhi, India;
| | - Zeba Tabassum
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
| | - Madhuri Girdhar
- Division of Research and Development, Lovely Professional University, Phagwara 144401, Punjab, India;
| | - Narsimha Mamidi
- Wisconsin Centre for Nano Biosystems, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Anand Mohan
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144401, Punjab, India; (S.S.); (P.S.); (Z.T.)
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24
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Manna G, Zinn T, Sharpnack L, Narayanan T. Orientational ordering and assembly of silica-nickel Janus particles in a magnetic field. IUCrJ 2024; 11:109-119. [PMID: 38099813 PMCID: PMC10833383 DOI: 10.1107/s205225252301000x] [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] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 11/16/2023] [Indexed: 01/10/2024]
Abstract
The orientation ordering and assembly behavior of silica-nickel Janus particles in a static external magnetic field were probed by ultra small-angle X-ray scattering (USAXS). Even in a weak applied field, the net magnetic moments of the individual particles aligned in the direction of the field, as indicated by the anisotropy in the recorded USAXS patterns. X-ray photon correlation spectroscopy (XPCS) measurements on these suspensions revealed that the corresponding particle dynamics are primarily Brownian diffusion [Zinn, Sharpnack & Narayanan (2023). Soft Matter, 19, 2311-2318]. At higher fields, the magnetic forces led to chain-like configurations of particles, as indicated by an additional feature in the USAXS pattern. A theoretical framework is provided for the quantitative interpretation of the observed anisotropic scattering diagrams and the corresponding degree of orientation. No anisotropy was detected when the magnetic field was applied along the beam direction, which is also replicated by the model. The method presented here could be useful for the interpretation of oriented scattering patterns from a wide variety of particulate systems. The combination of USAXS and XPCS is a powerful approach for investigating asymmetric colloidal particles in external fields.
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Affiliation(s)
| | - Thomas Zinn
- ESRF – The European Synchrotron, 38043 Grenoble, France
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25
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Han X, Dong L, Zhang W, Liang C, Wang Z. Adhesion measurement of living cells based on electrical impedance. Technol Health Care 2024; 32:573-583. [PMID: 37393445 DOI: 10.3233/thc-220584] [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] [Indexed: 07/03/2023]
Abstract
BACKGROUND Cells adherence provides specific information about physiology and pathology, the adhesion measurement between living cells and nanostructures can be measured by atomic force microscopy, but this detection technique is difficult to operate and costly. The adhesion height and effective contact area between cells and substrates are also the key factors affecting measurement value of the overall impedance. These factors change with structural parameters of the substrates, so the adhesion measurement between living cells and substrate can be indirectly reflected by the impedance value. OBJECTIVE To establish a mapping relationship between the impedance measurement and the adhesion measurement of living cells. The possibility of dynamic measurement of adhesion is realized by this method, and the experimental process is simplified. METHODS Laser interference technology was used to prepare nanoarray structures with different periods on the surface of silicon wafers for cells culture. Under the same experimental conditions, the impedance of living cells on the substrates of different cycle sizes were measured. The adhesion between cells and different substrates were analyzed by measuring impedance after the interaction between cells and substrate. RESULTS The adhesion of living cells on the substrates of different sizes be analyzed, and the mapping relationship between the impedance and the adhesion measurement was established. The results showed that, the larger the impedance value between cells and substrate, the larger the effective contact area and the smaller the gap between them. CONCLUSION The difference of adhesion height and effective adhesion area between living cells and substrates were obtained. This paper, a new method to measure the adhesion properties of living cells is presented, which provides theoretical basis for the related research.
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Affiliation(s)
- Xueyan Han
- International Research Centre for Nano Handling and Manufacturing of China (CNM), Changchun University of Science and Technology, Changchun, Jilin, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, Jilin, China
| | - Litong Dong
- International Research Centre for Nano Handling and Manufacturing of China (CNM), Changchun University of Science and Technology, Changchun, Jilin, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, Jilin, China
| | - Wenxiao Zhang
- International Research Centre for Nano Handling and Manufacturing of China (CNM), Changchun University of Science and Technology, Changchun, Jilin, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, Jilin, China
| | - Chun Liang
- International Research Centre for Nano Handling and Manufacturing of China (CNM), Changchun University of Science and Technology, Changchun, Jilin, China
| | - Zuobin Wang
- International Research Centre for Nano Handling and Manufacturing of China (CNM), Changchun University of Science and Technology, Changchun, Jilin, China
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, Jilin, China
- Zhongshan Institute of Changchun University of Science and Technology, Zhongshan, Guangdong, China
- IRAC & JR3CN, University of Bedfordshire, Luton, UK
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26
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Dang Z, Ma X, Yang Z, Wen X, Zhao P. Electrospun Nanofiber Scaffolds Loaded with Metal-Based Nanoparticles for Wound Healing. Polymers (Basel) 2023; 16:24. [PMID: 38201687 PMCID: PMC10780332 DOI: 10.3390/polym16010024] [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: 12/01/2023] [Revised: 12/15/2023] [Accepted: 12/16/2023] [Indexed: 01/12/2024] Open
Abstract
Failures of wound healing have been a focus of research worldwide. With the continuous development of materials science, electrospun nanofiber scaffolds loaded with metal-based nanoparticles provide new ideas and methods for research into new tissue engineering materials due to their excellent antibacterial, anti-inflammatory, and wound healing abilities. In this review, the stages of extracellular matrix and wound healing, electrospun nanofiber scaffolds, metal-based nanoparticles, and metal-based nanoparticles supported by electrospun nanofiber scaffolds are reviewed, and their characteristics and applications are introduced. We discuss in detail the current research on wound healing of metal-based nanoparticles and electrospun nanofiber scaffolds loaded with metal-based nanoparticles, and we highlight the potential mechanisms and promising applications of these scaffolds for promoting wound healing.
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Affiliation(s)
| | | | | | | | - Pengxiang Zhao
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China; (Z.D.); (X.M.); (Z.Y.); (X.W.)
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27
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Torres VM, Furton E, Sevening JN, Lloyd EC, Fukuto M, Li R, Pagan DC, Beese AM, Vogt BD, Hickey RJ. Revealing Deformation Mechanisms in Polymer-Grafted Thermoplastic Elastomers via In Situ Small-Angle X-ray Scattering. ACS Appl Mater Interfaces 2023; 15:57941-57949. [PMID: 37816032 DOI: 10.1021/acsami.3c09445] [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] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
The tunable properties of thermoplastic elastomers (TPEs), through polymer chemistry manipulations, enable these technologically critical materials to be employed in a broad range of applications. The need to "dial-in" the mechanical properties and responses of TPEs generally requires the design and synthesis of new macromolecules. In these designs, TPEs with nonlinear macromolecular architectures outperform the mechanical properties of their linear copolymer counterparts, but the differences in the deformation mechanism providing enhanced performance are unknown. Here, in situ small-angle X-ray scattering (SAXS) measurements during uniaxial extension reveal distinct deformation mechanisms between a commercially available linear poly(styrene)-poly(butadiene)-poly(styrene) (SBS) triblock copolymer and the grafted SBS version containing grafted poly(styrene) (PS) chains from the poly(butadiene) (PBD) midblock. The neat SBS (φSBS = 100%) sample deforms congruently with the macroscopic dimensions, with the domain spacing between spheres increasing and decreasing along and transverse to the stretch direction, respectively. At high extensions, end segment pullout from the PS-rich domains is detected, which is indicated by a disordering of SBS. Conversely, the PS-grafted SBS that is 30 vol % SBS and 70% styrene (φSBS = 30%) exhibits a lamellar morphology, and in situ SAXS measurements reveal an unexpected deformation mechanism. During deformation, there are two simultaneous processes: significant lamellar domain rearrangement to preferentially orient the lamellae planes parallel to the stretch direction and crazing. The samples whiten at high strains as expected for crazing, which corresponds with the emergence of features in the 2D SAXS pattern during stretching consistent with fibril-like structures that bridge the voids in crazes. The significant domain rearrangement in the grafted copolymers is attributed to the new junctions formed across multiple PS domains by the grafting of a single chain. The in situ SAXS measurements provide insights into the enhanced mechanical properties of grafted copolymers that arise through improved physical cross-linking that leads to nanostructure domain reorientation for self-reinforcement and craze formation where fibrils help to strengthen the polymer.
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Affiliation(s)
- Vincent M Torres
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Erik Furton
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jensen N Sevening
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Elisabeth C Lloyd
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Masafumi Fukuto
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ruipeng Li
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Darren C Pagan
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Allison M Beese
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16801, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Bryan D Vogt
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Robert J Hickey
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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28
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Zaharioudakis K, Kollia E, Leontiou A, Moschovas D, Karydis-Messinis A, Avgeropoulos A, Zafeiropoulos NE, Ragkava E, Kehayias G, Proestos C, Salmas CE, Giannakas AE. Carvacrol Microemulsion vs. Nanoemulsion as Novel Pork Minced Meat Active Coatings. Nanomaterials (Basel) 2023; 13:3161. [PMID: 38133058 PMCID: PMC10745327 DOI: 10.3390/nano13243161] [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] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/07/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Carvacrol is well documented for its antibacterial and antioxidant effects. However, its high volatility has directed researchers toward nanoencapsulation technology according to bioeconomy and sustainability trends. This study examined and compared free carvacrol (FC), carvacrol microemulsion (MC), carvacrol microemulsion busted with chitosan (MMC), and carvacrol nanoemulsions (NC) as active coatings on extending minced pork meat shelf life at 4 ± 1 °C for 9 days, focusing on microbiological, physiochemical, and sensory characteristics. The research involved pre-characterizing droplet sizes, evaluating antioxidants, and determining antibacterial efficacy. The results demonstrated that NC with a 21 nm droplet size exhibited the highest antioxidant and antibacterial activity. All coatings succeeded in extending the preservation of fresh minced pork meat in comparison to the free carvacrol sample (FC). The NC coating showed the highest extension of minced pork meat preservation and maintained meat freshness for 9 days, with a lower TBARs of 0.736 mg MDA/Kg, and effectively reduced mesophilic, lactic acid, and psychotrophic bacterial counts more significantly by 1.2, 2, and 1.3 log, respectively, as compared to FC. Sensory assessments confirmed the acceptability of NC and MCC coatings. Overall, the carvacrol-based nanoemulsion can be considered a novel antioxidant and antimicrobial active coating due to its demonstrated higher efficacy in all the examined tests performed.
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Affiliation(s)
- Konstantinos Zaharioudakis
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (A.L.); (E.R.); (G.K.)
| | - Eleni Kollia
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (C.P.)
| | - Areti Leontiou
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (A.L.); (E.R.); (G.K.)
| | - Dimitrios Moschovas
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (A.K.-M.); (A.A.); (N.E.Z.)
| | - Andreas Karydis-Messinis
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (A.K.-M.); (A.A.); (N.E.Z.)
| | - Apostolos Avgeropoulos
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (A.K.-M.); (A.A.); (N.E.Z.)
| | - Nikolaos E. Zafeiropoulos
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (A.K.-M.); (A.A.); (N.E.Z.)
| | - Efthymia Ragkava
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (A.L.); (E.R.); (G.K.)
| | - George Kehayias
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (A.L.); (E.R.); (G.K.)
| | - Charalampos Proestos
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (C.P.)
| | - Constantinos E. Salmas
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece; (D.M.); (A.K.-M.); (A.A.); (N.E.Z.)
| | - Aris E. Giannakas
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (A.L.); (E.R.); (G.K.)
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29
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Chen Z, Canard G, Grauby O, Mourot B, Siri O. Breaking Azacalix[4]arenes into Induline Derivatives. Molecules 2023; 28:8113. [PMID: 38138597 PMCID: PMC10746034 DOI: 10.3390/molecules28248113] [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: 11/16/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Tetraamino-tetranitro-azacalixarene 5 is at the crossroad of two different families of compounds depending on the conditions and the agent used to reduce the NO2 groups: (1) azacalixphyrin 7 in neutral medium, or (2) phenazinium of type 8 in acidic medium. The key role of the N-substituted amino functions at the periphery is highlighted by investigating octaaminoazacalixarene as a model compound, and by using the corresponding tetrahydroxy-tetranitro-azacalixarene 15 as a precursor, which behaves differently.
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Affiliation(s)
| | | | | | | | - Olivier Siri
- Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), UMR 7325 CNRS Aix-Marseille Université, Campus de Luminy, Case 913, F-13288 Marseille, France; (Z.C.); (G.C.); (O.G.); (B.M.)
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30
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Tian Y, Li J, Wang A, Li Q, Jian H, Bai S. Peptide-Based Optical/Electronic Materials: Assembly and Recent Applications in Biomedicine, Sensing, and Energy Storage. Macromol Biosci 2023; 23:e2300171. [PMID: 37466295 DOI: 10.1002/mabi.202300171] [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: 04/21/2023] [Revised: 07/10/2023] [Accepted: 07/16/2023] [Indexed: 07/20/2023]
Abstract
The unique optical and electronic properties of living systems are impressive. Peptide-based supramolecular self-assembly systems attempt to mimic these properties by preparation optical/electronic function materials with specific structure through simple building blocks, rational molecular design, and specific kinetic stimulation. From the perspective of building blocks and assembly strategies, the unique optical and electronic properties of peptide-based nanostructures, including peptides self-assembly and peptides regulate the assembly of external function subunits, are systematically reviewed. Additionally, their applications in biomedicine, sensing, and energy storage are also highlighted. This bioinspired peptide-based function material is one of the hot candidates for the new generation of green intellect materials, with many advantages such as biocompatibility, environmental friendliness, and adjustable morphology.
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Affiliation(s)
- Yajie Tian
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jieling Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Anhe Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Qi Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Honglei Jian
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shuo Bai
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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31
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Li R, Liu H, Shi Q, Zhang G, Pang G, Xu Y, Song J, Lu Y. An ascorbic acid-decorated nanostructured surface on titanium inhibits breast cancer development and promotes osteogenesis. Biomed Mater 2023; 19:015006. [PMID: 38000084 DOI: 10.1088/1748-605x/ad0fa2] [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: 07/31/2023] [Accepted: 11/24/2023] [Indexed: 11/26/2023]
Abstract
The chest wall is the most frequent metastatic site of breast cancer (BC) and the metastasis usually occurs in a solitary setting. Chest wall resection is a way to treat solitary BC metastasis, but intraoperative bone defects and local tumor recurrence still affect the life quality of patients. Titanium-based prostheses are widely used for chest wall repair and reconstruction, but their inherent bio-inertness makes their clinical performance unfavorable. Nanostructured surfaces can give titanium substrates the ability to excellently modulate a variety of cellular functions. Ascorbic acid is a potential stimulator of tumor suppression and osteogenic differentiation. An ascorbic acid-decorated nanostructured titanium surface was prepared through alkali treatment and spin-coating technique and its effects on the biological responses of BC cells and osteoblasts were assessed. The results exhibited that the nanorod structure and ascorbic acid synergistically inhibited the proliferation, spreading, and migration of BC cells. Additionally, the ascorbic acid-decorated nanostructured surface significantly promoted the proliferation and osteogenic differentiation of osteoblasts. This work may provide valuable references for the clinical application of titanium materials in chest wall reconstruction after the resection of metastatic BC.
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Affiliation(s)
- Rong Li
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, People's Republic of China
| | - Hongyu Liu
- Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical University, Taiyuan 030013, People's Republic of China
| | - Qinying Shi
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, People's Republic of China
| | - Guannan Zhang
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, People's Republic of China
- Shanxi Provincial Key Laboratory for Translational Nuclear Medicine and Precision Protection, Taiyuan 030006, People's Republic of China
| | - Guobao Pang
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, People's Republic of China
| | - Yannan Xu
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, People's Republic of China
| | - Jianbo Song
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, People's Republic of China
- Shanxi Provincial Key Laboratory for Translational Nuclear Medicine and Precision Protection, Taiyuan 030006, People's Republic of China
| | - Ying Lu
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, People's Republic of China
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32
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Park H, Hwang J, Lee J, Kang DJ. Rapid Electrohydrodynamic-Driven Pattern Replication over a Large Area via Ultrahigh Voltage Pulses. ACS Nano 2023; 17:22456-22466. [PMID: 37939012 DOI: 10.1021/acsnano.3c05413] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Despite the prospects of electrohydrodynamic instability patterning (EHIP), poor process parameter controllability is a significant challenge in uniform large-scale nanopatterning. Herein, we introduce a EHIP process using an ultrahigh electric field (>108 V/m) to effectively accelerate the pattern growth evolution. Owing to the strong dependence on a temporal parameter (1/τm) of the field strength, our method not only reduces the completion time of pattern growth but also overcomes critical parametric restrictions on the pattern replication, thereby enhancing the replicated pattern quality in three dimensions. The pattern can be uniformly replicated over the entire film surface even without a perfectly uniform air gap, which has been severely difficult in the conventional method. To further demonstrate how straightforward yet versatile our approach is, we applied our EHIP approach to successfully replicate the densely packed nanostructures of cicada wings.
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Affiliation(s)
- Hyunje Park
- Department of Physics, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Jaeseok Hwang
- Wonik IPS Semiconductor Research Center, 75, Jinwisandan-ro, Jinwi-myeon, Pyeongtaek-si, Gyeonggi-do 17709, Republic of Korea
| | - Jaejong Lee
- Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea
| | - Dae Joon Kang
- Department of Physics, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
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33
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Liu Q, Lin YC, Kretschmer S, Ghorbani-Asl M, Solís-Fernández P, Siao MD, Chiu PW, Ago H, Krasheninnikov AV, Suenaga K. Molybdenum Chloride Nanostructures with Giant Lattice Distortions Intercalated into Bilayer Graphene. ACS Nano 2023. [PMID: 38007700 DOI: 10.1021/acsnano.3c06958] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
The nanospace of the van der Waals (vdW) gap between structural units of two-dimensional (2D) materials serves as a platform for growing unusual 2D systems through intercalation and studying their properties. Various kinds of metal chlorides have previously been intercalated for tuning the properties of host layered materials, but the atomic structure of the intercalants remains still unidentified. In this study, we investigate the atomic structural transformation of molybdenum(V) chloride (MoCl5) after intercalation into bilayer graphene (BLG). Using scanning transmission electron microscopy, we found that the intercalated material represents MoCl3 networks, MoCl2 chains, and Mo5Cl10 rings. Giant lattice distortions and frequent structural transitions occur in the 2D MoClx that have never been observed in metal chloride systems. The trend of symmetric to nonsymmetric structural transformations can cause additional charge transfer from BLG to the intercalated MoClx, as suggested by our density functional theory calculations. Our study deepens the understanding of the behavior of matter in the confined space of the vdW gap in BLG and provides hints at a more efficient tuning of material properties by intercalation for potential applications, including transparent conductive films, optoelectronics, and energy storage.
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Affiliation(s)
- Qiunan Liu
- The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University, Osaka 567-0047, Japan
| | - Yung-Chang Lin
- The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University, Osaka 567-0047, Japan
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
| | - Silvan Kretschmer
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Mahdi Ghorbani-Asl
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | | | - Ming-Deng Siao
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Po-Wen Chiu
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Hiroki Ago
- Global Innovation Center (GIC), Kyushu University, Fukuoka 816-8580, Japan
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
| | - Arkady V Krasheninnikov
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Department of Applied Physics, Aalto University, P.O. Box 11100, 00076 Aalto, Finland
| | - Kazu Suenaga
- The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University, Osaka 567-0047, Japan
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
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Waldmann B, Hassler MFT, Müllner ARM, Puchegger S, Peterlik H. Strain and Strain Recovery of Human Hair from the Nano- to the Macroscale. Life (Basel) 2023; 13:2246. [PMID: 38137847 PMCID: PMC10744986 DOI: 10.3390/life13122246] [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: 10/08/2023] [Revised: 11/07/2023] [Accepted: 11/14/2023] [Indexed: 12/24/2023] Open
Abstract
In this study, in operandi SAXS experiments were conducted on samples of human hair with a varying degree of strain (2% within the elastic region and 10% beyond). Four different features in the SAXS patterns were evaluated: The intermediate filament distance perpendicular to and the distance from the meridional arc in the load direction, as well as the distances of the lipid bilayer peak in and perpendicular to the load direction. From the literature, one concludes that polar lipids in the cuticle are the origin of the lipid peak in the SAXS pattern, and this study shows that the observed strain in the lipids is much lower than in the intermediate filaments. We support these findings with SEM micrographs, which show that the scales in the cuticle deform much less than the cortex. The observed deformation of the intermediate filaments is very high, about 70% of the macrostrain, and the ratio of the transverse strain to the longitudinal strain at the nanoscale gives a Poisson ratio of νnano = 0.44, which is typical for soft matter. This work also finds that by varying the time period between two strain cycles, the typical strain recovery time is about 1000 min, i.e., one day. After this period, the structure is nearly identical to the initial structure, which suggests an interpretation that this is the typical time for the self-healing of hair after mechanical treatment.
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Affiliation(s)
- Brigitte Waldmann
- Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria; (B.W.); (M.F.T.H.); (A.R.M.M.); (S.P.)
| | - Martin F. T. Hassler
- Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria; (B.W.); (M.F.T.H.); (A.R.M.M.); (S.P.)
- Vienna Doctoral School in Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria
| | - Alexander R. M. Müllner
- Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria; (B.W.); (M.F.T.H.); (A.R.M.M.); (S.P.)
- Vienna Doctoral School in Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria
| | - Stephan Puchegger
- Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria; (B.W.); (M.F.T.H.); (A.R.M.M.); (S.P.)
| | - Herwig Peterlik
- Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria; (B.W.); (M.F.T.H.); (A.R.M.M.); (S.P.)
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Zaara K, Optasanu V, Le Gallet S, Escoda L, Saurina J, Bernard F, Khitouni M, Suñol JJ, Chemingui M. Study of Structural, Compression, and Soft Magnetic Properties of Fe 65Ni 28Mn 7 Alloy Prepared by Arc Melting, Mechanical Alloying, and Spark Plasma Sintering. Materials (Basel) 2023; 16:7244. [PMID: 38005172 PMCID: PMC10672919 DOI: 10.3390/ma16227244] [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] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023]
Abstract
Soft magnetic Fe65Ni28Mn7 (at. %) alloy was successfully synthesized by mechanical alloying and spark plasma sintering (SPS) and, in parallel, the same composition was prepared by arc melting (AM) for comparison. Several SPS conditions were tested. X-ray diffraction and scanning electron microscopy were used to investigate the structure, phase composition, and morphology of the samples. It was found that mechanical alloying produced BCC and FCC supersaturated solid solution after 130 h of milling, with a fine microstructure (i.e., crystallite size of 10 nm). Spark plasma sintering performed at 750 °C and 1000 °C under two pressures of 50 MPa and 75 MPa revealed stable FCC phases. A single FCC phase was observed after the arc melting synthesis. The magnetic properties of milled powders and solids obtained by AM and SPS were investigated. The specimen consolidated by SPS at 1000 °C under the pressure of 50 MPa exhibits soft magnetic behavior (coercivity 0.07 Oe), whereas the mechanically alloyed sample revealed hard magnetic behavior. The specimen consolidated at 750 °C under a pressure of 75 MPa showed a higher compressive strength of 1700 MPa and a Vickers hardness of 425 ± 18 HV. As a result, sintering at 750 °C/75 MPa can be utilized to enhance the mechanical properties, while those sintered at 1000 °C/50 MPa increase magnetic softness.
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Affiliation(s)
- Kaouther Zaara
- Department of Physics, University of Girona, Campus Montilivi, 17071 Girona, Spain; (K.Z.); (L.E.); (J.S.)
| | - Virgil Optasanu
- Laboratoire Interdisciplinaire Carnot de Bourgogne—ICB UMR 6303 CNRS, Université de Bourgogne, BP 47870, CEDEX, 21078 Dijon, France; (V.O.); (S.L.G.); (F.B.)
| | - Sophie Le Gallet
- Laboratoire Interdisciplinaire Carnot de Bourgogne—ICB UMR 6303 CNRS, Université de Bourgogne, BP 47870, CEDEX, 21078 Dijon, France; (V.O.); (S.L.G.); (F.B.)
| | - Lluisa Escoda
- Department of Physics, University of Girona, Campus Montilivi, 17071 Girona, Spain; (K.Z.); (L.E.); (J.S.)
| | - Joan Saurina
- Department of Physics, University of Girona, Campus Montilivi, 17071 Girona, Spain; (K.Z.); (L.E.); (J.S.)
| | - Frédéric Bernard
- Laboratoire Interdisciplinaire Carnot de Bourgogne—ICB UMR 6303 CNRS, Université de Bourgogne, BP 47870, CEDEX, 21078 Dijon, France; (V.O.); (S.L.G.); (F.B.)
| | - Mohamed Khitouni
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
| | - Joan-Josep Suñol
- Department of Physics, University of Girona, Campus Montilivi, 17071 Girona, Spain; (K.Z.); (L.E.); (J.S.)
| | - Mahmoud Chemingui
- Laboratory of Inorganic Chemistry, LR 17-ES-07, University of Sfax, B.P. 1171, Sfax 3018, Tunisia;
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Wary RR, Narzary M, Brahma BB, Brahma D, Kalita P, Buzar Baruah M. Nanostructural Design of ZnO Using an Agro-Waste Extract for a Sustainable Process and Its Photocatalytic Activity. ACS Appl Bio Mater 2023; 6:4645-4661. [PMID: 37938913 DOI: 10.1021/acsabm.3c00412] [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] [Indexed: 11/10/2023]
Abstract
The use of agro-waste extracts (AWEs) as a sustainable medium for developing cost-effective and ecologically friendly nanomaterials has piqued the interest of current researchers. Herein, waste extracts from papaya barks, banana peels, thumba plants, and snail shells were used for synthesizing ZnO nanostructures via a hydrothermal method, followed by calcination at 400 °C. The crystallinity and pure wurtzite phase formation of ZnO nanostructures were confirmed via X-ray diffraction. ZnO nanostructures with various morphologies such as tight sheet-like, spherical, porous sheet-like, and bracket-shaped, comprising small interconnected particles with a highly catalytically active exposed (0001) facet, were observed via field emission scanning electron microscopy and transmission electron microscopy. The formation mechanism of the various morphologies of the ZnO nanostructures was proposed. Ultraviolet-visible spectra showed different absorption band edges of ZnO nanostructures with a bandgap in the range of 3.17-3.27 eV. Photoluminescence studies showed the presence of various defect states such as oxygen and zinc vacancies and oxygen and zinc interstitials on ZnO nanostructures, which are usually observed in traditionally prepared ZnO. The photocatalytic activity of ZnO nanostructures was evaluated under direct sunlight using rhodamine B (RhB) and Congo red (CR) dyes as probe pollutants. Furthermore, prepared ZnO nanostructures could potentially adsorb anionic dyes (e.g., CR) in the absence of light. Superoxide and hydroxide radicals played a vital role in the photocatalytic activity of ZnO. The photocatalyst could be reused for up to three cycles, indicating its stability. Therefore, this study reports the diverse use of AWEs as cost-effective media for nanomaterial synthesis.
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Affiliation(s)
- Riu Riu Wary
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Mousumi Narzary
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Bidhu Bhusan Brahma
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Dulu Brahma
- Department of Chemistry, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Pranjal Kalita
- Department of Chemistry, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Manasi Buzar Baruah
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
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Ruffino R, Jankowski M, Konovalov O, Punzo F, Tuccitto N, Li-Destri G. Modulating Polymer Ultrathin Film Crystalline Fraction and Orientation with Nanoscale Curvature. Polymers (Basel) 2023; 15:4453. [PMID: 38006177 PMCID: PMC10674544 DOI: 10.3390/polym15224453] [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: 10/31/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
We investigated the effect of nanoscale curvature on the structure of thermally equilibrated poly-3-hexylthiophene (P3HT) ultrathin films. The curvature-induced effects were investigated with synchrotron grazing incidence X-ray diffraction (GIXRD) and atomic force microscopy (AFM). Our results demonstrate that nanoscale curvature reduces the polymer crystalline fraction and the crystal length. The first effect is strongest for the lowest curvature and results in a decrease in the out-of-plane thickness of the polymer crystals. On the other hand, the crystal in-plane length decreases with the increase in substrate curvature. Finally, the semi-quantitative analysis of crystal anisotropy shows a marked dependence on the substrate curvature characterized by a minimum at curvatures between 0.00851 nm-1 and 0.0140 nm-1. The results are discussed in terms of a curvature-dependent polymer fraction, which fills the interstices between neighboring particles and cannot crystallize due to extreme space confinement. This fraction, whose thickness is highest at the lowest curvatures, inhibits the crystal nucleation and the out-of-plane crystal growth. Moreover, because of the adhesion to the curved portion of the substrates, crystals adopt a random orientation. By increasing the substrate curvature, the amorphous fraction is reduced, leading to polymer films with higher crystallinity. Finally, when the thickness of the film exceeds the particle diameter, the curvature no longer affects the crystal orientation, which, similarly to the flat case, is predominantly edge on.
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Affiliation(s)
- Roberta Ruffino
- Department of Chemical Sciences and Center for Colloid and Surface Science (CSGI), University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (R.R.); (N.T.)
| | - Maciej Jankowski
- European Synchrotron Radiation Facility (ESRF), 71 Avenue des Martyrs, CS40220, CEDEX 9, 38043 Grenoble, France; (M.J.); (O.K.)
| | - Oleg Konovalov
- European Synchrotron Radiation Facility (ESRF), 71 Avenue des Martyrs, CS40220, CEDEX 9, 38043 Grenoble, France; (M.J.); (O.K.)
| | - Francesco Punzo
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy;
| | - Nunzio Tuccitto
- Department of Chemical Sciences and Center for Colloid and Surface Science (CSGI), University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (R.R.); (N.T.)
| | - Giovanni Li-Destri
- Department of Chemical Sciences and Center for Colloid and Surface Science (CSGI), University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (R.R.); (N.T.)
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38
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Araiza-Campos A, Herrera-Pérez G, Salas-Leiva JS, Chávez-Beltrán de Río M, Aguirre-Hernández A, Luna-Velasco A, Salas-Leiva D, Campos-Chávez E, Tovar-Ramírez D, Romo-Chacón A, Orrantia-Borunda E, Paraguay-Delgado F. Quasi-Diamond Platelet-Shaped Zinc Oxide Nanostructures Display Enhanced Antibacterial Activity. Chembiochem 2023; 24:e202300542. [PMID: 37743259 DOI: 10.1002/cbic.202300542] [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] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
The current study compares the antibacterial activity of zinc oxide nanostructures (neZnO). For this purpose, two bacterial strains, Escherichia coli (ATCC 4157) and Staphylococcus aureus (ATCC 29213) were challenged in room light conditions with the aforementioned materials. Colloidal and hydrothermal methods were used to obtain the quasi-round and quasi-diamond platelet-shape nanostructures. Thus, the oxygen vacancy (VO ) effects on the surface of neZnO are also considered to assess its effects on antibacterial activity. The neZnO characterization was achieved by X-ray diffraction (XRD), a selected area electron diffraction (SAED) and Raman spectroscopy. The microstructural effects were monitored by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Furthermore, optical absorption ultraviolet visible spectrophotometry (UV-Vis) and X-ray photoelectron spectroscopy (XPS) analyses complement the physical characterization of these nanostructures; neZnO caused 50 % inhibition (IC50 ) at concentrations from 0.064 to 0.072 mg/mL for S. aureus and from 0.083 to 0.104 mg/mL for E. coli, indicating an increase in activity against S. aureus compared to E. coli. Consequently, quasi-diamond platelet-shaped nanostructures (average particle size of 377.6±10 nm) showed enhanced antibacterial activity compared to quasi-round agglomerated particles (average size of 442.8±12 nm), regardless of Vo presence or absence.
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Affiliation(s)
- Aurora Araiza-Campos
- Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico
| | - Guillermo Herrera-Pérez
- CONAHCYT, Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico
| | - Joan S Salas-Leiva
- CONAHCYT, Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico
| | - Margarita Chávez-Beltrán de Río
- Ingeniería en Biotecnología, Instituto Tecnológico y de Estudios Superiores de Monterrey, Av. Heroico Colegio Militar 4700, Nombre de Dios., 31300, Chihuahua, México
| | - Alejandro Aguirre-Hernández
- Ingeniería en Biotecnología, Instituto Tecnológico y de Estudios Superiores de Monterrey, Av. Heroico Colegio Militar 4700, Nombre de Dios., 31300, Chihuahua, México
| | - Antonia Luna-Velasco
- Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico
| | - Dayana Salas-Leiva
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - Eduardo Campos-Chávez
- Department of Molecular Biosciences, Northwestern University, Evanston, IL, 60208, USA
| | - Dariel Tovar-Ramírez
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Instituto Politécnico Nacional s/n, Playa Palo de Santa Rita Sur, 23096, La Paz, B.C.S, Mexico
| | - Alejandro Romo-Chacón
- Centro de Investigación en Alimentación y Desarrollo, A.C., (CIAD) Campus Cuauhtémoc, Chihuahua, Avenida Rio Conchos S/N, Parque Industrial, 31570, Cuauhtémoc, Mexico
| | - Erasmo Orrantia-Borunda
- Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico
| | - Francisco Paraguay-Delgado
- Centro de Investigación en Materiales Avanzados S.C., (CIMAV), Miguel de Cervantes 120. Parque Industrial, 31136, Chihuahua, Mexico
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Wang J, Buzolic JJ, Mullen JW, Fitzgerald PA, Aman ZM, Forsyth M, Li H, Silvester DS, Warr GG, Atkin R. Nanostructure of Locally Concentrated Ionic Liquids in the Bulk and at Graphite and Gold Electrodes. ACS Nano 2023; 17:21567-21584. [PMID: 37883191 DOI: 10.1021/acsnano.3c06609] [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] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
The physical properties of ionic liquids (ILs) have led to intense research interest, but for many applications, high viscosity is problematic. Mixing the IL with a diluent that lowers viscosity offers a solution if the favorable IL physical properties are not compromised. Here we show that mixing an IL or IL electrolyte (ILE, an IL with dissolved metal ions) with a nonsolvating fluorous diluent produces a low viscosity mixture in which the local ion arrangements, and therefore key physical properties, are retained or enhanced. The locally concentrated ionic liquids (LCILs) examined are 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (HMIM TFSI), 1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate (HMIM FAP), or 1-butyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate (BMIM FAP) mixed with 1,1,2,2-tetrafluoroethyl 2,2,2-trifluoroethyl ether (TFTFE) at 2:1, 1:1, and 1:2 (w/w) IL:TFTFE, as well as the locally concentrated ILEs (LCILEs) formed from 2:1 (w/w) HMIM TFSI-TFTFE with 0.25, 0.5, and 0.75 m lithium bis(trifluoromethylsulfonyl)imide (LiTFSI). Rheology and conductivity measurements reveal that the added TFTFE significantly reduces viscosity and increases ionic conductivity, and cyclic voltammetry (CV) reveals minimal reductions in electrochemical windows on gold and carbon electrodes. This is explained by the small- and wide-angle X-ray scattering (S/WAXS) and atomic force microscopy (AFM) data, which show that the local ion nanostructures are largely retained in LCILs and LCILEs in bulk and at gold and graphite electrodes for all potentials investigated.
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Affiliation(s)
- Jianan Wang
- School of Molecular Sciences, The University of Western Australia, Perth 6009, Australia
| | - Joshua J Buzolic
- School of Molecular Sciences, The University of Western Australia, Perth 6009, Australia
| | - Jesse W Mullen
- School of Molecular and Life Sciences, Curtin University, Perth 6102, Australia
| | - Paul A Fitzgerald
- Sydney Analytical, Core Research Facilities, The University of Sydney, Sydney 2050, Australia
| | - Zachary M Aman
- Department of Chemical Engineering, The University of Western Australia, Perth 6009, Australia
| | - Maria Forsyth
- Institute for Frontier Materials and the ARC Centre of Excellence for Electromaterials Science, Deakin University, Geelong 3220, Australia
| | - Hua Li
- School of Molecular Sciences, The University of Western Australia, Perth 6009, Australia
- Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth 6009, Australia
| | - Debbie S Silvester
- School of Molecular and Life Sciences, Curtin University, Perth 6102, Australia
| | - Gregory G Warr
- School of Chemistry and Sydney Nano Institute, The University of Sydney, Sydney 2050, Australia
| | - Rob Atkin
- School of Molecular Sciences, The University of Western Australia, Perth 6009, Australia
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40
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Pantenburg I, Cronau M, Boll T, Duncker A, Roling B. Challenging Prevalent Solid Electrolyte Interphase (SEI) Models: An Atom Probe Tomography Study on a Commercial Graphite Electrode. ACS Nano 2023; 17:21531-21538. [PMID: 37902648 DOI: 10.1021/acsnano.3c06560] [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] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Lithium-ion batteries (LIBs) are the dominating energy storage technology for electric vehicles and portable electronic devices. Since the resources of raw materials for LIBs are limited and recycling technologies for LIBs are still under development, improvements in the long-term stability of LIBs are of paramount importance and, in addition, would lead to a reduction in the levelized cost of storage (LCOS). A crucial limiting factor is the aging of the solid electrolyte interphase (SEI) on the active material particles in the anode. Here, we demonstrate the potential of atom probe tomography for elucidating the complex mosaic-type structure of the SEI in a graphite composite anode. Our 3D reconstruction shows unseen details and reveals the existence of an apolar organic microphase pervading the SEI over its entire thickness. This finding is in stark contrast to the prevalent two-layer SEI model, in which organic compounds are the dominating species only in the outer SEI layer being in contact with the liquid electrolyte. The observed spatial arrangement of the apolar organic microphase promises a better understanding of the passivation capability of the SEI, which is necessary to expand the battery lifetime.
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Affiliation(s)
- Isabel Pantenburg
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Marvin Cronau
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Torben Boll
- Institute for Applied Materials (IAM-WK), Institute for Nanotechnology (INT), and Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Building 695, 76344 Eggenstein-Leopoldshafen, Germany
| | - Annalena Duncker
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Bernhard Roling
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
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41
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Chen H, Yang M, Liu Y, Yue J, Chen G. Influence of Co 3O 4 Nanostructure Morphology on the Catalytic Degradation of p-Nitrophenol. Molecules 2023; 28:7396. [PMID: 37959816 PMCID: PMC10650910 DOI: 10.3390/molecules28217396] [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: 09/13/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
The design and fabrication of nanomaterials with controllable morphology and size is of critical importance to achieve excellent catalytic performance in heterogeneous catalysis. In this work, cobalt oxide (Co3O4) nanostructures with different morphologies (nanoplates, microflowers, nanorods and nanocubes) were successfully constructed in order to establish the morphology-property-performance relationship of the catalysts. The morphology and structure of the nanostructured Co3O4 were characterized by various techniques, and the catalytic performance of the as-prepared nanostructures was studied by monitoring the reduction of p-nitrophenol to p-aminophenol in the presence of excess NaBH4. The catalytic performance was found to be strongly dependent on their morphologies. The experimental results show that the pseudo-first-order reaction rate constants for Co3O4 nanostructures with various shapes are, respectively, 1.49 min-1 (nanoplates), 1.40 min-1 (microflowers), 0.78 min-1 (nanorods) and 0.23 min-1 (nanocubes). The Co3O4 nanoplates exhibited the highest catalytic activity among the four nanostructures, due to their largest specific surface area, relatively high total pore volume, best redox properties and abundance of defect sites. The established correlation between morphology, property and catalytic performance in this work will offer valuable insight into the design and application of nanostructured Co3O4 as a potential non-noble metal catalyst for p-nitrophenol reduction.
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Affiliation(s)
- Huihui Chen
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China; (H.C.); (Y.L.)
| | - Mei Yang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
| | - Yuan Liu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China; (H.C.); (Y.L.)
| | - Jun Yue
- Department of Chemical Engineering, Engineering and Technology Institute Groningen, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Guangwen Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
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Kadokawa JI. Fabrication of Nanostructured Supramolecules through Helical Inclusion of Amylose toward Hydrophobic Polyester Guests, Biomimetically through Vine-Twining Polymerization Process. Biomimetics (Basel) 2023; 8:516. [PMID: 37999157 PMCID: PMC10669376 DOI: 10.3390/biomimetics8070516] [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: 10/11/2023] [Revised: 10/23/2023] [Accepted: 10/31/2023] [Indexed: 11/25/2023] Open
Abstract
This review article presents the biomimetic helical inclusion of amylose toward hydrophobic polyesters as guests through a vine-twining polymerization process, which has been performed in the glucan phosphorylase (GP)-catalyzed enzymatic polymerization field to fabricate supramolecules and other nanostructured materials. Amylose, which is a representative abundant glucose polymer (polysaccharide) with left-handed helical conformation, is well known to include a number of hydrophobic guest molecules with suitable geometry and size in its cavity to construct helical inclusion complexes. Pure amylose is prepared through enzymatic polymerization of α-d-glucose 1-phosphate as a monomer using a maltooligosaccharide as a primer, catalyzed by GP. It is reported that the elongated amylosic chain at the nonreducing end in enzymatic polymerization twines around guest polymers with suitable structures and moderate hydrophobicity, which is dispersed in aqueous polymerization media, to form amylosic nanostructured inclusion complexes. As the image of this system is similar to how vines of a plant grow around a support rod, this polymerization has been named 'vine-twining polymerization'. In particular, the helical inclusion behavior of the enzymatically produced amylose toward hydrophobic polyesters depending on their structures, e.g., chain lengths and substituents, has been systematically investigated in the vine-twining polymerization field. Furthermore, amylosic supramolecular network materials, such as hydrogels, are fabricated through vine-twining polymerization by using copolymers, where hydrophobic polyester guests or maltooligosaccharide primers are covalently modified on hydrophilic main-chain polymers. The vine-twining polymerization using such copolymers in the appropriate systems induces the formation of amylosic nanostructured inclusion complexes among them, which act as cross-linking points, giving rise to supramolecular networks at the nanoscale. The resulting materials form supramolecular hydrogels, films, and microparticles.
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Affiliation(s)
- Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
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Wang Y, Liu L, Zhu Y, Wang L, Yu DG, Liu LY. Tri-Layer Core-Shell Fibers from Coaxial Electrospinning for a Modified Release of Metronidazole. Pharmaceutics 2023; 15:2561. [PMID: 38004540 PMCID: PMC10674365 DOI: 10.3390/pharmaceutics15112561] [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: 09/28/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023] Open
Abstract
Polymers are the backbone of drug delivery. Electrospinning has greatly enriched the strategies that have been explored for developing novel drug delivery systems using polymers during the past two decades. In this study, four different kinds of polymers, i.e., the water-soluble polymer poly (vinyl alcohol) (PVA), the insoluble polymer poly(ε-caprolactone) (PCL), the insoluble polymer Eudragit RL100 (ERL100) and the pH-sensitive polymer Eudragit S100 (ES100) were successfully converted into types of tri-layer tri-polymer core-shell fibers through bi-fluid coaxial electrospinning. During the coaxial process, the model drug metronidazole (MTD) was loaded into the shell working fluid, which was an emulsion. The micro-formation mechanism of the tri-layer core-shell fibers from the coaxial emulsion electrospinning was proposed. Scanning electron microscope and transmission electron microscope evaluations verified the linear morphology of the resultant fibers and their obvious tri-layer multiple-chamber structures. X-ray diffraction and Fourier transform infrared spectroscopy measurements demonstrated that the drug MTD presented in the fibers in an amorphous state and was compatible with the three polymeric matrices. In vitro dissolution tests verified that the three kinds of polymer could act in a synergistic manner for a prolonged sustained-release profile of MTD in the gut. The drug controlled-release mechanisms were suggested in detail. The protocols reported here pioneer a new route for creating a tri-layer core-shell structure from both aqueous and organic solvents, and a new strategy for developing advanced drug delivery systems with sophisticated drug controlled-release profiles.
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Affiliation(s)
- Ying Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China;
| | - Lin Liu
- Naval Medical Center, Naval Medical University, Shanghai 200433, China; (L.L.); (Y.Z.); (L.W.)
| | - Yuanjie Zhu
- Naval Medical Center, Naval Medical University, Shanghai 200433, China; (L.L.); (Y.Z.); (L.W.)
| | - Liangzhe Wang
- Naval Medical Center, Naval Medical University, Shanghai 200433, China; (L.L.); (Y.Z.); (L.W.)
| | - Deng-Guang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China;
| | - Li-ying Liu
- Naval Medical Center, Naval Medical University, Shanghai 200433, China; (L.L.); (Y.Z.); (L.W.)
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Sharifi Malvajerdi S, Aboutorabi S, Shahnazi A, Gholamhosseini S, Taheri Ghahrizjani R, Yahyaee Targhi F, Erfanimanesh S, Beigverdi R, Imani A, Sari AH, Sun H, Saffarian P, Behmadi H, Nabid MR, Hosseini A, Abrari M, Ghanaatshoar M. HVHC-ESD-Induced Oxygen Vacancies: An Insight into the Phenomena of Interfacial Interactions of Nanostructure Oxygen Vacancy Sites with Oxygen Ion-Containing Organic Compounds. ACS Appl Mater Interfaces 2023; 15:48785-48799. [PMID: 37647519 DOI: 10.1021/acsami.3c10017] [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] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The challenging environmental chemical and microbial pollution has always caused issues for human life. This article investigates the detailed mechanism of photodegradation and antimicrobial activity of oxide semiconductors and realizes the interface phenomena of nanostructures with toxins and bacteria. We demonstrate how oxygen vacancies in nanostructures affect photodegradation and antimicrobial behavior. Additionally, a novel method with a simple, tunable, and cost-effective synthesis of nanostructures for such applications is introduced to resolve environmental issues. The high-voltage, high-current electrical switching discharge (HVHC-ESD) system is a novel method that allows on-the-spot sub-second synthesis of nanostructures on top and in the water for wastewater decontamination. Experiments are done on rhodamine B as a common dye in wastewater to understand its photocatalytic degradation mechanism. Moreover, the antimicrobial mechanism of oxide semiconductors synthesized by the HVHC-ESD method with oxygen vacancies is realized on methicillin- and vancomycin-resistant Staphylococcus aureus strains. The results yield new insights into how oxygen ions in dyes and bacterial walls interact with the surface of ZnO with high oxygen vacancy, which results in breaking of the chemical structure of dyes and bacterial walls. This interaction leads to degradation of organic dyes and bacterial inactivation.
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Affiliation(s)
- Shahab Sharifi Malvajerdi
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shahrzad Aboutorabi
- Department of Biology, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran
| | - Azita Shahnazi
- Department of Polymer Chemistry and Materials, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Saeb Gholamhosseini
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
| | | | - Fatemeh Yahyaee Targhi
- Department of Polymer Chemistry and Materials, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Soroor Erfanimanesh
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, 1417613151 Tehran, Iran
| | - Reza Beigverdi
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, 1417613151 Tehran, Iran
| | - Aref Imani
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
- Institute of Photonics, TU Wien, Gusshausstrasse, 27/3/387/ Vienna, Austria
| | - Amir Hossein Sari
- Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran
| | - Haiding Sun
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Parvaneh Saffarian
- Department of Biology, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran
| | - Homa Behmadi
- Department of Food Engineering and Postharvest Technology, Agricultural Engineering, Research Institute, Agricultural Research, Education and Extension Organization (AREEO), 3135933151 Karaj, Iran
| | - Mohammad Reza Nabid
- Department of Polymer Chemistry and Materials, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Alireza Hosseini
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Masoud Abrari
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Majid Ghanaatshoar
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
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45
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Chen MH, Chen BW, Xu KL, Su VC. Wide-Angle Optical Metasurface for Vortex Beam Generation. Nanomaterials (Basel) 2023; 13:2680. [PMID: 37836321 PMCID: PMC10574251 DOI: 10.3390/nano13192680] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/23/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
In this work, we have achieved an advancement by integrating wide-angle capacity into vortex beams with an impressive topological charge (TC) of 12. This accomplishment was realized through the meticulous engineering of a propagation-phase-designed metasurface. Comprising gallium nitride (GaN), meta-structures characterized by their high-aspect ratio, this metasurface exhibits an average co-polarization transmission efficiency, reaching a remarkable simulated value of up to 97%. The intricate spiral patterns, along with their respective quantification, have been meticulously investigated through tilt-view scanning electron microscopy (SEM) and were further analyzed through the Mach-Zehnder interferometer. A captivating revelation emerged, a distinctive petal-like interference pattern manifests prior to the metasurface's designed focal distance. The occurrence of this petal-like pattern at a specific z-axis position prompts a deliberate manipulation of the helicity of the spiral branches. This strategic helicity alteration is intrinsically tied to the achievement of a minimized donut diameter at the designed focal length. In regard to the angular capability of the device, the captured images continuously showcase prominent attributes within incident angles spanning up to 30 degrees. However, as incident angles surpass the 30-degree threshold, the measured values diverge from their corresponding theoretical projections, resulting in a progressive reduction in the completeness of the donut-shaped structure.
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Affiliation(s)
| | | | | | - Vin-Cent Su
- Department of Electrical Engineering, National United University, Miaoli 36003, Taiwan; (M.-H.C.); (B.-W.C.); (K.-L.X.)
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46
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Ali W, Liu W, Liu Y, Li Z. Near-Infrared Perfect Absorption and Refractive Index Sensing Enabled by Split Ring Nanostructures. Nanomaterials (Basel) 2023; 13:2668. [PMID: 37836309 PMCID: PMC10574369 DOI: 10.3390/nano13192668] [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] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023]
Abstract
Plasmonic nanostructures as narrowband perfect absorbers have garnered significant attention due to their potential applications in biosensing and environment detection. This study emphasizes the investigation of arrayed split ring nanostructures within the configuration of metal-insulator-metal (MIM) multilayers, resulting in a maximum light absorption of 99.94% in the near-infrared (NIR) spectral range. The exceptional absorption efficiency of the device is attributed to the strong resonance of electric and magnetic fields arising from the Fabry-Pérot cavity resonance. The resonant peak can be flexibly tuned by engineering the dielectric layer thickness, the period, and the geometric parameter of split rings. Remarkably, the device exhibits promising capabilities in sensing, demonstrating a sensitivity of 326 nm/RIU in visible wavelengths and 504 nm/RIU in NIR wavelengths when exposed to bio-analytes with varying refractive indices. This designed nanostructure can serve as a promising candidate for biosensors or environmental detection.
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Affiliation(s)
- Wajid Ali
- Hunan Institute of Optoelectronic Integration, College of Materials Science and Engineering, Hunan University, Changsha 410082, China; (W.A.)
| | - Weitao Liu
- Department of Civil, Environmental & Geomatic Engineering, University College London, London WC1E 6BT, UK
| | - Ye Liu
- Hunan Institute of Optoelectronic Integration, College of Materials Science and Engineering, Hunan University, Changsha 410082, China; (W.A.)
| | - Ziwei Li
- Hunan Institute of Optoelectronic Integration, College of Materials Science and Engineering, Hunan University, Changsha 410082, China; (W.A.)
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47
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Marus M, Mukha Y, Wong HT, Chan TL, Smirnov A, Hubarevich A, Hu H. Tsuchime-like Aluminum Film to Enhance Absorption in Ultra-Thin Photovoltaic Cells. Nanomaterials (Basel) 2023; 13:2650. [PMID: 37836291 PMCID: PMC10574175 DOI: 10.3390/nano13192650] [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] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/21/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023]
Abstract
Ultra-thin solar cells enable materials to be saved, reduce deposition time, and promote carrier collection from materials with short diffusion lengths. However, light absorption efficiency in ultra-thin solar panels remains a limiting factor. Most methods to increase light absorption in ultra-thin solar cells are either technically challenging or costly, given the thinness of the functional layers involved. We propose a cost-efficient and lithography-free solution to enhance light absorption in ultra-thin solar cells-a Tsuchime-like self-forming nanocrater (T-NC) aluminum (Al) film. T-NC Al film can be produced by the electrochemical anodization of Al, followed by etching the nanoporous alumina. Theoretical studies show that T-NC film can increase the average absorbance by 80.3%, depending on the active layer's thickness. The wavelength range of increased absorption varies with the active layer thickness, with the peak of absolute absorbance increase moving from 620 nm to 950 nm as the active layer thickness increases from 500 nm to 10 µm. We have also shown that the absorbance increase is retained regardless of the active layer material. Therefore, T-NC Al film significantly boosts absorbance in ultra-thin solar cells without requiring expensive lithography, and regardless of the active layer material.
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Affiliation(s)
- Mikita Marus
- Centre for Advances in Reliability and Safety (CAiRS), Unit 1212–1213, 12/F, Building 19W, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong, China; (M.M.); (H.-T.W.); (T.-L.C.)
- Laboratory for Information Display and Processing Units, Belarusian State University of Informatics and Radioelectronics, 6 P. Brovki, 220013 Minsk, Belarus; (Y.M.); (A.S.)
| | - Yauhen Mukha
- Laboratory for Information Display and Processing Units, Belarusian State University of Informatics and Radioelectronics, 6 P. Brovki, 220013 Minsk, Belarus; (Y.M.); (A.S.)
| | - Him-Ting Wong
- Centre for Advances in Reliability and Safety (CAiRS), Unit 1212–1213, 12/F, Building 19W, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong, China; (M.M.); (H.-T.W.); (T.-L.C.)
| | - Tak-Lam Chan
- Centre for Advances in Reliability and Safety (CAiRS), Unit 1212–1213, 12/F, Building 19W, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong, China; (M.M.); (H.-T.W.); (T.-L.C.)
| | - Aliaksandr Smirnov
- Laboratory for Information Display and Processing Units, Belarusian State University of Informatics and Radioelectronics, 6 P. Brovki, 220013 Minsk, Belarus; (Y.M.); (A.S.)
| | - Aliaksandr Hubarevich
- Laboratory for Information Display and Processing Units, Belarusian State University of Informatics and Radioelectronics, 6 P. Brovki, 220013 Minsk, Belarus; (Y.M.); (A.S.)
| | - Haibo Hu
- Centre for Advances in Reliability and Safety (CAiRS), Unit 1212–1213, 12/F, Building 19W, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong, China; (M.M.); (H.-T.W.); (T.-L.C.)
- Department of Electrical and Electronic Engineering, Hong Kong Polytechnic University, Hong Kong, China
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48
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Lu C, Dai Q, Tang C, Wang X, Xu S, Sun L, Peng Y, Lv W. Towards high photoresponse of perovskite nanowire/copper phthalocyanine heterostructured photodetector. Nanotechnology 2023; 34:495201. [PMID: 37647872 DOI: 10.1088/1361-6528/acf502] [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] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 08/29/2023] [Indexed: 09/01/2023]
Abstract
One-dimensional nanowire structures composed of perovskite are widely recognized for their exceptional optoelectronic performance and mechanical properties, making them a popular area of investigation in photodetection research. In this work, a perovskite nanowire/copper phthalocyanine heterojunction-based photodetector was fabricated, which exhibits high photoresponse in the visible-near-infrared region. The incorporation of a heterojunction significantly enhanced the photoelectric performance. Specifically, the photoresponsivity and external quantum efficiency of the nanowire-based device were elevated from 58.5 A W-1and 1.35 × 104% to 84.5 A W-1and 1.97 × 104% at 532 nm, respectively. The enhanced photoresponse of the heterojunction device can be attributed to the unique microstructure of nanowire arrays. The wrapping of the nanowires by copper phthalocyanine forms heterojunctions with a larger dissociation area, which facilitated exciton dissociation and enhanced device performance. This work provides a promising example for optimizing the performance of nanowire devices.
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Affiliation(s)
- Chengyu Lu
- Institute of Microelectronics, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, People's Republic of China
| | - Qinyong Dai
- National Laboratory of Solid-State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, People's Republic of China
| | - Chenyu Tang
- Institute of Microelectronics, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, People's Republic of China
| | - Xinyu Wang
- Institute of Microelectronics, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, People's Republic of China
| | - Sunan Xu
- Institute of Microelectronics, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, People's Republic of China
| | - Lei Sun
- Institute of Microelectronics, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, People's Republic of China
| | - Yingquan Peng
- Institute of Microelectronics, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, People's Republic of China
- Institute of Microelectronics, School of Physical Science and Technology, Lanzhou University, Lanzhou, People's Republic of China
| | - Wenli Lv
- Institute of Microelectronics, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, People's Republic of China
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Liu T, Wu B, Zhang Y, Mu D, Li N, Su Y, Zhang L, Liu Q, Wu F. Preparation of Buffered Nano-Submicron Hierarchical Structure Hollow SiO x @C Anodes for Lithium-Ion Battery Materials with Carboxymethyl Chitosan. Chemistry 2023; 29:e202301450. [PMID: 37365671 DOI: 10.1002/chem.202301450] [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: 05/06/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 06/28/2023]
Abstract
Silicon-based materials are among the most promising anode materials for next-generation lithium-ion batteries. However, the volume expansion and poor conductivity of silicon-based materials during the charge and discharge process seriously hinder their practical application in the field of anodes. Here, we choose carboxymethyl chitosan (CMCS) as the carbon source coating and binding on the surface of nano silicon and hollow silicon dioxide (H-SiO2 ) to form a hierarchical buffered structure of nano-hollow SiOx @C. The hollow H-SiO2 can alleviate the volume expansion of nano silicon during the lithiation process under continuous cycling. Meanwhile, the carbon layer carbonized by CMCS containing N-doping further regulates the silicon's expansion and improves the conductivity of the active materials. The as- prepared SiOx @C material exhibits an initial discharge capacity of 985.4 mAh g-1 with the decay rate of 0.27 % per cycle in 150 cycles under the current density of 0.2 A g-1 . It is proved that the hierarchical buffer structure nano-hollow SiOx @C anode material has practical application potential.
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Affiliation(s)
- Tao Liu
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Borong Wu
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
- Academician workshop of new Materials, Chonging Innovation Center of Beijing Institute of Technology, Chongqing, 401120, China
- Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing, 100081, China
| | - Yuanxing Zhang
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Daobin Mu
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Ning Li
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
- Academician workshop of new Materials, Chonging Innovation Center of Beijing Institute of Technology, Chongqing, 401120, China
| | - Yuefeng Su
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
- Academician workshop of new Materials, Chonging Innovation Center of Beijing Institute of Technology, Chongqing, 401120, China
| | - Ling Zhang
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
- Academician workshop of new Materials, Chonging Innovation Center of Beijing Institute of Technology, Chongqing, 401120, China
| | - Qi Liu
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Feng Wu
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
- Academician workshop of new Materials, Chonging Innovation Center of Beijing Institute of Technology, Chongqing, 401120, China
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Saghiri MA, Vakhnovetsky J, Samadi E, Napoli S, Samadi F, Conte M, Morgano SM. Effects of Diabetes on Elemental Levels and Nanostructure of Root Canal Dentin. J Endod 2023; 49:1169-1175. [PMID: 37429496 DOI: 10.1016/j.joen.2023.07.002] [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: 03/21/2023] [Revised: 06/26/2023] [Accepted: 07/02/2023] [Indexed: 07/12/2023]
Abstract
INTRODUCTION This study evaluated the effects of diabetes mellitus (DM) on the nanostructure of root canal dentin using high-resolution transmission electron microscopy (HRTEM) and inductively coupled plasma mass spectrometry (ICP-MS). METHODS Twenty extracted human premolars from diabetic and nondiabetic patients (n = 10 in each group) were decoronated and sectioned horizontally into 40 2-mm-thick dentin discs, with each disc designated for a specific test. ICP-MS was used to determine the different elemental levels of copper, lithium, zinc, selenium, strontium, manganese, and magnesium in diabetic and nondiabetic specimens. HRTEM was used to analyze the shape and quantity of the apatite crystals in diabetic and nondiabetic dentin at the nanostructural level. Statistical analysis was performed using Kolmogorov-Smirnov and Student t test (P < .05). RESULTS ICP-MS revealed significant differences in trace element concentrations between the diabetic and nondiabetic specimens (P < .05), with lower levels of magnesium, zinc, strontium, lithium, manganese, and selenium (P < .05), and higher levels of copper in diabetic specimens (P < .05). HRTEM revealed that diabetic dentin exhibited a less compact structure with smaller crystallites and significantly more crystals in the 2500 nm2 area (P < .05). CONCLUSION Diabetic dentin exhibited smaller crystallites and altered elemental levels more than nondiabetic dentin, which could explain the higher root canal treatment failure rate in diabetic patients.
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Affiliation(s)
- Mohammad Ali Saghiri
- Biomaterial and Prosthodontics Laboratory, Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, New Jersey; Department of Endodontics, University of the Pacific, Arthur A. Dugoni School of Dentistry, San Francisco, California.
| | - Julia Vakhnovetsky
- Sector of Innovation in Dentistry, Dr. Hajar Afsar Lajevardi Research Cluster (DHAL), Hackensack, New Jersey; Biomaterial and Prosthodontics Laboratory, Rutgers School of Dental Medicine, Newark, New Jersey; University of Michigan School of Dentistry, Ann Arbor, Michigan
| | - Elham Samadi
- Sector of Innovation in Dentistry, Dr. Hajar Afsar Lajevardi Research Cluster (DHAL), Hackensack, New Jersey; Biomaterial and Prosthodontics Laboratory, Rutgers School of Dental Medicine, Newark, New Jersey
| | - Salvatore Napoli
- Department of Oral and Maxillofacial Surgery, Rutgers School of Dental Medicine, Newark, New Jersey
| | - Fatereh Samadi
- Sector of Innovation in Dentistry, Dr. Hajar Afsar Lajevardi Research Cluster (DHAL), Hackensack, New Jersey; Biomaterial and Prosthodontics Laboratory, Rutgers School of Dental Medicine, Newark, New Jersey
| | - Michael Conte
- Office of Clinical Affairs, Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, New Jersey
| | - Steven M Morgano
- Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, New Jersey
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