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Yi K, Ao M, Ding T, Zheng D, Li L. Bowtie Nanoantenna LSPR Biosensor for Early Prediction of Preeclampsia. BIOSENSORS 2024; 14:317. [PMID: 39056593 PMCID: PMC11274383 DOI: 10.3390/bios14070317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/17/2024] [Accepted: 06/19/2024] [Indexed: 07/28/2024]
Abstract
OBJECTIVE The concentration of the placental circulating factor in early pregnancy is often extremely low, and the traditional prediction method cannot meet the clinical demand for early detection preeclampsia in high-risk gravida. It is of prime importance to seek an ultra-sensitive early prediction method. METHODS In this study, finite-different time-domain (FDTD) and Discrete Dipole Approximation (DDA) simulation, and electron beam lithography (EBL) methods were used to develop a bowtie nanoantenna (BNA) with the best field enhancement and maximum coupling efficiency. Bio-modification of the placental circulating factor (sFlt-1, PLGF) to the noble nanoparticles based on the amino coupling method were explored. A BNA LSPR biosensor which can specifically identify the placental circulating factor in preeclampsia was constructed. RESULTS The BNA LSPR biosensor can detect serum placental circulating factors without toxic labeling. Serum sFlt-1 extinction signal (Δλmax) in the preeclampsia group was higher than that in the normal pregnancy group (14.37 ± 2.56 nm vs. 4.21 ± 1.36 nm), p = 0.008, while the serum PLGF extinction signal in the preeclampsia group was lower than that in the normal pregnancy group (5.36 ± 3.15 nm vs. 11.47 ± 4.92 nm), p = 0.013. The LSPR biosensor detection results were linearly consistent with the ELISA kit. CONCLUSIONS LSPR biosensor based on BNA can identify the serum placental circulating factor of preeclampsia with high sensitivity, without toxic labeling and with simple operation, and it is expected to be an early detection method for preeclampsia.
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Affiliation(s)
- Ke Yi
- Gynecology Department of West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Mengyin Ao
- Gynecology Department of West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Ting Ding
- Gynecology Department of West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Danxi Zheng
- Gynecology Department of West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Lin Li
- Gynecology Department of West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu 610041, China
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2
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Wu X, Chen J, Wang S, Ren Y, Yang Y, He Z. Sensing Based on Plasmon-Induced Transparency in H-Shaped Graphene-Based Metamaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:997. [PMID: 38921873 PMCID: PMC11206642 DOI: 10.3390/nano14120997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/06/2024] [Accepted: 06/06/2024] [Indexed: 06/27/2024]
Abstract
Graphene can support surface plasmon polaritons (SPPs) in the terahertz band, and graphene SPP sensors are widely used in the field of terahertz micro- and nano-optical devices. In this paper, we propose an H-shaped graphene metasurface and investigate the plasmon-induced transparency (PIT) phenomenon in the proposed structure using the finite-difference time-domain (FDTD) method. Our results show that the Fermi energy levels, as well as certain shape parameters, can effectively modulate the PIT phenomenon in the proposed structure. Interestingly, changing some of these shape parameters can excite two dips into three. In terms of sensing performance, the maximum values of sensitivity and figure of merit (FOM) are 1.4028 THz/RIU and 17.97, respectively. These results offer valuable guidance for the use of terahertz optical graphene SPP sensors.
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Affiliation(s)
- Xiongxiong Wu
- School of Physics and Electronic Information, Yan’an University, Yan’an 716000, China; (J.C.); (S.W.); (Y.R.); (Z.H.)
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3
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Akib TBA, Mostufa S, Rana MM, Hossain MB, Islam MR. A performance comparison of heterostructure surface plasmon resonance biosensor for the diagnosis of novel coronavirus SARS-CoV-2. OPTICAL AND QUANTUM ELECTRONICS 2023; 55:448. [PMID: 37008732 PMCID: PMC10039361 DOI: 10.1007/s11082-023-04700-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/18/2023] [Indexed: 06/19/2023]
Abstract
This paper presents a performance comparison of heterostructure surface plasmon resonance (SPR) biosensors for the application of Novel Coronavirus SARS-CoV-2 diagnosis. The comparison is performed and compared with the existing literature based on the performance parameters in terms of several prisms such as BaF2, BK7, CaF2, CsF, SF6, and SiO2, several adhesion layers such as TiO2, Chromium, plasmonic metals such as Ag, Au, and two-dimensional (2D) transition metal dichalcogenides materials such as BP, Graphene, PtSe2 MoS2, MoSe2, WS2, WSe2. To study the performance of the heterostructure SPR sensor, the transfer matrix method is applied, and to analyses, the electric field intensity near the graphene-sensing layer contact, the finite-difference time-domain approach is utilized. Numerical results show that the heterostructure comprised of CaF2/TiO2/Ag/BP/Graphene/Sensing-layer has the best sensitivity and detection accuracy. The proposed sensor has an angle shift sensitivity of 390°/refractive index unit (RIU). Furthermore, the sensor achieved a detection accuracy of 0.464, a quality factor of 92.86/RIU, a figure of merit of 87.95, and a combined sensitive factor of 85.28. Furthermore, varied concentrations (0-1000 nM) of biomolecule binding interactions between ligands and analytes have been observed for the prospects of diagnosis of the SARS-CoV-2 virus. Results demonstrate that the proposed sensor is well suited for real-time and label-free detection particularly SARS-CoV-2 virus detection.
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Affiliation(s)
- Tarik Bin Abdul Akib
- Department of Electrical and Electronic Engineering, Rajshahi University of Engineering and Technology, Rajshahi, 6204 Bangladesh
- Department of Electrical and Electronic Engineering, Bangladesh Army University of Engineering and Technology, Rajshahi, 6431 Bangladesh
| | - Shahriar Mostufa
- Department of Electrical and Electronic Engineering, Rajshahi University of Engineering and Technology, Rajshahi, 6204 Bangladesh
| | - Md. Masud Rana
- Department of Electrical and Electronic Engineering, Rajshahi University of Engineering and Technology, Rajshahi, 6204 Bangladesh
| | - Md. Biplob Hossain
- Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong, NSW 2522 Australia
- Department of Electrical and Electronic Engineering, Jashore University of Science and Technology, Jashore, 7408 Bangladesh
| | - Md. Rabiul Islam
- Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong, NSW 2522 Australia
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4
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Chota A, George BP, Abrahamse H. Recent Advances in Green Metallic Nanoparticles for Enhanced Drug Delivery in Photodynamic Therapy: A Therapeutic Approach. Int J Mol Sci 2023; 24:4808. [PMID: 36902238 PMCID: PMC10003542 DOI: 10.3390/ijms24054808] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Globally, cancer is one of the leading causes of death among men and women, it is characterized by the unregulated proliferation of tumor cells. Some of the common risk factors associated with cancer development include the consistent exposure of body cells to carcinogenic agents such as alcohol, tobacco, toxins, gamma rays and alpha particles. Besides the above-mentioned risk factors, conventional therapies such as radiotherapy, and chemotherapy have also been linked to the development of cancer. Over the past decade, tremendous efforts have been invested in the synthesis of eco-friendly green metallic nanoparticles (NPs), and their medical application. Comparatively, metallic NPs have greater advantages over conventional therapies. Additionally, metallic NPs can be functionalized with different targeting moieties e.g., liposomes, antibodies, folic acid, transferrin, and carbohydrates. Herein, we review and discuss the synthesis, and therapeutic potential of green synthesized metallic NPs for enhanced cancer photodynamic therapy (PDT). Finally, the advantages of green hybridized activatable NPs over conventional photosensitizers (PSs) and the future perspectives of nanotechnology in cancer research are discussed in the review. Furthermore, we anticipate that the insights offered in this review will inspire the design and development of green nano-formulations for enhanced image-guided PDT in cancer treatment.
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Affiliation(s)
| | - Blassan P. George
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Johannesburg 2028, South Africa
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5
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Bhaskar S. Biosensing Technologies: A Focus Review on Recent Advancements in Surface Plasmon Coupled Emission. MICROMACHINES 2023; 14:mi14030574. [PMID: 36984981 PMCID: PMC10054051 DOI: 10.3390/mi14030574] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/23/2023] [Accepted: 02/26/2023] [Indexed: 05/14/2023]
Abstract
In the past decade, novel nano-engineering protocols have been actively synergized with fluorescence spectroscopic techniques to yield higher intensity from radiating dipoles, through the process termed plasmon-enhanced fluorescence (PEF). Consequently, the limit of detection of analytes of interest has been dramatically improvised on account of higher sensitivity rendered by augmented fluorescence signals. Recently, metallic thin films sustaining surface plasmon polaritons (SPPs) have been creatively hybridized with such PEF platforms to realize a substantial upsurge in the global collection efficiency in a judicious technology termed surface plasmon-coupled emission (SPCE). While the process parameters and conditions to realize optimum coupling efficiency between the radiating dipoles and the plasmon polaritons in SPCE framework have been extensively discussed, the utility of disruptive nano-engineering over the SPCE platform and analogous interfaces such as 'ferroplasmon-on-mirror (FPoM)' as well as an alternative technology termed 'photonic crystal-coupled emission (PCCE)' have been seldom reviewed. In light of these observations, in this focus review, the myriad nano-engineering protocols developed over the SPCE, FPoM and PCCE platform are succinctly captured, presenting an emphasis on the recently developed cryosoret nano-assembly technology for photo-plasmonic hotspot generation (first to fourth). These technologies and associated sensing platforms are expected to ameliorate the current biosensing modalities with better understanding of the biophysicochemical processes and related outcomes at advanced micro-nano-interfaces. This review is hence envisaged to present a broad overview of the latest developments in SPCE substrate design and development for interdisciplinary applications that are of relevance in environmental as well as biological heath monitoring.
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Affiliation(s)
- Seemesh Bhaskar
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory (HMNTL), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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6
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Zhang B, Zhang S, Xia Y, Yu P, Xu Y, Dong Y, Wei Q, Wang J. High-Performance Room-Temperature NO 2 Gas Sensor Based on Au-Loaded SnO 2 Nanowires under UV Light Activation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4062. [PMID: 36432348 PMCID: PMC9698136 DOI: 10.3390/nano12224062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Optical excitation is widely acknowledged as one of the most effective means of balancing sensor responses and response/recovery properties at room temperature (RT, 25 °C). Moreover, noble metals have been proven to be suitable as photosensitizers for optical excitation. Localized surface plasmon resonance (LSPR) determines the liberalization of quasi-free electrons in noble metals under light irradiation, and numerous injected electrons in semiconductors will greatly promote the generation of chemisorbed oxygen, thus elevating the sensor response. In this study, pure SnO2 and Au/SnO2 nanowires (NWs) were successfully synthesized through the electrospinning method and validated using XRD, EDS, HRTEM, and XPS. Although a Schottky barrier led to a much higher initial resistance of the Au/SnO2 composite compared with pure SnO2 at RT in the dark, the photoinduced resistance of the Au/SnO2 composite became lower than that of pure SnO2 under UV irradiation with the same intensity, which confirmed the effect of LSPR. Furthermore, when used as sensing materials, a detailed comparison between the sensing properties of pure SnO2 and Au/SnO2 composite toward NO2 in the dark and under UV irradiation highlighted the crucial role of the LSPR effects. In particular, the response of Au/SnO2 NWs toward 5 ppm NO2 could reach 65 at RT under UV irradiation, and the response/recovery time was only 82/42 s, which far exceeded those under Au modification-only or optical excitation-only. Finally, the gas-sensing mechanism corresponding to the change in sensor performance in each case was systematically proposed.
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Affiliation(s)
- Bo Zhang
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Institute of Advanced Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Shuai Zhang
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Institute of Advanced Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Yi Xia
- Research Center for Analysis and Measurement, Analytic & Testing Research Center of Yunnan, Kunming University of Science and Technology, Kunming 650093, China
| | - Pingping Yu
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Institute of Advanced Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Yin Xu
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Institute of Advanced Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Yue Dong
- Engineering Research Center of IoT Technology Applications (Ministry of Education), Department of Electronic Engineering, Institute of Advanced Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Qufu Wei
- Key Laboratory of Eco-Textiles (Ministry of Education), Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Jing Wang
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
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7
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Negm A, Howlader MMR, Belyakov I, Bakr M, Ali S, Irannejad M, Yavuz M. Materials Perspectives of Integrated Plasmonic Biosensors. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7289. [PMID: 36295354 PMCID: PMC9611134 DOI: 10.3390/ma15207289] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/02/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
With the growing need for portable, compact, low-cost, and efficient biosensors, plasmonic materials hold the promise to meet this need owing to their label-free sensitivity and deep light-matter interaction that can go beyond the diffraction limit of light. In this review, we shed light on the main physical aspects of plasmonic interactions, highlight mainstream and future plasmonic materials including their merits and shortcomings, describe the backbone substrates for building plasmonic biosensors, and conclude with a brief discussion of the factors affecting plasmonic biosensing mechanisms. To do so, we first observe that 2D materials such as graphene and transition metal dichalcogenides play a major role in enhancing the sensitivity of nanoparticle-based plasmonic biosensors. Then, we identify that titanium nitride is a promising candidate for integrated applications with performance comparable to that of gold. Our study highlights the emerging role of polymer substrates in the design of future wearable and point-of-care devices. Finally, we summarize some technical and economic challenges that should be addressed for the mass adoption of plasmonic biosensors. We believe this review will be a guide in advancing the implementation of plasmonics-based integrated biosensors.
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Affiliation(s)
- Ayman Negm
- Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada
- Department of Electronics and Communications Engineering, Cairo University, Giza 12613, Egypt
| | - Matiar M. R. Howlader
- Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Ilya Belyakov
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Mohamed Bakr
- Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Shirook Ali
- Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada
- School of Mechanical and Electrical Engineering Technology, Sheridan College, Brampton, ON L6Y 5H9, Canada
| | | | - Mustafa Yavuz
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
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8
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Graphene-Encapsulated Silver Nanoparticles for Plasmonic Vapor Sensing. NANOMATERIALS 2022; 12:nano12142473. [PMID: 35889696 PMCID: PMC9319566 DOI: 10.3390/nano12142473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/12/2022] [Accepted: 07/14/2022] [Indexed: 02/04/2023]
Abstract
Graphene-covered silver nanoparticles were prepared directly on highly oriented pyrolytic graphite substrates and characterized by atomic force microscopy. UV–Vis reflectance spectroscopy was used to measure the shift in the local surface plasmon resonance (LSPR) upon exposure to acetone, ethanol, 2-propanol, toluene, and water vapor. The optical responses were found to be substance-specific, as also demonstrated by principal component analysis. Point defects were introduced in the structure of the graphene overlayer by O2 plasma. The LSPR was affected by the plasma treatment, but it was completely recovered using subsequent annealing. It was found that the presence of defects increased the response for toluene and water while decreasing it for acetone.
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Treebupachatsakul T, Boosamalee A, Chaithatwanitch K, Pechprasarn S. Generalized figure of merit for plasmonic dip measurement-based surface plasmon resonance sensors. BIOMEDICAL OPTICS EXPRESS 2022; 13:1784-1800. [PMID: 35519274 PMCID: PMC9045920 DOI: 10.1364/boe.451023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
We propose a theoretical framework to analyze quantitative sensing performance parameters, including sensitivity, full width at half maximum, plasmonic dip position, and figure of merits for different surface plasmon operating conditions for a Kretschmann configuration. Several definitions and expressions of the figure of merit have been reported in the literature. Moreover, the optimal operating conditions for each figure of merit are, in fact, different. In addition, there is still no direct figure of merit comparison between different expressions and definitions to identify which definition provides a more accurate performance prediction. Here shot-noise model and Monte Carlo simulation mimicking the noise behavior in SPR experiments have been applied to quantify standard deviation in the SPR plasmonic dip measurements to evaluate the performance responses of the figure of merits. Here, we propose and formulate a generalized figure of merit definition providing a good performance estimation to the detection limit. The measurement parameters employed in the figure of merit formulation are identified by principal component analysis and machine learning. We also show that the proposed figure of merit can provide a good estimation for the surface plasmon resonance performance of plasmonic materials, including gold and aluminum, with no need for a resource-demanding computation.
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Affiliation(s)
- Treesukon Treebupachatsakul
- Department of Biomedical Engineering, School of Engineering, King Mongkut's Institute of Technology, Ladkrabang, Bangkok 10520, Thailand
| | - Apivitch Boosamalee
- Department of Biomedical Engineering, School of Engineering, King Mongkut's Institute of Technology, Ladkrabang, Bangkok 10520, Thailand
| | - Kamejira Chaithatwanitch
- Department of Biomedical Engineering, School of Engineering, King Mongkut's Institute of Technology, Ladkrabang, Bangkok 10520, Thailand
| | - Suejit Pechprasarn
- College of Biomedical Engineering, Rangsit University, Pathum Thani 12000, Thailand
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10
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Histidine Functionalized Gold Nanoparticles for Screening Aminoglycosides and Nanomolar Level Detection of Streptomycin in Water, Milk, and Whey. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9120358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aminoglycoside (AMG) antibiotics are being applied to treat infections caused by Gram-negative bacteria, mainly in livestock, and are prescribed only in severe cases because of their adverse impacts on human health and the environment. Monitoring antibiotic residues in dairy products relies on the accessibility of portable and efficient analytical techniques. Presently, high-throughput screening techniques have been proposed to detect several antimicrobial drugs having identical structural and functional features. The L-histidine functionalized gold nanoparticles (His@AuNPs) do not form a complex with other tested antibiotic classes but show high selectivity for AMG antibiotics. We used ligand-induced aggregation of His@AuNPs as a rapid and sensitive localized surface plasmon resonance (LSPR) assay for AMG antibiotics, producing longitudinal extinction shifts at 660 nm. Herein, we explore the practical application of His@AuNPs to detect streptomycin spiked in water, milk, and whey fraction of milk with nanomolar level sensitivity. The ability of the analytical method to recognize target analytes sensitively and rapidly is of great significance to perform monitoring, thus would certainly reassure widespread use of AMG antibiotics. The biosynthesis of hybrid organic–inorganic metal nanoparticles like His@AuNPs with desired size distribution, stability, and specific host–guest recognition proficiency, would further facilitate applications in various other fields.
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11
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Du G, Bao X, Lin S, Pang H, Bannur Nanjunda S, Bao Q. Infrared Polaritonic Biosensors Based on Two-Dimensional Materials. Molecules 2021; 26:molecules26154651. [PMID: 34361804 PMCID: PMC8347072 DOI: 10.3390/molecules26154651] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
In recent years, polaritons in two-dimensional (2D) materials have gained intensive research interests and significant progress due to their extraordinary properties of light-confinement, tunable carrier concentrations by gating and low loss absorption that leads to long polariton lifetimes. With additional advantages of biocompatibility, label-free, chemical identification of biomolecules through their vibrational fingerprints, graphene and related 2D materials can be adapted as excellent platforms for future polaritonic biosensor applications. Extreme spatial light confinement in 2D materials based polaritons supports atto-molar concentration or single molecule detection. In this article, we will review the state-of-the-art infrared polaritonic-based biosensors. We first discuss the concept of polaritons, then the biosensing properties of polaritons on various 2D materials, then lastly the impending applications and future opportunities of infrared polaritonic biosensors for medical and healthcare applications.
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Affiliation(s)
- Guangyu Du
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China; (G.D.); (H.P.)
- Songshan Lake Materials Laboratory, Dongguan 523808, China;
| | - Xiaozhi Bao
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Macau, China;
| | - Shenghuang Lin
- Songshan Lake Materials Laboratory, Dongguan 523808, China;
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China; (G.D.); (H.P.)
| | - Shivananju Bannur Nanjunda
- Department of Electrical Engineering, Centre of Excellence in Biochemical Sensing and Imaging Technologies (Cen-Bio-SIM), Indian Institute of Technology Madras, Chennai 600036, India
- Correspondence: (S.B.N.); (Q.B.)
| | - Qiaoliang Bao
- Shenzhen Exciton Science and Technology Ltd., Shenzhen 518052, China
- Correspondence: (S.B.N.); (Q.B.)
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12
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Noh S, Kim J, Kim G, Park C, Jang H, Lee M, Lee T. Recent Advances in CRP Biosensor Based on Electrical, Electrochemical and Optical Methods. SENSORS 2021; 21:s21093024. [PMID: 33925825 PMCID: PMC8123455 DOI: 10.3390/s21093024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/13/2021] [Accepted: 04/22/2021] [Indexed: 12/12/2022]
Abstract
C-reactive protein (CRP) is an acute-phase reactive protein that appears in the bloodstream in response to inflammatory cytokines such as interleukin-6 produced by adipocytes and macrophages during the acute phase of the inflammatory/infectious process. CRP measurement is widely used as a representative acute and chronic inflammatory disease marker. With the development of diagnostic techniques measuring CRP more precisely than before, CRP is being used not only as a traditional biomarker but also as a biomarker for various diseases. The existing commercialized CRP assays are dominated by enzyme-linked immunosorbent assay (ELISA). ELISA has high selectivity and sensitivity, but its limitations include requiring complex analytic processes, long analysis times, and professional manpower. To overcome these problems, nanobiotechnology is able to provide alternative diagnostic tools. By introducing the nanobio hybrid material to the CRP biosensors, CRP can be measured more quickly and accurately, and highly sensitive biosensors can be used as portable devices. In this review, we discuss the recent advancements in electrochemical, electricity, and spectroscopy-based CRP biosensors composed of biomaterial and nanomaterial hybrids.
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Affiliation(s)
- Seungwoo Noh
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Korea; (S.N.); (J.K.); (G.K.); (C.P.)
| | - Jinmyeong Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Korea; (S.N.); (J.K.); (G.K.); (C.P.)
| | - Gahyeon Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Korea; (S.N.); (J.K.); (G.K.); (C.P.)
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Korea; (S.N.); (J.K.); (G.K.); (C.P.)
| | - Hongje Jang
- Department of Chemistry, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul 01897, Korea;
| | - Minho Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea
- Correspondence: (M.L.); (T.L.); Tel.: +82-2-820-8320 (M.L.); +82-2-940-5771 (T.L.)
| | - Taek Lee
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, Korea; (S.N.); (J.K.); (G.K.); (C.P.)
- Correspondence: (M.L.); (T.L.); Tel.: +82-2-820-8320 (M.L.); +82-2-940-5771 (T.L.)
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13
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Kitadai H, Yuan M, Ma Y, Ling X. Graphene-Based Environmental Sensors: Electrical and Optical Devices. Molecules 2021; 26:molecules26082165. [PMID: 33918751 PMCID: PMC8070241 DOI: 10.3390/molecules26082165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/29/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022] Open
Abstract
In this review paper, we summarized the recent progress of using graphene as a sensing platform for environmental applications. Especially, we highlight the electrical and optical sensing devices developed based on graphene and its derivatives. We discussed the role of graphene in these devices, the sensing mechanisms, and the advantages and disadvantages of specific devices. The approaches to improve the sensitivity and selectivity are also discussed.
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Affiliation(s)
- Hikari Kitadai
- Department of Chemistry, Boston University, Boston, MA 02215, USA; (H.K.); (M.Y.)
| | - Meng Yuan
- Department of Chemistry, Boston University, Boston, MA 02215, USA; (H.K.); (M.Y.)
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China;
| | - Yongqiang Ma
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China;
| | - Xi Ling
- Department of Chemistry, Boston University, Boston, MA 02215, USA; (H.K.); (M.Y.)
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
- The Photonics Center, Boston University, Boston, MA 02215, USA
- Correspondence:
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Synthesis and Characterization of Graphene-Silver Nanoparticle Hybrid Materials. MATERIALS 2020; 13:ma13204660. [PMID: 33086668 PMCID: PMC7603374 DOI: 10.3390/ma13204660] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 01/23/2023]
Abstract
Silver nanoparticles (Ag NPs) play important roles in the development of plasmonic applications. Combining these nanoparticles with graphene can yield hybrid materials with enhanced light–matter interaction. Here, we report a simple method for the synthesis of graphene–silver nanoparticle hybrids on highly oriented pyrolytic graphite (HOPG) substrates. We demonstrate by scanning tunneling microscopy and local tunneling spectroscopy measurements the electrostatic n-type doping of graphene by contact with silver. We show by UV-Vis reflectance investigations that the local surface plasmon resonance (LSPR) of Ag NPs partially covered with graphene is preserved for at least three months, i.e., three times longer than the LSPR of bare Ag NPs. The gradual loss of LSPR is due to the spontaneous sulfurization of non-covered Ag NPs, as revealed by scanning electron microscopy and energy-dispersive X-ray spectroscopy. We show that the Ag NPs completely sandwiched between graphene and HOPG do not sulfurize, even after one year.
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15
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Li J, Wang H, Li Z, Su Z, Zhu Y. Preparation and Application of Metal Nanoparticals Elaborated Fiber Sensors. SENSORS 2020; 20:s20185155. [PMID: 32927607 PMCID: PMC7570743 DOI: 10.3390/s20185155] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 02/05/2023]
Abstract
In recent years, surface plasmon resonance devices (SPR, or named plamonics) have attracted much more attention because of their great prospects in breaking through the optical diffraction limit and developing new photons and sensing devices. At the same time, the combination of SPR and optical fiber promotes the development of the compact micro-probes with high-performance and the integration of fiber and planar waveguide. Different from the long-range SPR of planar metal nano-films, the local-SPR (LSPR) effect can be excited by incident light on the surface of nano-scaled metal particles, resulting in local enhanced light field, i.e., optical hot spot. Metal nano-particles-modified optical fiber LSPR sensor has high sensitivity and compact structure, which can realize the real-time monitoring of physical parameters, environmental parameters (temperature, humidity), and biochemical molecules (pH value, gas-liquid concentration, protein molecules, viruses). In this paper, both fabrication and application of the metal nano-particles modified optical fiber LSPR sensor probe are reviewed, and its future development is predicted.
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Affiliation(s)
- Jin Li
- College of Information Science and Engineering, Northeastern University, Shenyang 110819, China; (H.W.); (Z.L.); (Z.S.); (Y.Z.)
- State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
- Key Laboratory of Data Analytics and Optimization for Smart Industry (Northeastern University), Ministry of Education, Shenyang 110819, China
- Correspondence:
| | - Haoru Wang
- College of Information Science and Engineering, Northeastern University, Shenyang 110819, China; (H.W.); (Z.L.); (Z.S.); (Y.Z.)
| | - Zhi Li
- College of Information Science and Engineering, Northeastern University, Shenyang 110819, China; (H.W.); (Z.L.); (Z.S.); (Y.Z.)
| | - Zhengcheng Su
- College of Information Science and Engineering, Northeastern University, Shenyang 110819, China; (H.W.); (Z.L.); (Z.S.); (Y.Z.)
| | - Yue Zhu
- College of Information Science and Engineering, Northeastern University, Shenyang 110819, China; (H.W.); (Z.L.); (Z.S.); (Y.Z.)
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16
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Influence of Saline Buffers over the Stability of High-Annealed Gold Nanoparticles Formed on Coverslips for Biological and Chemosensing Applications. BIOENGINEERING (BASEL, SWITZERLAND) 2020; 7:bioengineering7030068. [PMID: 32635222 PMCID: PMC7552610 DOI: 10.3390/bioengineering7030068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 11/17/2022]
Abstract
Herein, coverslips were used as solid supports for the synthesis of gold nanoparticles (AuNPs) in three steps: (i) detergent cleaning, (ii) evaporation of 4 nm gold film and (iii) exposure at high annealing temperature (550 °C) for 3 h. Such active gold nanostructured supports were investigated for their stability performances in aqueous saline buffers for new assessments of chemical sensing. Two model buffers, namely saline-sodium phosphate-EDTA buffer (SSPE) and phosphate buffer saline (PBS), that are often used in the construction of (bio)sensors, are selected for the optical and microscopic investigations of their influence over the stability of annealed AuNPs on coverslips when using a dropping procedure under dry and wet media working conditions. A study over five weeks monitoring the evolution of the localized surface plasmon resonance (LSPR) chemosensing of 1,2-bis-(4-pyridyl)-ethene (BPE) is discussed. It is concluded that the optimal sensing configuration is based on annealed AuNPs exposed to saline buffers under wet media conditions (overnight at 4 °C) and functionalized with BPE concentrations (10-3-10-11 M) with the highest LSPR spectra after two weeks.
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Saratale GD, Saratale RG, Ghodake G, Shinde S, Kim DY, Alyousef AA, Arshad M, Syed A, Pant D, Shin HS. Chlortetracycline-Functionalized Silver Nanoparticles as a Colorimetric Probe for Aminoglycosides: Ultrasensitive Determination of Kanamycin and Streptomycin. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E997. [PMID: 32455981 PMCID: PMC7279544 DOI: 10.3390/nano10050997] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 05/20/2020] [Indexed: 12/23/2022]
Abstract
Aminoglycosides (AMGs) have been extensively used to treat infectious diseases caused by Gram-negative bacteria in livestock and humans. A selective and sensitive colorimetric probe for the determination of streptomycin and kanamycin was proposed based on chlortetracycline-coated silver nanoparticles (AgNPs-CTC) as the sensing element. Almost all of the tested aminoglycoside antibiotics can rapidly induce the aggregation of AgNPs, along with a color change from yellow to orange/red. The selective detection of aminoglycoside antibiotics, including tobramycin, streptomycin, amikacin, gentamicin, neomycin, and kanamycin, with other types of antibiotics, can be achieved by ultraviolet (UV) spectroscopy. This developed colorimetric assay has ability to detect various AMGs using in-depth surface plasmon resonance (SPR) studies. With this determination of streptomycin and kanamycin was achieved at the picomolar level (pM) by using a UV-visible spectrophotometer. Under aqueous conditions, the linear range of the colorimetric sensor for streptomycin and kanamycin was 1000-1,1000 and 120-480 pM, respectively. The corresponding limit of detection was 2000 pM and 120 pM, respectively. Thus, the validated dual colorimetric and ratiometric method can find various analytical applications for the ultrasensitive and rapid detection of AMG antibiotics in water samples.
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Affiliation(s)
- Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Korea;
| | - Rijuta Ganesh Saratale
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Korea;
| | - Gajanan Ghodake
- Department of Biological and Environmental Science, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Korea; (G.G.); (S.S.); (D.-Y.K.)
| | - Surendra Shinde
- Department of Biological and Environmental Science, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Korea; (G.G.); (S.S.); (D.-Y.K.)
| | - Dae-Young Kim
- Department of Biological and Environmental Science, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Korea; (G.G.); (S.S.); (D.-Y.K.)
| | - Abdullah A. Alyousef
- Microbiology Research Group, Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia; (A.A.A.); (M.A.)
| | - Mohammed Arshad
- Microbiology Research Group, Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia; (A.A.A.); (M.A.)
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Deepak Pant
- Separation and Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium;
| | - Han-Seung Shin
- Department of Food Science and Biotechnology, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Korea;
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18
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Rostami S, Mehdinia A, Niroumand R, Jabbari A. Enhanced LSPR performance of graphene nanoribbons-silver nanoparticles hybrid as a colorimetric sensor for sequential detection of dopamine and glutathione. Anal Chim Acta 2020; 1120:11-23. [PMID: 32475387 DOI: 10.1016/j.aca.2020.04.060] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/31/2020] [Accepted: 04/25/2020] [Indexed: 01/17/2023]
Abstract
In the present study, a novel plasmonic sensing platform was proposed for sequential colorimetric detection of dopamine (DA) and glutathione (GSH) in human serum sample by taking advantage of plasmon hybridization in graphene nanoribbons/sliver nanoparticles (GNR/Ag NPs) hybrid. DA was detected based on etching strategy and morphology transition of label-free Ag NPs hybridized with GNR. As a result of the etching process, hexagonal Ag NPs were changed to smaller corner-truncated nanoparticles and a blue shift was observed in its plasmonic band, accompanied by the color change from green to red. Sequentially, GSH induced aggregation of Ag NPs which resulted in a decrease in absorption intensity of Ag NPs plasmonic band and a color change from red to gray. By employing GNR/Ag NPs hybrid as a sensitive colorimetric sensor, DA and GSH were successfully detected in low concentrations of 0.04 μM and 0.23 μM, respectively. The same experiment was carried out in the absence of GNR and the detection limits were obtained 0.46 and 1.2 μM for DA and GSH, respectively. These results confirmed the effective role of GNR on the sensitivity improvement of GNR/Ag NPs hybrid. The proposed simple and sensitive sensing approach offered a beneficial and promising platform for sequential detection of DA and GSH in the biological samples.
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Affiliation(s)
- Simindokht Rostami
- Department of Analytical Chemistry, Faculty of Chemistry, K. N. Toosi University of Technology, Tehran, Iran
| | - Ali Mehdinia
- Department of Marine Living Science, Ocean Sciences Research Center, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran.
| | - Ramin Niroumand
- Department of Analytical Chemistry, Faculty of Chemistry, K. N. Toosi University of Technology, Tehran, Iran
| | - Ali Jabbari
- Department of Analytical Chemistry, Faculty of Chemistry, K. N. Toosi University of Technology, Tehran, Iran
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Chou Chau YF, Chou Chao CT, Huang HJ, Kooh MRR, Kumara NTRN, Lim CM, Chiang HP. Perfect Dual-Band Absorber Based on Plasmonic Effect with the Cross-Hair/Nanorod Combination. NANOMATERIALS 2020; 10:nano10030493. [PMID: 32182902 PMCID: PMC7153243 DOI: 10.3390/nano10030493] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 03/02/2020] [Accepted: 03/06/2020] [Indexed: 01/30/2023]
Abstract
Plasmonic effect using a cross-hair can convey strongly localized surface plasmon modes among the separated composite nanostructures. Compared to its counterpart without the cross-hair, this characteristic has the remarkable merit of enhancing absorptance at resonance and can make the structure carry out a dual-band plasmonic perfect absorber (PPA). In this paper, we propose and design a novel dual-band PPA with a gathering of four metal-shell nanorods using a cross-hair operating at visible and near-infrared regions. Two absorptance peaks at 1050 nm and 750 nm with maximal absorptance of 99.59% and 99.89% for modes 1 and 2, respectively, are detected. High sensitivity of 1200 nm refractive unit (1/RIU), figure of merit of 26.67 and Q factor of 23.33 are acquired, which are very remarkable compared with the other PPAs. In addition, the absorptance in mode 1 is about nine times compared to its counterpart without the cross-hair. The proposed structure gives a novel inspiration for the design of a tunable dual-band PPA, which can be exploited for plasmonic sensor and other nanophotonic devices.
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Affiliation(s)
- Yuan-Fong Chou Chau
- Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Tungku Link, Gadong BE1410, Brunei; (M.R.R.K.); (N.T.R.N.K.); (C.M.L.)
- Correspondence: (Y.-F.C.C.); (H.-P.C.); Tel.: +673-7150039 (Y.-F.C.C.); +886-2-24622192 (ext. 6702) (H.-P.C.)
| | - Chung-Ting Chou Chao
- Department of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung 20224, Taiwan;
| | - Hung Ji Huang
- Taiwan Instrument Research Institute, National Applied Research Laboratories, Hsinchu 300, Taiwan;
| | - Muhammad Raziq Rahimi Kooh
- Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Tungku Link, Gadong BE1410, Brunei; (M.R.R.K.); (N.T.R.N.K.); (C.M.L.)
| | - N. T. R. N. Kumara
- Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Tungku Link, Gadong BE1410, Brunei; (M.R.R.K.); (N.T.R.N.K.); (C.M.L.)
| | - Chee Ming Lim
- Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Tungku Link, Gadong BE1410, Brunei; (M.R.R.K.); (N.T.R.N.K.); (C.M.L.)
| | - Hai-Pang Chiang
- Department of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung 20224, Taiwan;
- Institute of Physics, Academia Sinica, Taipei 115, Taiwan
- Correspondence: (Y.-F.C.C.); (H.-P.C.); Tel.: +673-7150039 (Y.-F.C.C.); +886-2-24622192 (ext. 6702) (H.-P.C.)
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21
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Hong Q, Luo J, Wen C, Zhang J, Zhu Z, Qin S, Yuan X. Hybrid metal-graphene plasmonic sensor for multi-spectral sensing in both near- and mid-infrared ranges. OPTICS EXPRESS 2019; 27:35914-35924. [PMID: 31878756 DOI: 10.1364/oe.27.035914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/14/2019] [Indexed: 05/21/2023]
Abstract
This paper proposes a hybrid metal-graphene plasmonic sensor which can simultaneously perform multi-spectral sensing in near- and mid-IR ranges. The proposed sensor consists of an array of asymmetric gold nano-antennas integrated with an unpatterned graphene sheet. The gold antennas support sharp Fano-resonances for near-IR sensing while the excitation of graphene plasmonic resonances extend the sensing spectra to the mid-IR range. Such a broadband spectral range goes far beyond previously demonstrated multi-spectral plasmonic sensors. The sensitivity and figure of merit (FOM) as well as their dependence on the thickness of the sensing layer and Fermi energy of graphene are studied systematically. This new type of sensor combines the advantages of conventional metallic plasmonic sensors and graphene plasmonic sensors and may open a new door for high-performance, multi-functional plasmonic sensing.
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Piszter G, Kertész K, Molnár G, Pálinkás A, Deák A, Osváth Z. Vapour sensing properties of graphene-covered gold nanoparticles. NANOSCALE ADVANCES 2019; 1:2408-2415. [PMID: 36131993 PMCID: PMC9417911 DOI: 10.1039/c9na00110g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/21/2019] [Indexed: 06/15/2023]
Abstract
We investigated the vapour sensing properties of different graphene-gold hybrid nanostructures. We observed the shifts in the optical spectra near the local surface plasmon resonance of the gold nanoparticles by changing the concentration and nature of the analytes (ethanol, 2-propanol, and toluene). The smaller, dome-like gold nanoparticles proved to be more sensitive to these vapours compared to slightly larger, flat nanoparticles. We investigated how the optical response of the gold nanoparticles can be tuned with a corrugated graphene overlayer. We showed that the presence of graphene increased the sensitivity to ethanol and 2-propanol, while it decreased it towards toluene exposure (at concentrations ≥ 30%). The slope changes observed on the optical response curves were discussed in the framework of capillary condensation. These results can have potential impact on the development of new sensors based on graphene-gold hybrids.
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Affiliation(s)
- Gábor Piszter
- Institute of Technical Physics and Materials Science, MFA, Centre for Energy Research, Hungarian Academy of Sciences 1525 Budapest P.O. Box 49 Hungary
- Korea-Hungary Joint Laboratory for Nanosciences (KHJLN) 1525 Budapest P.O. Box 49 Hungary
| | - Krisztián Kertész
- Institute of Technical Physics and Materials Science, MFA, Centre for Energy Research, Hungarian Academy of Sciences 1525 Budapest P.O. Box 49 Hungary
- Korea-Hungary Joint Laboratory for Nanosciences (KHJLN) 1525 Budapest P.O. Box 49 Hungary
| | - György Molnár
- Institute of Technical Physics and Materials Science, MFA, Centre for Energy Research, Hungarian Academy of Sciences 1525 Budapest P.O. Box 49 Hungary
| | - András Pálinkás
- Institute of Technical Physics and Materials Science, MFA, Centre for Energy Research, Hungarian Academy of Sciences 1525 Budapest P.O. Box 49 Hungary
- Korea-Hungary Joint Laboratory for Nanosciences (KHJLN) 1525 Budapest P.O. Box 49 Hungary
| | - András Deák
- Institute of Technical Physics and Materials Science, MFA, Centre for Energy Research, Hungarian Academy of Sciences 1525 Budapest P.O. Box 49 Hungary
| | - Zoltán Osváth
- Institute of Technical Physics and Materials Science, MFA, Centre for Energy Research, Hungarian Academy of Sciences 1525 Budapest P.O. Box 49 Hungary
- Korea-Hungary Joint Laboratory for Nanosciences (KHJLN) 1525 Budapest P.O. Box 49 Hungary
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