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Design and Analysis of Highly Sensitive LSPR-Based Metal–Insulator–Metal Nano-Discs as a Biosensor for Fast Detection of SARS-CoV-2. PHOTONICS 2022. [DOI: 10.3390/photonics9080542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
For over 2 years, the coronavirus has been the most urgent challenge to humanity, and the development of rapid and accurate detection methods is crucial to control these viruses. Here, a 3D FDTD simulation of Au/SiO2/Au metal–insulator–metal (MIM) nanostructures as a biosensor was performed. The strong coupling between the two plasmonic interfaces in the Au/SiO2/Au cavity helped us to obtain relatively higher sensitivity. The attachment of SARS-CoV-2 changed the refractive index, which was used to detect SARS-CoV-2. Due to the higher overlapping of plasmonic mode with the environment of nano-discs, a higher sensitivity of 312.8 nm/RIU was obtained. The peak wavelength of the proposed structure shifted by approximately 47 nm when the surrounding medium refractive index changed from 1.35 (no binding) to 1.5 (full binding). Consequently, the SPR peak intensity variation can be used as another sensing mechanism to detect SARS-CoV-2. Finally, the previously reported refractive index changes for various concentrations of the SARS-CoV-2 S-glycoprotein solution were used to evaluate the performance of the designed biosensor.
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Nanoplasmonic biosensors: Theory, structure, design, and review of recent applications. Anal Chim Acta 2021; 1185:338842. [PMID: 34711322 DOI: 10.1016/j.aca.2021.338842] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/04/2021] [Accepted: 07/05/2021] [Indexed: 11/20/2022]
Abstract
Nanoplasmonic biosensing shows an immense potential to satisfy the needs of the global health industry - low-cost, fast, and portable automated systems; highly sensitive and real-time detection; multiplexing and miniaturization. In this review, we presented the theory of nanoplasmonic biosensing for popular detection schemes - SPR, LSPR, and EOT - and underline the consideration for nanostructure design, material selection, and their effects on refractometric sensing performance. Later, we covered the bottom-up and top-down nanofabrication methods for nanoplasmonic biosensors. Subsequently, we reviewed the recent examples of nanoplasmonic biosensors over a wide range of clinically relevant analytes in the diagnosis and prognosis of a wide range of diseases and conditions such as biomarker proteins, infectious bacteria, viral agents. Finally, we discussed the challenges of nanoplasmonic biosensing toward clinical translation and proposed strategic avenues to be competitive against current clinical detection methods. Hopefully, nanoplasmonic biosensing can realize its potential through successful demonstrations of clinical translation in the upcoming years.
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Li C, Liu X, Du X, Yang T, Li Q, Jin L. Preparation and optical properties of nanostructure thin films. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01930-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lee WS, Lee S, Kang T, Ryu CM, Jeong J. Detection of Ampicillin-Resistant E. coli Using Novel Nanoprobe-Combined Fluorescence In Situ Hybridization. NANOMATERIALS 2019; 9:nano9050750. [PMID: 31100845 PMCID: PMC6567190 DOI: 10.3390/nano9050750] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/04/2019] [Accepted: 05/12/2019] [Indexed: 12/11/2022]
Abstract
Antibiotic-resistant bacteria present a global threat because the infections they cause are difficult to treat. Therefore, it is highly important to develop advanced methods for the identification of antibiotic resistance gene in the virulent bacteria. Here, we report the development of novel nanoprobes for fluorescence in situ hybridization (FISH) and the application of the nanoprobe to the detection of ampicillin-resistant Escherichia coli. The nanoprobe for FISH was synthesized by the modified sol-gel chemistry and the synthesized nanoprobe provided strong fluorescent signals and pH stability even under natural light condition. For the double-identification of bacteria species and ampicillin-resistance with a single probe in situ, the nanoprobes were conjugated to the two kinds of biotinylated probe DNAs; one for E. coli-species specific gene and the other for a drug-resistant gene. By using the nanoprobe-DNA conjugants, we successfully detected the ampicillin-resistant E. coli through the FISH technique. This result suggests the new insight into light stable FISH application of the nanoprobe for a pathogenic antibiotic-resistance bacterium.
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Affiliation(s)
- Wang Sik Lee
- Environmental Disease Research Center, Korea Research Institute of Bioscience Biotechnology (KRIBB), Daejeon 34141, Korea.
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Korea.
| | - Soohyun Lee
- Infectious Disease Research Center, KRIBB, Daejeon 34141, Korea.
| | - Taejoon Kang
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Korea.
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Korea.
| | - Choong-Min Ryu
- Infectious Disease Research Center, KRIBB, Daejeon 34141, Korea.
- Department of Biosystems and Bioengineering, KRIBB School of Biotechnology, UST, Daejeon 34113, Korea.
| | - Jinyoung Jeong
- Environmental Disease Research Center, Korea Research Institute of Bioscience Biotechnology (KRIBB), Daejeon 34141, Korea.
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Korea.
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Prasad A, Choi J, Jia Z, Park S, Gartia MR. Nanohole array plasmonic biosensors: Emerging point-of-care applications. Biosens Bioelectron 2019; 130:185-203. [PMID: 30738247 PMCID: PMC6475599 DOI: 10.1016/j.bios.2019.01.037] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/03/2019] [Accepted: 01/18/2019] [Indexed: 01/18/2023]
Abstract
Point-of-care (POC) applications have expanded hugely in recent years and is likely to continue, with an aim to deliver cheap, portable, and reliable devices to meet the demands of healthcare industry. POC devices are designed, prototyped, and assembled using numerous strategies but the key essential features that biosensing devices require are: (1) sensitivity, (2) selectivity, (3) specificity, (4) repeatability, and (5) good limit of detection. Overall the fabrication and commercialization of the nanohole array (NHA) setup to the outside world still remains a challenge. Here, we review the various methods of NHA fabrication, the design criteria, the geometrical features, the effects of surface plasmon resonance (SPR) on sensing as well as current state-of-the-art of existing NHA sensors. This review also provides easy-to-understand examples of NHA-based POC biosensing applications, its current status, challenges, and future prospects.
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Affiliation(s)
- Alisha Prasad
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Junseo Choi
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA; NIH Center for BioModular Multiscale Systems for Precision Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Zheng Jia
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA; NIH Center for BioModular Multiscale Systems for Precision Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Sunggook Park
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA; NIH Center for BioModular Multiscale Systems for Precision Medicine, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Manas Ranjan Gartia
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
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Russo V, Michieli N, Cesca T, Scian C, Silvestri D, Morpurgo M, Mattei G. Gold-silver alloy semi-nanoshell arrays for label-free plasmonic biosensors. NANOSCALE 2017; 9:10117-10125. [PMID: 28695942 DOI: 10.1039/c7nr01982c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanosphere lithography coupled with reactive ion etching has been used to synthesize hexagonal ordered arrays of Au-Ag bimetallic semi-nanoshells to be used as plasmonic biosensors. The degree of lateral interaction between adjacent semi-nanoshells can be controlled by tailoring the reactive ion etching time in order to boost the global plasmonic properties through the formation of near-field hot-spots, which in turn can improve the sensitivity of the biosensors. To test the efficiency of the proposed system as a biosensor, we used an established protocol for the detection of biomolecules (local sensitivity), based on the receptor-ligand approach and using the biotin-streptavidin model system. We also tested the sensitivity to a homogeneous change in the refractive index of the buffer over the sensor (bulk sensitivity). Comparing the obtained results to those of an array of nanoprisms, chosen as a benchmark, significantly higher performances both in local and bulk sensitivities have been found, in agreement with electrodynamics simulations based on finite-element methods.
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Affiliation(s)
- Valentina Russo
- University of Padova, Department of Physics and Astronomy, NanoStructures Group, via Marzolo 8, I-35131 Padova, Italy.
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Niu L, Jiang X, Zhao Y, Ma H, Yang J, Cheng K, Du Z. Large-area, size-tunable Si nanopillar arrays with enhanced antireflective and plasmonic properties. NANOTECHNOLOGY 2016; 27:315601. [PMID: 27345038 DOI: 10.1088/0957-4484/27/31/315601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper, a novel method using the modified Langmuir-Blodgett and float-transfer techniques was introduced to construct the perfect PS monolayer nanosphere template with large area up to cm(2). Based on such templates, the diameter, length, packing density, and the shape of Si nanopillar arrays (Si NPAs) could be precisely controlled and tuned through the modified nanosphere lithography combined with a metal-assisted chemical etching (NSL-MACE) method. Manipulation of the etching time can effectively avoid permanent deformation/clumping to generate size-tunable Si NPAs. The optical properties of the Si NPAs can be controlled by the Si NPA morphologies resulting from the different reactive ion etching (RIE) time and chemical etching time. The enhanced antireflective property and electromagnetic field effect of Au/Si NPAs were proved by the results. The new modified NSL-MACE technique with the capability of scale-up fabrication of Si NPAs would be helpful for potential applications in optoelectronic devices.
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Affiliation(s)
- Lihong Niu
- Key Lab for Special Functional Materials of Ministry of Education, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, People's Republic of China
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Focsan M, Campu A, Craciun AM, Potara M, Leordean C, Maniu D, Astilean S. A simple and efficient design to improve the detection of biotin-streptavidin interaction with plasmonic nanobiosensors. Biosens Bioelectron 2016; 86:728-735. [PMID: 27476053 DOI: 10.1016/j.bios.2016.07.054] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/29/2016] [Accepted: 07/16/2016] [Indexed: 02/06/2023]
Abstract
In this manuscript we propose a simple and efficient strategy to improve the sensitivity of localized surface plasmon resonance (LSPR) shift-based biosensors using biotin-streptavidin recognition interaction as a proof-of-concept. Specifically, biotin molecules are immobilized on a low-cost plasmonic LSPR biosensor based on annealed self-assembled spherical gold nanoparticles (AuNSs) and successively incubated with increasing concentrations of streptavidin, achieving a limit of detection (LOD) of 5nM. Interestingly, when the detection is performed by the same biotin-functionalized plasmonic AuNSs substrate but against streptavidin previously conjugated to gold nanorods, the LSPR shift is 26-fold enhanced. Moreover, we confirm these results through numerical simulations and demonstrate that the proposed sensing architecture can operate as transducer not only to confirm the adsorption of bioanalyte but also to provide the chemical identity of the capture and targeted molecules from their vibrational Raman fingerprints. Therefore, we are confident that the development of such plasmonic biosensors that use metallic labels for improving the sensitivity of detection could become highly promising for future point-of-care diagnostic assays, pushing sensitivity towards single-molecule detection limit.
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Affiliation(s)
- Monica Focsan
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurean Str. 42, Cluj-Napoca, 400271, Romania
| | - Andreea Campu
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurean Str. 42, Cluj-Napoca, 400271, Romania
| | - Ana-Maria Craciun
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurean Str. 42, Cluj-Napoca, 400271, Romania
| | - Monica Potara
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurean Str. 42, Cluj-Napoca, 400271, Romania
| | - Cosmin Leordean
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurean Str. 42, Cluj-Napoca, 400271, Romania
| | - Dana Maniu
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurean Str. 42, Cluj-Napoca, 400271, Romania; Biomolecular Physics Department, Faculty of Physics, Babes-Bolyai University, M Kogalniceanu Str. 1, Cluj-Napoca, 400084, Romania
| | - Simion Astilean
- Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurean Str. 42, Cluj-Napoca, 400271, Romania; Biomolecular Physics Department, Faculty of Physics, Babes-Bolyai University, M Kogalniceanu Str. 1, Cluj-Napoca, 400084, Romania.
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Stabilization of gold nanoparticles on glass surface with polydopamine thin film for reliable LSPR sensing. J Colloid Interface Sci 2015; 460:258-63. [DOI: 10.1016/j.jcis.2015.08.075] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 08/30/2015] [Accepted: 08/31/2015] [Indexed: 11/22/2022]
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Qiu G, Ng SP, Wu CML. Differential phase-detecting localized surface plasmon resonance sensor with self-assembly gold nano-islands. OPTICS LETTERS 2015; 40:1924-7. [PMID: 25927749 DOI: 10.1364/ol.40.001924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Self-assembly (SAM) gold nano-islands are fabricated by two-step thin-film deposition-annealing method. Despite random distribution of the SAM, the p-polarized light after total internal reflection shows significant phase transition at the extinction wavelengths upon refractive index variation due to localized surface plasmon resonance (LSPR) effect. It resembles the sharp phase transition observed in conventional surface plasmon resonance (SPR) biosensors, so that the bulk sensitivity of the SAM-LSPR sensor is improved via the phase interrogation method. In this Letter, we present both computational and experimental investigations to the SAM-LSPR sensor and the results show excellent agreement with each other. With bulk refractive index resolution to 9.75×10(-8) RIU, we believe the phase-detecting SAM-LSPR sensor would be an essential step toward low-cost label-free sensing applications.
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Yokoyama K, Oishi M, Oshima M. Development of a compact label-free small molecule measurement system using a periodically nanostructured sensor substrate. RSC Adv 2015. [DOI: 10.1039/c4ra13449d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Compact label-free small molecule measurement system with visible light.
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Affiliation(s)
| | - M. Oishi
- Institute of Industrial Science
- The University of Tokyo
- Meguro-Ku
- Japan
| | - M. Oshima
- Institute of Industrial Science
- The University of Tokyo
- Meguro-Ku
- Japan
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