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Li R, Fan H, Chen Y, Huang J, Liu GL, Huang L. Application of nanoplasmonic biosensors based on nanoarrays in biological and chemical detection. OPTICS EXPRESS 2023; 31:21586-21613. [PMID: 37381254 DOI: 10.1364/oe.470786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/17/2022] [Indexed: 06/30/2023]
Abstract
Technological innovation, cost effectiveness, and miniaturization are key factors that determine the commercial adaptability and sustainability of sensing platforms. Nanoplasmonic biosensors based on nanocup or nanohole arrays are attractive for the development of various miniaturized devices for clinical diagnostics, health management, and environmental monitoring. In this review, we discuss the latest trends in the engineering and development of nanoplasmonic sensors as biodiagnostic tools for the highly sensitive detection of chemical and biological analytes. We focused on studies that have explored flexible nanosurface plasmon resonance systems using a sample and scalable detection approach in an effort to highlight multiplexed measurements and portable point-of-care applications.
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Sampad MJN, Amin MN, Hawkins AR, Schmidt H. FPGA Integrated Optofluidic Biosensor for Real-Time Single Biomarker Analysis. IEEE PHOTONICS JOURNAL 2022; 14:10.1109/jphot.2021.3127484. [PMID: 34900090 PMCID: PMC8658630 DOI: 10.1109/jphot.2021.3127484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Integrated optofluidic biosensors can fill the need for sensitive, amplification-free, multiplex single molecule detection which is relevant for containing the spread of infectious diseases such as COVID-19. Here, we demonstrate a rapid sample-to-answer scheme that uses a field programmable gate array (FPGA) to enable live monitoring of single particle fluorescence analysis on an optofluidic chip. Fluorescent nanobeads flowing through a micro channel are detected with 99% accuracy and particle concentrations in clinically relevant ranges from 3.4×104 to 3.4 × 106/ml are determined within seconds to a few minutes without the need for post-experiment data extraction and analysis. In addition, other extract salient experimental parameters such as dynamic flow rate changes can be monitored in real time. The sensor is validated with real-time fluorescence detection of single bacterial plasmid DNA at attomolar concentrations, showing excellent promise for implementation as a point of care (POC) diagnostic tool.
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Affiliation(s)
| | - Md Nafiz Amin
- School of Engineering, University of California Santa Cruz, Santa Cruz, CA 95064 USA
| | - Aaron R Hawkins
- ECEn Department, Brigham Young University, Provo, UT 84602 USA
| | - Holger Schmidt
- School of Engineering, University of California Santa Cruz, Santa Cruz, CA 95064 USA
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3
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Fibre-Optic Surface Plasmon Resonance Biosensor for Monoclonal Antibody Titer Quantification. BIOSENSORS-BASEL 2021; 11:bios11100383. [PMID: 34677339 PMCID: PMC8534111 DOI: 10.3390/bios11100383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 12/21/2022]
Abstract
An extraordinary optical transmission fibre-optic surface plasmon resonance biosensing platform was engineered to improve its portability and sensitivity, and was applied to monitor the concentrations of monoclonal antibodies (Mabs). By refining the fabricating procedure and changing the material of the flow cell and the components of the optical fibre, the biosensor is portable and robust to external interference. After the implementation of an effective template cleaning procedure and precise control during the fabrication process, a consistent sensitivity of 509 ± 5 nm per refractive index unit (nm/RIU) was achieved. The biosensor can detect the Mab with a limit of detection (LOD) of 0.44 µg/mL. The results show that the biosensor is a potential tool for the rapid quantification of Mab titers. The biosensor can be regenerated at least 10 times with 10 mM glycine (pH = 2.5), and consistent signal changes were obtained after regeneration. Moreover, the employment of a spacer arm SM(PEG)2, used for immobilising protein A onto the gold film, was demonstrated to be unable to improve the detecting sensitivity; thus, a simple procedure without the spacer arm could be used to prepare the protein A-based biosensor. Our results demonstrate that the fibre-optic surface plasmon resonance biosensor is competent for the real-time and on-line monitoring of antibody titers in the future as a process analytical technologies (PATs) tool for bioprocess developments and the manufacture of therapeutic antibodies.
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Abstract
At the end of the XX century, a new phenomenon was discovered by Ebbesen, the extraordinary optical transmission. He reported that metallic arrays composed of nano holes, also called nanoantennas, can support resonant optical transmissions responsible by the amplification and concentration of electromagnetic radiation. Classical diffraction theories do not predict this extraordinary phenomenon. This article shows the timeline of theories that try to model the interaction between light and metal planes with slits, holes, grooves or apertures. The comparison between theories is done. Furthermore, as the optical response of these nanoantennas is dependent on the complex dielectric function, there is a high probability of successfully using these structures as sensors. This article aimed to verify how the structure parameters (periodicity, hole diameter, nanoantenna thickness and substrate thickness) can influence the optical response in order to tune the spectrum. Using a Finite Element Tool, several 3D simulations aim to conclude about the parameters influence on air–gold–quartz and air–aluminum–quartz structures, being the nanoantenna made with gold and aluminum. Moreover, all the simulations allow us to verify a resonant spectral response and the existence of great values of amplification near the metal surface. This is a clear evidence of a energy exchange due to the generation and propagation of surface plasmon polaritons. Based on the spectra taken from the parameter analysis, a specific structure was chosen to test two different sensors. A temperature sensor and a tissue detection sensor were tested and the simulations are presented. It is concluded that a nanostructure based on a nanoantenna can be used as a sensor for several applications.
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5
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Zhao C, Xu X, Ferhan AR, Chiang N, Jackman JA, Yang Q, Liu W, Andrews AM, Cho NJ, Weiss PS. Scalable Fabrication of Quasi-One-Dimensional Gold Nanoribbons for Plasmonic Sensing. NANO LETTERS 2020; 20:1747-1754. [PMID: 32027140 PMCID: PMC7067626 DOI: 10.1021/acs.nanolett.9b04963] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Plasmonic nanostructures have a wide range of applications, including chemical and biological sensing. However, the development of techniques to fabricate submicrometer-sized plasmonic structures over large scales remains challenging. We demonstrate a high-throughput, cost-effective approach to fabricate Au nanoribbons via chemical lift-off lithography (CLL). Commercial HD-DVDs were used as large-area templates for CLL. Transparent glass slides were coated with Au/Ti films and functionalized with self-assembled alkanethiolate monolayers. Monolayers were patterned with lines via CLL. The lifted-off, exposed regions of underlying Au were selectively etched into large-area grating-like patterns (200 nm line width; 400 nm pitch; 60 nm height). After removal of the remaining monolayers, a thin In2O3 layer was deposited and the resulting gratings were used as plasmonic sensors. Distinct features in the extinction spectra varied in their responses to refractive index changes in the solution environment with a maximum bulk sensitivity of ∼510 nm/refractive index unit. Sensitivity to local refractive index changes in the near-field was also achieved, as evidenced by real-time tracking of lipid vesicle or protein adsorption. These findings show how CLL provides a simple and economical means to pattern large-area plasmonic nanostructures for applications in optoelectronics and sensing.
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Affiliation(s)
- Chuanzhen Zhao
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Xiaobin Xu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, & Institute for Advanced Study, Tongji University, Shanghai 201804, China
| | - Abdul Rahim Ferhan
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Naihao Chiang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Joshua A. Jackman
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- SKKU-UCLA-NTU Precision Biology Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Qing Yang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Wenfei Liu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Anne M. Andrews
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Nam-Joon Cho
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- SKKU-UCLA-NTU Precision Biology Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459 Singapore
| | - Paul S. Weiss
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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Chuang CS, Wu CY, Juan PH, Hou NC, Fan YJ, Wei PK, Sheen HJ. LMP1 gene detection using a capped gold nanowire array surface plasmon resonance sensor in a microfluidic chip. Analyst 2020; 145:52-60. [DOI: 10.1039/c9an01419e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A new detection device by using SPR nanowire array chip and a microfluidics system was developed. A simple, low-cost and reproducible SPR nanowire chip with a visible light source displayed real-time detection capability.
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Affiliation(s)
- Chih-Shen Chuang
- Institute of Applied Mechanics
- National Taiwan University
- Taipei 10617
- Taiwan
- School of Biomedical Engineering
| | - Chieh-Ying Wu
- Institute of Applied Mechanics
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Po-Han Juan
- Institute of Applied Mechanics
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Nai-Cheng Hou
- Institute of Applied Mechanics
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Yu-Jui Fan
- School of Biomedical Engineering
- Taipei Medical University
- Taipei 11031
- Taiwan
- International PhD Program for Biomedical Engineering
| | - Pei-Kuen Wei
- Research Center for Applied Sciences
- Academia Sinica
- Taipei 11529
- Taiwan
| | - Horn-Jiunn Sheen
- Institute of Applied Mechanics
- National Taiwan University
- Taipei 10617
- Taiwan
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Zeng X, Yang Y, Zhang N, Ji D, Gu X, Jornet J, Wu Y, Gan Q. Plasmonic Interferometer Array Biochip as a New Mobile Medical Device for Cancer Detection. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS : A PUBLICATION OF THE IEEE LASERS AND ELECTRO-OPTICS SOCIETY 2019; 25:7201707. [PMID: 30983848 PMCID: PMC6456910 DOI: 10.1109/jstqe.2018.2865418] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We report a plasmonic interferometer array (PIA) sensor and demonstrate its ability to detect circulating exosomal proteins in real-time with high sensitivity and low cost to enable the early detection of cancer. Specifically, a surface plasmon wave launched by the nano-groove rings interferes with the free-space light at the output of central nano-aperture and results in an intensity interference pattern. Under the single-wavelength illumination, when the target exosomal proteins are captured by antibodies bound on the surface, the biomediated change in the refractive index between the central aperture and groove rings causes the intensity change in transmitted light. By recording the intensity changes in real-time, one can effectively screen biomolecular binding events and analyze the binding kinetics. By integrating signals from multiple sensor pairs to enhance the signal-to-noise ratio, superior sensing resolutions of 1.63×10-6 refractive index unit (RIU) in refractive index change and 3.86×108 exosomes/mL in exosome detection were realized, respectively. Importantly, this PIA sensor can be imaged by a miniaturized microscope system coupled with a smart phone to realize a portable and highly sensitive healthcare device. The sensing resolution of 9.72×109 exosomes/mL in exosome detection was realized using the portable sensing system building upon a commercial smartphone.
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Affiliation(s)
- Xie Zeng
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY
14260, USA
| | - Yunchen Yang
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY
14260, USA
| | - Nan Zhang
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY
14260, USA
| | - Dengxin Ji
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY
14260, USA
| | - Xiaodong Gu
- Huashan Hospital, Fudan University, Shanghai 200433, China
| | - Josep Jornet
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY
14260, USA
| | - Yun Wu
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY
14260, USA
| | - Qiaoqiang Gan
- Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, NY
14260, USA
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Tramarin L, Barrios CA. Design of an Aluminum/Polymer Plasmonic 2D Crystal for Label-Free Optical Biosensing. SENSORS (BASEL, SWITZERLAND) 2018; 18:s18103335. [PMID: 30301186 PMCID: PMC6211116 DOI: 10.3390/s18103335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/02/2018] [Accepted: 10/03/2018] [Indexed: 06/08/2023]
Abstract
A design study of a nanostructured two-dimensional plasmonic crystal based on aluminum and polymeric material for label-free optical biosensing is presented. The structure is formed of Al nanohole and nanodisk array layers physically separated by a polymeric film. The photonic configuration was analyzed through finite-difference time-domain (FDTD) simulations. The calculated spectral reflectance of the device exhibits a surface plasmon polariton (SPP) resonance feature sensitive to the presence of a modeled biolayer adhered onto the metal surfaces. Simulations also reveal that the Al disks suppress an undesired SPP resonance, improving the device performance in terms of resolution as compared to that of a similar configuration without Al disks. On the basis of manufacturability issues, nanohole diameter and depth were considered as design parameters, and a multi-objective optimization process was employed to determine the optimum dimensional values from both performance and fabrication points of view. The effect of Al oxidation, which is expected to occur in an actual device, was also studied.
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Affiliation(s)
- Luca Tramarin
- Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), ETSI Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, Madrid 28040, Spain.
| | - Carlos Angulo Barrios
- Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), ETSI Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, Madrid 28040, Spain.
- Department of Photonics and Bioengineering (TFB), ETSI Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, Madrid 28040, Spain.
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9
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Lee KL, Chang CC, You ML, Pan MY, Wei PK. Enhancing Surface Sensing Sensitivity of Metallic Nanostructures using Blue-Shifted Surface Plasmon Mode and Fano Resonance. Sci Rep 2018; 8:9762. [PMID: 29950690 PMCID: PMC6021451 DOI: 10.1038/s41598-018-28122-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 06/12/2018] [Indexed: 11/15/2022] Open
Abstract
Improving surface sensitivities of nanostructure-based plasmonic sensors is an important issue to be addressed. Among the SPR measurements, the wavelength interrogation is commonly utilized. We proposed using blue-shifted surface plasmon mode and Fano resonance, caused by the coupling of a cavity mode (angle-independent) and the surface plasmon mode (angle-dependent) in a long-periodicity silver nanoslit array, to increase surface (wavelength) sensitivities of metallic nanostructures. It results in an improvement by at least a factor of 4 in the spectral shift as compared to sensors operated under normal incidence. The improved surface sensitivity was attributed to a high refractive index sensitivity and the decrease of plasmonic evanescent field caused by two effects, the Fano coupling and the blue-shifted resonance. These concepts can enhance the sensing capability and be applicable to various metallic nanostructures with periodicities.
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Affiliation(s)
- Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei, 11529, Taiwan.
| | - Chia-Chun Chang
- Department of Optoelectronics, National Taiwan Ocean University, Keelung, 20224, Taiwan
| | - Meng-Lin You
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei, 11529, Taiwan
| | - Ming-Yang Pan
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei, 11529, Taiwan
- Institute of Photonics Technologies, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Pei-Kuen Wei
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei, 11529, Taiwan.
- Department of Optoelectronics, National Taiwan Ocean University, Keelung, 20224, Taiwan.
- Institute of Biophotonics, National Yang-Ming University, Taipei, 11221, Taiwan.
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Xu Q, Mahpeykar SM, Burgess IB, Wang X. Inverse Opal Photonic Crystals as an Optofluidic Platform for Fast Analysis of Hydrocarbon Mixtures. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20120-20127. [PMID: 29763285 DOI: 10.1021/acsami.8b03179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Most of the reported optofluidic devices analyze liquid by measuring its refractive index. Recently, the wettability of liquid on various substrates has also been used as a key sensing parameter in optofluidic sensors. However, the above-mentioned techniques face challenges in the analysis of the relative concentration of components in an alkane hydrocarbon mixture, as both refractive indices and wettabilities of alkane hydrocarbons are very close. Here, we propose to apply volatility of liquid as the key sensing parameter, correlate it to the optical property of liquid inside inverse opal photonic crystals, and construct powerful optofluidic sensors for alkane hydrocarbon identification and analysis. We have demonstrated that via evaporation of hydrocarbons inside the periodic structure of inverse opal photonic crystals and observation of their reflection spectra, an inverse opal film could be used as a fast-response optofluidic sensor to accurately differentiate pure hydrocarbon liquids and relative concentrations of their binary and ternary mixtures in tens of seconds. In these 3D photonic crystals, pure chemicals with different volatilities would have different evaporation rates and can be easily identified via the total drying time. For multicomponent mixtures, the same strategy is applied to determine the relative concentration of each component simply by measuring drying time under different temperatures. Using this optofluidic sensing platform, we have determined the relative concentrations of ternary hydrocarbon mixtures with the difference of only one carbon between alkane hydrocarbons, which is a big step toward detailed hydrocarbon analysis for practical use.
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Affiliation(s)
- Qiwei Xu
- Department of Electrical and Computer Engineering , University of Alberta , Edmonton T6G 2V4 , Canada
| | - Seyed Milad Mahpeykar
- Department of Electrical and Computer Engineering , University of Alberta , Edmonton T6G 2V4 , Canada
| | - Ian B Burgess
- Validere Technologies , Toronto , Ontario M5G 1L7 , Canada
| | - Xihua Wang
- Department of Electrical and Computer Engineering , University of Alberta , Edmonton T6G 2V4 , Canada
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11
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Jackman JA, Rahim Ferhan A, Cho NJ. Nanoplasmonic sensors for biointerfacial science. Chem Soc Rev 2018; 46:3615-3660. [PMID: 28383083 DOI: 10.1039/c6cs00494f] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In recent years, nanoplasmonic sensors have become widely used for the label-free detection of biomolecules across medical, biotechnology, and environmental science applications. To date, many nanoplasmonic sensing strategies have been developed with outstanding measurement capabilities, enabling detection down to the single-molecule level. One of the most promising directions has been surface-based nanoplasmonic sensors, and the potential of such technologies is still emerging. Going beyond detection, surface-based nanoplasmonic sensors open the door to enhanced, quantitative measurement capabilities across the biointerfacial sciences by taking advantage of high surface sensitivity that pairs well with the size of medically important biomacromolecules and biological particulates such as viruses and exosomes. The goal of this review is to introduce the latest advances in nanoplasmonic sensors for the biointerfacial sciences, including ongoing development of nanoparticle and nanohole arrays for exploring different classes of biomacromolecules interacting at solid-liquid interfaces. The measurement principles for nanoplasmonic sensors based on utilizing the localized surface plasmon resonance (LSPR) and extraordinary optical transmission (EOT) phenomena are first introduced. The following sections are then categorized around different themes within the biointerfacial sciences, specifically protein binding and conformational changes, lipid membrane fabrication, membrane-protein interactions, exosome and virus detection and analysis, and probing nucleic acid conformations and binding interactions. Across these themes, we discuss the growing trend to utilize nanoplasmonic sensors for advanced measurement capabilities, including positional sensing, biomacromolecular conformation analysis, and real-time kinetic monitoring of complex biological interactions. Altogether, these advances highlight the rich potential of nanoplasmonic sensors and the future growth prospects of the community as a whole. With ongoing development of commercial nanoplasmonic sensors and analytical models to interpret corresponding measurement data in the context of biologically relevant interactions, there is significant opportunity to utilize nanoplasmonic sensing strategies for not only fundamental biointerfacial science, but also translational science applications related to clinical medicine and pharmaceutical drug development among countless possibilities.
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Affiliation(s)
- Joshua A Jackman
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
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12
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Liu W, Yan J, Shi Y. High sensitivity visible light refractive index sensor based on high order mode Si 3N 4 photonic crystal nanobeam cavity. OPTICS EXPRESS 2017; 25:31739-31745. [PMID: 29245845 DOI: 10.1364/oe.25.031739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 12/01/2017] [Indexed: 06/07/2023]
Abstract
We design and demonstrate a suspended high sensitivity silicon nitride (Si3N4) photonic crystal (PhC) nanobeam cavity sensor. By utilizing the higher order mode, the optical field distribution in the analytes increases dramatically and the light matter interaction between the optical mode and the analytes has been enhanced. A high sensitivity of 321 nm/refractive index unit (nm/RIU) has been experimentally achieved at the wavelength ~700 nm which is the highest value reported so far for a resonator based sensor at such a short wavelength.
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13
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Li C, Ye R, Bouckaert J, Zurutuza A, Drider D, Dumych T, Paryzhak S, Vovk V, Bilyy RO, Melinte S, Li M, Boukherroub R, Szunerits S. Flexible Nanoholey Patches for Antibiotic-Free Treatments of Skin Infections. ACS APPLIED MATERIALS & INTERFACES 2017; 9:36665-36674. [PMID: 28956593 DOI: 10.1021/acsami.7b12949] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Despite the availability of different antibiotics, bacterial infections are still one of the leading causes of hospitalization and mortality. The clinical failure of antibiotic treatment is due to a general poor antibiotic penetration to bacterial infection sites as well as the development of antibiotic-resistant pathogens. In the case of skin infection, the wound is covered by exudate, making it impermeable to topical antibiotics. The development of a flexible patch allowing a rapid and highly efficient treatment of subcutaneous wound infections via photothermal irradiation is presented here. The skin patch combines the near-infrared photothermal properties of a gold nanohole array formed by self-assembly of colloidal structures on flexible polyimide films with that of reduced graphene oxide nanosheets for laser-gated pathogen inactivation. In vivo tests performed on mice with subcutaneous skin infection and treated with the photothermal skin patch show wound healing of the infected site, while nontreated areas result in necrotic muscular fibers and bacterial infiltrate. No loss in efficiency is observed upon multiple use of these patches during in vivo experiments because of their robustness.
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Affiliation(s)
- Chengnan Li
- Université de Lille, CNRS, Centrale Lille, ISEN, Université de Valenciennes, UMR 8520-IEMN, F-59000 Lille, France
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University , Jinan 250061, China
| | - Ran Ye
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain , 1348 Louvain-la-Neuve, Belgium
| | - Julie Bouckaert
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR 8576 du CNRS et Université de Lille, 50 Av. de Halley, 59658 Villeneuve d'Ascq, France
| | - Amaia Zurutuza
- Graphenea S.A., Tolosa Hiribidea 76, 20018 Donostia, San Sebastian, Spain
| | - Djamel Drider
- Institut Charles Viollette, Université de Lille1 , EA 7394 Lille, France
| | - Tetiana Dumych
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Solomiya Paryzhak
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Volodymyr Vovk
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Rostyslav O Bilyy
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Sorin Melinte
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain , 1348 Louvain-la-Neuve, Belgium
| | - Musen Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University , Jinan 250061, China
| | - Rabah Boukherroub
- Université de Lille, CNRS, Centrale Lille, ISEN, Université de Valenciennes, UMR 8520-IEMN, F-59000 Lille, France
| | - Sabine Szunerits
- Université de Lille, CNRS, Centrale Lille, ISEN, Université de Valenciennes, UMR 8520-IEMN, F-59000 Lille, France
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14
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Tu L, Li X, Bian S, Yu Y, Li J, Huang L, Liu P, Wu Q, Wang W. Label-free and real-time monitoring of single cell attachment on template-stripped plasmonic nano-holes. Sci Rep 2017; 7:11020. [PMID: 28887548 PMCID: PMC5591264 DOI: 10.1038/s41598-017-11383-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 08/23/2017] [Indexed: 12/19/2022] Open
Abstract
Leveraging microfluidics and nano-plasmonics, we present in this paper a new method employing a micro-nano-device that is capable of monitoring the dynamic cell-substrate attachment process at single cell level in real time without labeling. The micro-nano-device essentially has a gold thin film as the substrate perforated with periodic, near-cm2-area, template-stripped nano-holes, which generate plasmonic extraordinary optical transmission (EOT) with a high sensitivity to refractive index changes at the metal-dielectric interface. Using this device, we successfully demonstrated label-free and real-time monitoring of the dynamic cell attachment process for single mouse embryonic stem cell (C3H10) and human tumor cell (HeLa) by collecting EOT spectrum data during 3-hour on-chip culture. We further collected the EOT spectral shift data at the start and end points of measurement during 3-hour on-chip culture for 50 C3H10 and 50 HeLa cells, respectively. The experiment results show that the single cell attachment process of both HeLa and C3H10 cells follow the logistic retarded growth model, but with different kinetic parameters. Variations in spectral shift during the same culture period across single cells present new evidence for cell heterogeneity. The micro-nano-device provides a new, label-free, real-time, and sensitive, platform to investigate the cell adhesion kinetics at single cell level.
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Affiliation(s)
- Long Tu
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China
| | - Xuzhou Li
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China
| | - Shengtai Bian
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Yingting Yu
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Junxiang Li
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China
| | - Peng Liu
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Qiong Wu
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China.
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15
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Low-Cost and Rapid Fabrication of Metallic Nanostructures for Sensitive Biosensors Using Hot-Embossing and Dielectric-Heating Nanoimprint Methods. SENSORS 2017; 17:s17071548. [PMID: 28671600 PMCID: PMC5539740 DOI: 10.3390/s17071548] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 06/26/2017] [Accepted: 06/29/2017] [Indexed: 01/05/2023]
Abstract
We propose two approaches—hot-embossing and dielectric-heating nanoimprinting methods—for low-cost and rapid fabrication of periodic nanostructures. Each nanofabrication process for the imprinted plastic nanostructures is completed within several seconds without the use of release agents and epoxy. Low-cost, large-area, and highly sensitive aluminum nanostructures on A4 size plastic films are fabricated by evaporating aluminum film on hot-embossing nanostructures. The narrowest bandwidth of the Fano resonance is only 2.7 nm in the visible light region. The periodic aluminum nanostructure achieves a figure of merit of 150, and an intensity sensitivity of 29,345%/RIU (refractive index unit). The rapid fabrication is also achieved by using radio-frequency (RF) sensitive plastic films and a commercial RF welding machine. The dielectric-heating, using RF power, takes advantage of the rapid heating/cooling process and lower electric power consumption. The fabricated capped aluminum nanoslit array has a 5 nm Fano linewidth and 490.46 nm/RIU wavelength sensitivity. The biosensing capabilities of the metallic nanostructures are further verified by measuring antigen–antibody interactions using bovine serum albumin (BSA) and anti-BSA. These rapid and high-throughput fabrication methods can benefit low-cost, highly sensitive biosensors and other sensing applications.
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16
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Yuan Y, Panwar N, Yap SHK, Wu Q, Zeng S, Xu J, Tjin SC, Song J, Qu J, Yong KT. SERS-based ultrasensitive sensing platform: An insight into design and practical applications. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.02.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Highly Sensitive Aluminum-Based Biosensors using Tailorable Fano Resonances in Capped Nanostructures. Sci Rep 2017; 7:44104. [PMID: 28272519 PMCID: PMC5341018 DOI: 10.1038/srep44104] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 02/01/2017] [Indexed: 12/13/2022] Open
Abstract
Metallic nanostructure-based surface plasmon sensors are capable of real-time, label-free, and multiplexed detections for chemical and biomedical applications. Recently, the studies of aluminum-based biosensors have attracted a large attention because aluminum is a more cost-effective metal and relatively stable. However, the intrinsic properties of aluminum, having a large imaginary part of the dielectric function and a longer evanescent length, limit its sensing capability. Here we show that capped aluminum nanoslits fabricated on plastic films using hot embossing lithography can provide tailorable Fano resonances. Changing height of nanostructures and deposited metal film thickness modulated the transmission spectrum, which varied from Wood’s anomaly-dominant resonance, asymmetric Fano profile to surface plasmon-dominant resonance. For biolayer detections, the maximum surface sensitivity occurred at the dip of asymmetric Fano profile. The optimal Fano factor was close to −1.3. The wavelength and intensity sensitivities for surface thickness were up to 2.58 nm/nm and 90%/nm, respectively. The limit of detection (LOD) of thickness reached 0.018 nm. We attributed the enhanced surface sensitivity for capped aluminum nanoslits to a reduced evanescent length and sharp slope of the asymmetric Fano profile. The protein-protein interaction experiments verified the high sensitivity of capped nanostructures. The LOD was down to 236 fg/mL.
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18
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Ayoub AB, Nader AER, Saad M, Gan Q, Swillam M. Fiber-optic-based interferometric sensor. SPIE PROCEEDINGS 2017. [DOI: 10.1117/12.2251032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
| | | | - Mai Saad
- The American Univ. in Cairo (Egypt)
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19
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Doherty B, Csáki A, Thiele M, Zeisberger M, Schwuchow A, Kobelke J, Fritzsche W, Schmidt MA. Nanoparticle functionalised small-core suspended-core fibre - a novel platform for efficient sensing. BIOMEDICAL OPTICS EXPRESS 2017; 8:790-799. [PMID: 28270985 PMCID: PMC5330581 DOI: 10.1364/boe.8.000790] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/25/2016] [Accepted: 12/27/2016] [Indexed: 05/27/2023]
Abstract
Detecting small quantities of specific target molecules is of major importance within bioanalytics for efficient disease diagnostics. One promising sensing approach relies on combining plasmonically-active waveguides with microfluidics yielding an easy-to-use sensing platform. Here we introduce suspended-core fibres containing immobilised plasmonic nanoparticles surrounding the guiding core as a concept for an entirely integrated optofluidic platform for efficient refractive index sensing. Due to the extremely small optical core and the large adjacent microfluidic channels, over two orders of magnitude of nanoparticle coverage densities have been accessed with millimetre-long sample lengths showing refractive index sensitivities of 170 nm/RIU for aqueous analytes where the fibre interior is functionalised by gold nanospheres. Our concept represents a fully integrated optofluidic sensing system demanding small sample volumes and allowing for real-time analyte monitoring, both of which are highly relevant within invasive bioanalytics, particularly within molecular disease diagnostics and environmental science.
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Affiliation(s)
- Brenda Doherty
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
- Abbe Center of Photonics, Friedrich-Schiller-University, Max-Wien-Platz, 1, 07743 Jena, Germany
| | - Andrea Csáki
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Matthias Thiele
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Matthias Zeisberger
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Anka Schwuchow
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Jens Kobelke
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Wolfgang Fritzsche
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
| | - Markus A. Schmidt
- Leibniz Institute of Photonic Technology e.V., Albert-Einstein-Str. 9, 07745 Jena, Germany
- Abbe Center of Photonics, Friedrich-Schiller-University, Max-Wien-Platz, 1, 07743 Jena, Germany
- Otto Schott Institute of Material Research, Fraunhoferstr.6, Friedrich-Schiller-University, 07743 Jena, Germany
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20
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Lee KL, Chang CC, You ML, Pan MY, Wei PK. Enhancing the Surface Sensitivity of Metallic Nanostructures Using Oblique-Angle-Induced Fano Resonances. Sci Rep 2016; 6:33126. [PMID: 27609431 PMCID: PMC5016831 DOI: 10.1038/srep33126] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 08/22/2016] [Indexed: 11/18/2022] Open
Abstract
Surface sensitivity is an important factor that determines the minimum amount of biomolecules detected by surface plasmon resonance (SPR) sensors. We propose the use of oblique-angle-induced Fano resonances caused by two-mode coupling or three-mode coupling between the localized SPR mode and long-range surface plasmon polariton modes to increase the surface sensitivities of silver capped nanoslits. The results indicate that the coupled resonance between the split SPR (−kSPR) and cavity modes (two-mode coupling) has a high wavelength sensitivity for small-angle incidence (2°) due to its short decay length. Additionally, three-mode coupling between the split SPR (−kSPR), substrate (+kSub) and cavity modes has a high intensity sensitivity for large-angle incidence due to its short decay length, large resonance slope and enhanced transmission intensity. Compared to the wavelength measurement, the intensity measurement has a lower detectable (surface) concentration below 1 ng/ml (0.14 pg/mm2) and is reduced by at least 3 orders of magnitude. In addition, based on the calibration curve and current system noise, a theoretical detection limit of 2.73 pg/ml (0.38 fg/mm2) can be achieved. Such a surface concentration is close to that of prism-based SPR with phase measurement (0.1–0.2 fg/mm2 under a phase shift of 5 mdeg).
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Affiliation(s)
- Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei 11529, Taiwan
| | - Chia-Chun Chang
- Department of Optoelectronics, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Meng-Lin You
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei 11529, Taiwan
| | - Ming-Yang Pan
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei 11529, Taiwan.,Institute of Photonics Technologies, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Pei-Kuen Wei
- Research Center for Applied Sciences, Academia Sinica, 128, section 2, Academia Road, Nangkang, Taipei 11529, Taiwan.,Department of Optoelectronics, National Taiwan Ocean University, Keelung 20224, Taiwan.,Institute of Biophotonics, National Yang-Ming University, Taipei, Taiwan
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21
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Lee KL, You ML, Tsai CL, Hung CY, Hsieh SY, Wei PK. Visualization of biosensors using enhanced surface plasmon resonances in capped silver nanostructures. Analyst 2016; 141:974-80. [PMID: 26670680 DOI: 10.1039/c5an02063h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We propose a method and optical design for direct visualization of label-free detection. The system, similar to a tiny spectral analyzer, is composed of a nanostructure-based surface plasmon resonance chip, linear polarizer and 532 nm laser light source. The full-width-at-half-maximum bandwidths of the enhanced surface plasmon resonances are about 5 nm. The distribution of the transmitted light from these arrays comprises a spectral image on the chip. The qualitative and quantitative analyses of the analyte can be conducted by observing the spot shift on the chip. We tested the sensing capability of the chip. The detectable surface mass density with the naked eye is about 0.476 μg cm(-2). In addition, antigen-antibody interaction experiments are conducted to verify the surface binding measurements. A monolayer protein attached on the chip can be directly observed and the concentration levels of the analyte can be estimated with the naked eye. Such plasmonic biochips can benefit sensing applications in point-of-care diagnostics.
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Affiliation(s)
- Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan.
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22
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Vannahme C, Sørensen KT, Gade C, Dufva M, Kristensen A. Refractometric monitoring of dissolution and fluid flow with distributed feedback dye laser sensor. OPTICS EXPRESS 2015; 23:6562-6568. [PMID: 25836874 DOI: 10.1364/oe.23.006562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Monitoring the dissolution of solid material in liquids and monitoring of fluid flow is of significant interest for applications in chemistry, food production, medicine, and especially in the fields of microfluidics and lab on a chip. Here, real-time refractometric monitoring of dissolution and fast fluid flow with DFB dye laser sensors with an optical imaging spectroscopy setup is presented. The dye laser sensors provide both low detection limits and high spatial resolution. It is demonstrated how the materials NaCl, sucrose, and bovine serum albumin show characteristic dissolution patterns. The unique feature of the presented method is a high frame rate of up to 20 Hz, which is proven to enable the monitoring of fast flow of a sucrose solution jet into pure water.
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23
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Ultrasensitive biosensors using enhanced Fano resonances in capped gold nanoslit arrays. Sci Rep 2015; 5:8547. [PMID: 25708955 PMCID: PMC4338429 DOI: 10.1038/srep08547] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 01/23/2015] [Indexed: 12/01/2022] Open
Abstract
Nanostructure-based sensors are capable of sensitive and label-free detection for biomedical applications. However, plasmonic sensors capable of highly sensitive detection with high-throughput and low-cost fabrication techniques are desirable. We show that capped gold nanoslit arrays made by thermal-embossing nanoimprint method on a polymer film can produce extremely sharp asymmetric resonances for a transverse magnetic-polarized wave. An ultrasmall linewidth is formed due to the enhanced Fano coupling between the cavity resonance mode in nanoslits and surface plasmon resonance mode on periodic metallic surface. With an optimal slit length and width, the full width at half-maximum bandwidth of the Fano mode is only 3.68 nm. The wavelength sensitivity is 926 nm/RIU for 60-nm-width and 1,000-nm-period nanoslits. The figure of merit is up to 252. The obtained value is higher than the theoretically estimated upper limits of the prism-coupling SPR sensors and the previously reported record high figure-of-merit in array sensors. In addition, the structure has an ultrahigh intensity sensitivity up to 48,117%/RIU.
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24
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Tokel O, Inci F, Demirci U. Advances in plasmonic technologies for point of care applications. Chem Rev 2014; 114:5728-52. [PMID: 24745365 PMCID: PMC4086846 DOI: 10.1021/cr4000623] [Citation(s) in RCA: 221] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Onur Tokel
- Demirci
Bio-Acoustic-MEMS in Medicine (BAMM) Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical
School, Cambridge, Massachusetts 02139, United States
| | - Fatih Inci
- Demirci
Bio-Acoustic-MEMS in Medicine (BAMM) Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical
School, Cambridge, Massachusetts 02139, United States
- Demirci
Bio-Acoustic-MEMS in Medicine (BAMM) Laboratory, Stanford University School of Medicine, Canary Center at Stanford
for Cancer Early Detection, Palo
Alto, California 94304, United States
| | - Utkan Demirci
- Demirci
Bio-Acoustic-MEMS in Medicine (BAMM) Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical
School, Cambridge, Massachusetts 02139, United States
- Division of Infectious Diseases, Brigham
and Women’s Hospital, Harvard Medical
School, Boston, Massachusetts 02115, United States
- Harvard-MIT
Health Sciences and Technology, Cambridge, Massachusetts 02139, United States
- Demirci
Bio-Acoustic-MEMS in Medicine (BAMM) Laboratory, Stanford University School of Medicine, Canary Center at Stanford
for Cancer Early Detection, Palo
Alto, California 94304, United States
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25
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Zhang J, Zhang X, Su X, Lu Y, Feng S, Wang L. Sensitivity enhancement through overlapping simultaneously excited Fano resonance modes of metallic-photonic-crystal sensors. OPTICS EXPRESS 2014; 22:3296-3305. [PMID: 24663620 DOI: 10.1364/oe.22.003296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We investigated enhancement of sensitivity of sensors based on metallic photonic crystals through tuning the thickness of the waveguide layer by pulsed laser deposition. Thicker waveguides made of InGaZnO allow double resonance of Fano coupling modes due to plasmonic-photonic interactions. Tuning the angle of incidence enables overlap between these doubly resonant modes, which induces much enlarged and spectrally narrowed sensor signals, leading to significantly enhanced sensitivity of the sensor device. The thickness of the waveguide layer is found to be a crucial structural parameter to improve sensitivity of the MPC sensors.
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26
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Barik A, Otto LM, Yoo D, Jose J, Johnson T, Oh SH. Dielectrophoresis-enhanced plasmonic sensing with gold nanohole arrays. NANO LETTERS 2014; 14:2006-12. [PMID: 24646075 PMCID: PMC4083195 DOI: 10.1021/nl500149h] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/18/2014] [Indexed: 05/17/2023]
Abstract
We experimentally demonstrate dielectrophoretic concentration of biological analytes on the surface of a gold nanohole array, which concurrently acts as a nanoplasmonic sensor and gradient force generator. The combination of nanohole-enhanced dielectrophoresis, electroosmosis, and extraordinary optical transmission through the periodic gold nanohole array enables real-time label-free detection of analyte molecules in a 5 μL droplet using concentrations as low as 1 pM within a few minutes, which is more than 1000 times faster than purely diffusion-based binding. The nanohole-based optofluidic platform demonstrated here is straightforward to construct, applicable to both charged and neutral molecules, and performs a novel function that cannot be accomplished using conventional surface plasmon resonance sensors.
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Affiliation(s)
- Avijit Barik
- Department of Electrical and Computer
Engineering and Department of Biomedical Engineering, University
of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Lauren M. Otto
- Department of Electrical and Computer
Engineering and Department of Biomedical Engineering, University
of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Daehan Yoo
- Department of Electrical and Computer
Engineering and Department of Biomedical Engineering, University
of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jincy Jose
- Department of Electrical and Computer
Engineering and Department of Biomedical Engineering, University
of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Timothy
W. Johnson
- Department of Electrical and Computer
Engineering and Department of Biomedical Engineering, University
of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Sang-Hyun Oh
- Department of Electrical and Computer
Engineering and Department of Biomedical Engineering, University
of Minnesota, Minneapolis, Minnesota 55455, United States
- E-mail:
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27
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Gao Y, Xin Z, Zeng B, Gan Q, Cheng X, Bartoli FJ. Plasmonic interferometric sensor arrays for high-performance label-free biomolecular detection. LAB ON A CHIP 2013; 13:4755-4764. [PMID: 24173621 DOI: 10.1039/c3lc50863c] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A plasmonic interferometric biosensor that consists of arrays of circular aperture-groove nanostructures patterned on a gold film for phase-sensitive biomolecular detection is demonstrated. The phase and amplitude of interfering surface plasmon polaritons (SPPs) in the proposed device can be effectively engineered by structural tuning, providing flexible and efficient control over the plasmon line shape observed through SPP interference. Spectral fringes with high contrast, narrow linewidth, and large amplitude have been experimentally measured and permit the sensitive detection of protein surface coverage as low as 0.4 pg mm(-2). This sensor resolution compares favorably with commercial prism-based surface plasmon resonance systems (0.1 pg mm(-2)) but is achieved here using a significantly simpler collinear transmission geometry, a miniaturized sensor footprint, and a low-cost compact spectrometer. Furthermore, we also demonstrate superior sensor performance using the intensity interrogation method, which can be combined with CCD imaging to upscale our platform to high-throughput array sensing. A novel low-background interferometric sensing scheme yields a high sensing figure of merit (FOM*) of 146 in the visible region, surpassing that of previous plasmonic biosensors and facilitating ultrasensitive high-throughput detection.
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Affiliation(s)
- Yongkang Gao
- Electrical and Computer Engineering Department, Lehigh University, Bethlehem, PA 18015, USA.
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28
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Niu L, Cheng K, Wu Y, Wang T, Shi Q, Liu D, Du Z. Sensitivity improved plasmonic gold nanoholes array biosensor by coupling quantum-dots for the detection of specific biomolecular interactions. Biosens Bioelectron 2013; 50:137-42. [DOI: 10.1016/j.bios.2013.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/28/2013] [Accepted: 06/10/2013] [Indexed: 12/31/2022]
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29
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Escobedo C, Chou YW, Rahman M, Duan X, Gordon R, Sinton D, Brolo AG, Ferreira J. Quantification of ovarian cancer markers with integrated microfluidic concentration gradient and imaging nanohole surface plasmon resonance. Analyst 2013; 138:1450-8. [PMID: 23344016 DOI: 10.1039/c3an36616b] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nanohole array-based biosensors integrated with a microfluidic concentration gradient generator were used for imaging detection and quantification of ovarian cancer markers. Calibration curves based on controlled concentrations of the analyte were created using a microfluidic stepped diffusive mixing scheme. Quantification of samples with unknown concentration of analyte was achieved by image-intensity comparison with the calibration curves. The biosensors were first used to detect the immobilization of ovarian cancer marker antibodies, and subsequently applied for the quantification of the ovarian cancer marker r-PAX8 (with a limit of detection of about 5 nM and a dynamic range from 0.25 to 9.0 μg.mL(-1)). The proposed biosensor demonstrated the ability of self-generating calibration curves on-chip in an integrated microfluidic platform, representing a further step towards the development of comprehensive lab-on-chip biomedical diagnostics based on nanohole array technology.
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Affiliation(s)
- Carlos Escobedo
- ETH Zurich, Department of Biosystems Science and Engineering, Mattenstrasse 26, Basel, 4058, Switzerland.
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30
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Dahlin AB, Wittenberg NJ, Höök F, Oh SH. Promises and Challenges of Nanoplasmonic Devices for Refractometric Biosensing. NANOPHOTONICS 2013; 2:83-101. [PMID: 24159429 PMCID: PMC3804425 DOI: 10.1515/nanoph-2012-0026] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Optical biosensors based on surface plasmon resonance (SPR) in metallic thin films are currently standard tools for measuring molecular binding kinetics and affinities - an important task for biophysical studies and pharmaceutical development. Motivated by recent progress in the design and fabrication of metallic nanostructures, such as nanoparticles or nanoholes of various shapes, researchers have been pursuing a new generation of biosensors harnessing tailored plasmonic effects in these engineered nanostructures. Nanoplasmonic devices, while demanding nanofabrication, offer tunability with respect to sensor dimension and physical properties, thereby enabling novel biological interfacing opportunities and extreme miniaturization. Here we provide an integrated overview of refractometric biosensing with nanoplasmonic devices and highlight some recent examples of nanoplasmonic sensors capable of unique functions that are difficult to accomplish with conventional SPR. For example, since the local field strength and spatial distribution can be readily tuned by varying the shape and arrangement of nanostructures, biomolecular interactions can be controlled to occur in regions of high field strength. This may improve signal-to-noise and also enable sensing a small number of molecules. Furthermore, the nanoscale plasmonic sensor elements may, in combination with nanofabrication and materials-selective surface-modifications, make it possible to merge affinity biosensing with nanofluidic liquid handling.
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Affiliation(s)
- Andreas B. Dahlin
- Chalmers University of Technology, Division of Bionanophotonics, Department of Applied Physics, Fysikgränd 3, 41296, Göteborg, Sweden
| | - Nathan J. Wittenberg
- Department of Electrical and Computer Engineering, Laboratory of Nanostructures and Biosensing, University of Minnesota, Twin Cities, 200 Union St. S.E., Minneapolis, MN 55455, U.S.A
| | - Fredrik Höök
- Chalmers University of Technology, Division of Bionanophotonics, Department of Applied Physics, Fysikgränd 3, 41296, Göteborg, Sweden
| | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, Laboratory of Nanostructures and Biosensing, University of Minnesota, Twin Cities, 200 Union St. S.E., Minneapolis, MN 55455, U.S.A
- Department of Biophysics and Chemical Biology, Seoul National University, Seoul 151-747, Korea
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31
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Kumar S, Wittenberg NJ, Oh SH. Nanopore-induced spontaneous concentration for optofluidic sensing and particle assembly. Anal Chem 2012; 85:971-7. [PMID: 23214989 DOI: 10.1021/ac302690w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Metallic nanopore arrays have emerged as optofluidic platforms with multifarious sensing and analytical capabilities such as label-free surface plasmon resonance (SPR) sensing of molecular binding interactions and surface-enhanced Raman spectroscopy (SERS). However, directed delivery of analytes through open nanopores using traditional methods such as external electric fields or pressure gradients still remains difficult. We demonstrate that nanopore arrays have an intrinsic ability to promote flow through them via capillary flow and evaporation. This passive "nano-drain" mechanism is utilized to concentrate biomolecules on the surface of nanopores for improved detection sensitivity or create ordered nanoscale arrays of beads and liposomes. Without using any external pump or fluidic interconnects, we can concentrate and detect the presence of less than a femtomole of streptavidin in 10 μL of sample using fluorescence imaging. Liposome nanoarrays are also prepared in less than 5 min and used to detect lipid-protein interactions. We also demonstrate label-free SPR detection of analytes using metallic nanopore arrays. This method provides a fast, simple, transportable, and small-volume platform for labeled as well as label-free plasmonic analysis while improving the detection time and sensitivity.
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Affiliation(s)
- Shailabh Kumar
- Laboratory of Nanostructures and Biosensing, Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA
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32
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Lindquist NC, Johnson TW, Jose J, Otto LM, Oh SH. Ultrasmooth metallic films with buried nanostructures for backside reflection-mode plasmonic biosensing. ANNALEN DER PHYSIK 2012; 524:687-696. [PMID: 24159227 PMCID: PMC3804426 DOI: 10.1002/andp.201200144] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 09/03/2012] [Indexed: 05/27/2023]
Abstract
We present a new plasmonic device architecture based on ultrasmooth metallic surfaces with buried plasmonic nanostructures. Using template-stripping techniques, ultrathin gold films with less than 5 Å surface roughness are optically coupled to an arbitrary arrangement of buried metallic gratings, rings, and nanodots. As a prototypical example, we present linear plasmonic gratings buried under an ultrasmooth 20 nm thick gold surface for biosensing. The optical illumination and collection are completely decoupled from the microfluidic delivery of liquid samples due to the backside, reflection-mode geometry. This allows for sensing with opaque or highly scattering liquids. With the buried nanostructure design, we maintain high sensitivity and decoupled backside (reflective) optical access as with traditional prism-based surface plasmon resonance (SPR) sensors. In addition, we also gain the benefits offered by nanoplasmonic sensors such as spectral tunability and high-resolution, wide-field SPR imaging with normal-incidence epi-illumination that is simple to construct and align. Beyond sensing, our buried plasmonic nanostructures with ultrasmooth metallic surfaces can benefit nanophotonic waveguides, surface-enhanced spectroscopy, nanolithography, and optical trapping.
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Affiliation(s)
| | | | - Jincy Jose
- Laboratory of Nanostructures and Biosensing, Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 USA
| | - Lauren M. Otto
- Laboratory of Nanostructures and Biosensing, Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 USA
| | - Sang-Hyun Oh
- Laboratory of Nanostructures and Biosensing, Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 USA
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33
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López-Tejeira F, Paniagua-Domínguez R, Sánchez-Gil JA. High-performance nanosensors based on plasmonic Fano-like interference: probing refractive index with individual nanorice and nanobelts. ACS NANO 2012; 6:8989-8996. [PMID: 22953763 DOI: 10.1021/nn303059s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We propose two different configurations for which the Fano-like interference of longitudinal plasmon resonances occurring at individual metallic nanoparticles can be easily employed in refractive index sensing: a colloidal suspension of nanospheroids (nanorice) and a single nanowire with rectangular cross section (nanobelt) on top of a dielectric substrate. We numerically study the performance of the two in terms of their figures of merit, which are calculated under realistic conditions. For the case of nanorice, we explicitly incorporate the effect of size dispersity into the simulations. Our obtained results show that the application of the proposed configurations seems to be not only feasible but also very promising.
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Affiliation(s)
- Fernando López-Tejeira
- Instituto de Estructura de la Materia (IEM-CSIC), Consejo Superior de Investigaciones Científicas, Serrano 121, 28006 Madrid, Spain.
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34
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Lee SH, Lindquist NC, Wittenberg NJ, Jordan LR, Oh SH. Real-time full-spectral imaging and affinity measurements from 50 microfluidic channels using nanohole surface plasmon resonance. LAB ON A CHIP 2012; 12:3882-90. [PMID: 22895607 PMCID: PMC3447124 DOI: 10.1039/c2lc40455a] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
With recent advances in high-throughput proteomics and systems biology, there is a growing demand for new instruments that can precisely quantify a wide range of receptor-ligand binding kinetics in a high-throughput fashion. Here we demonstrate a surface plasmon resonance (SPR) imaging spectroscopy instrument capable of simultaneously extracting binding kinetics and affinities from 50 parallel microfluidic channels. The instrument utilizes large-area (~ cm(2)) metallic nanohole arrays as SPR sensing substrates and combines a broadband light source, a high-resolution imaging spectrometer and a low-noise CCD camera to extract spectral information from every channel in real time with a refractive index resolution of 7.7 × 10(-6) refractive index units. To demonstrate the utility of our instrument for quantifying a wide range of biomolecular interactions, each parallel microfluidic channel is coated with a biomimetic supported lipid membrane containing ganglioside (GM1) receptors. The binding kinetics of cholera toxin b (CTX-b) to GM1 are then measured in a single experiment from 50 channels. By combining the highly parallel microfluidic device with large-area periodic nanohole array chips, our SPR imaging spectrometer system enables high-throughput, label-free, real-time SPR biosensing, and its full-spectral imaging capability combined with nanohole arrays could enable integration of SPR imaging with concurrent surface-enhanced Raman spectroscopy.
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Affiliation(s)
- Si Hoon Lee
- Laboratory of Nanostructures and Biosensing, University of Minnesota, Minneapolis, MN 55455, United States
| | | | - Nathan J. Wittenberg
- Laboratory of Nanostructures and Biosensing, University of Minnesota, Minneapolis, MN 55455, United States
| | - Luke R. Jordan
- Laboratory of Nanostructures and Biosensing, University of Minnesota, Minneapolis, MN 55455, United States
| | - Sang-Hyun Oh
- Laboratory of Nanostructures and Biosensing, University of Minnesota, Minneapolis, MN 55455, United States
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35
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Lee KL, Chih MJ, Shi X, Ueno K, Misawa H, Wei PK. Improving surface plasmon detection in gold nanostructures using a multi-polarization spectral integration method. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:OP253-OP259. [PMID: 22807225 DOI: 10.1002/adma.201202194] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Indexed: 06/01/2023]
Affiliation(s)
- Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica, No. 128, Section 2, Academic Road, Taipei 11529, Taiwan
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36
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Zhang X, Feng S, Zhang J, Zhai T, Liu H, Pang Z. Sensors Based on Plasmonic-Photonic Coupling in Metallic Photonic Crystals. SENSORS 2012. [PMCID: PMC3478828 DOI: 10.3390/s120912082] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
An optical sensor based on the coupling between the plasmonic and photonic resonance modes in metallic photonic crystals is investigated. Large-area metallic photonic crystals consisting of periodically arranged gold nanostructures with dimensions down to sub-100 nm are fabricated using solution-processible gold nanoparticles in combination with interference lithography or interference ablation, which introduces a variety of fabrication techniques for the construction of this kind of sensor device. Sensitivity of the plasmonic response of the gold nanostructures to the changes in the environmental refractive index is enhanced through the coupling between the narrow-band photonic resonance mode and the relatively broad-band plasmon resonance, which is recognized as a Fano-like effect and is utilized to explore sensors. Theoretical modeling shows the characterization and the optimization of the sensitivity of this kind of sensor device. Theoretical and experimental results are demonstrated for the approaches to improve the sensitivity of the sensor device.
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Affiliation(s)
- Xinping Zhang
- Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; E-Mails: (J.Z.); (T.Z.); (H.L.); (Z.P.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-10-6739-6371; Fax: +86-10-6739-1738
| | - Shengfei Feng
- Department of Physics, Capital Normal University, Beijing 100048, China; E-Mail:
| | - Jian Zhang
- Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; E-Mails: (J.Z.); (T.Z.); (H.L.); (Z.P.)
| | - Tianrui Zhai
- Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; E-Mails: (J.Z.); (T.Z.); (H.L.); (Z.P.)
| | - Hongmei Liu
- Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; E-Mails: (J.Z.); (T.Z.); (H.L.); (Z.P.)
| | - Zhaoguang Pang
- Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, China; E-Mails: (J.Z.); (T.Z.); (H.L.); (Z.P.)
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37
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Wittenberg NJ, Im H, Xu X, Wootla B, Watzlawik J, Warrington AE, Rodriguez M, Oh SH. High-affinity binding of remyelinating natural autoantibodies to myelin-mimicking lipid bilayers revealed by nanohole surface plasmon resonance. Anal Chem 2012; 84:6031-9. [PMID: 22762372 PMCID: PMC3417152 DOI: 10.1021/ac300819a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Multiple sclerosis is a progressive neurological disorder that results in the degradation of myelin sheaths that insulate axons in the central nervous system. Therefore promotion of myelin repair is a major thrust of multiple sclerosis treatment research. Two mouse monoclonal natural autoantibodies, O1 and O4, promote myelin repair in several mouse models of multiple sclerosis. Natural autoantibodies are generally polyreactive and predominantly of the IgM isotype. The prevailing paradigm is that because they are polyreactive, these antibodies bind antigens with low affinities. Despite their wide use in neuroscience and glial cell research, however, the affinities and kinetic constants of O1 and O4 antibodies have not been measured to date. In this work, we developed a membrane biosensing platform based on surface plasmon resonance in gold nanohole arrays with a series of surface modification techniques to form myelin-mimicking lipid bilayer membranes to measure both the association and dissociation rate constants for O1 and O4 antibodies binding to their myelin lipid antigens. The ratio of rate constants shows that O1 and O4 bind to galactocerebroside and sulfated galactocerebroside, respectively, with unusually small apparent dissociation constants (K(D) ≈ 0.9 nM) for natural autoantibodies. This is approximately one to 2 orders of magnitude lower than typically observed for the highest affinity natural autoantibodies. We propose that the unusually high affinity of O1 and O4 to their targets in myelin contributes to the mechanism by which they signal oligodendrocytes and induce central nervous system repair.
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Affiliation(s)
- Nathan J. Wittenberg
- Laboratory of Nanostructures and Biosensing, Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 USA
| | - Hyungsoon Im
- Laboratory of Nanostructures and Biosensing, Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 USA
| | - Xiaohua Xu
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Bharath Wootla
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Jens Watzlawik
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
- Immunology, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Arthur E. Warrington
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Moses Rodriguez
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
- Immunology, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
| | - Sang-Hyun Oh
- Laboratory of Nanostructures and Biosensing, Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 USA
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38
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Lee KL, Chen PW, Wu SH, Huang JB, Yang SY, Wei PK. Enhancing surface plasmon detection using template-stripped gold nanoslit arrays on plastic films. ACS NANO 2012; 6:2931-2939. [PMID: 22452266 DOI: 10.1021/nn3001142] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Nanostructure-based sensors are capable of sensitive and label-free detection for biomedical applications. However, high-throughput and low-cost fabrication techniques are the main issues which should be addressed. In this study, chip-based nanostructures for intensity-sensitive detection were fabricated and tested using a thermal-annealing-assisted template-stripping method. Large-area uniform nanoslit arrays with a 500 nm period and various slit widths, from 30 to 165 nm, were made on plastic films. A transverse magnetic-polarized wave in these gold nanostructures generated sharp and asymmetric Fano resonances in transmission spectra. The full width at half-maximum bandwidth decreased with the decrease of the slit width. The narrowest bandwidth was smaller than 10 nm. Compared to nanoslit arrays on glass substrates using electron-beam lithography, the proposed chip has a higher intensity sensitivity up to 10367%/RIU (refractive index unit) and reaches a figure of merit up to 55. The higher intensity sensitivity for the template-stripped nanostructure is attributed to a smoother gold surface and larger grain sizes on the plastic film, which reduces the surface plasmon propagation loss.
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Affiliation(s)
- Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica , 128, section 2, Academia Road, Nangkang, Taipei 11529, Taiwan
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39
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Yu CC, Ho KH, Chen HL, Chuang SY, Tseng SC, Su WF. Using the nanoimprint-in-metal method to prepare corrugated metal structures for plasmonic biosensors through both surface plasmon resonance and index-matching effects. Biosens Bioelectron 2012; 33:267-73. [DOI: 10.1016/j.bios.2012.01.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 01/03/2012] [Accepted: 01/17/2012] [Indexed: 10/14/2022]
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40
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Lindquist NC, Nagpal P, McPeak KM, Norris DJ, Oh SH. Engineering metallic nanostructures for plasmonics and nanophotonics. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2012; 75:036501. [PMID: 22790420 PMCID: PMC3396886 DOI: 10.1088/0034-4885/75/3/036501] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Metallic nanostructures now play an important role in many applications. In particular, for the emerging fields of plasmonics and nanophotonics, the ability to engineer metals on nanometric scales allows the development of new devices and the study of exciting physics. This review focuses on top-down nanofabrication techniques for engineering metallic nanostructures, along with computational and experimental characterization techniques. A variety of current and emerging applications are also covered.
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Affiliation(s)
- Nathan C Lindquist
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, U.S.A
- Physics Department, Bethel University, St. Paul, MN, U.S.A
| | | | - Kevin M McPeak
- Optical Materials Engineering Laboratory, ETH Zürich, Zürich, Switzerland
| | - David J Norris
- Optical Materials Engineering Laboratory, ETH Zürich, Zürich, Switzerland
| | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, U.S.A
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41
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Tan Q, Roussey M, Cosentino A, Herzig HP. In-plane illuminated metallic annular aperture array for sensing application. OPTICS LETTERS 2012; 37:635-637. [PMID: 22344131 DOI: 10.1364/ol.37.000635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We propose here an application to sensing of annular aperture arrays (AAA). We theoretically investigate the optical properties of the reflective AAA device when illuminated in-plane. The cavity presents almost perfect absorption due to the waveguide mode resonance with strong field localization in the aperture. Additionally, the reflective cavity is modeled to be available for on-chip sensing with a theoretically expected sensitivity of 764 nm/RIU(refractive index unit).
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Affiliation(s)
- Qing Tan
- Ecole Polytechnique Fédérale de Lausanne, Institute of Microengineering, Optics & Photonics Technology Laboratory, Neuchâtel, Switzerland.
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42
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Im H, Sutherland JN, Maynard JA, Oh SH. Nanohole-based surface plasmon resonance instruments with improved spectral resolution quantify a broad range of antibody-ligand binding kinetics. Anal Chem 2012; 84:1941-7. [PMID: 22235895 DOI: 10.1021/ac300070t] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We demonstrate an affordable low-noise surface plasmon resonance (SPR) instrument based on extraordinary optical transmission (EOT) in metallic nanohole arrays and quantify a broad range of antibody-ligand binding kinetics with equilibrium dissociation constants ranging from 200 pM to 40 nM. This nanohole-based SPR instrument is straightforward to construct, align, and operate, since it is built around a standard microscope and a portable fiber-optic spectrometer. The measured refractive index resolution of this platform is 3.1 × 10(-6) without on-chip cooling, which is among the lowest reported for SPR sensors based on EOT. This is accomplished via rapid full-spectrum acquisition in 10 ms followed by frame averaging of the EOT spectra, which is made possible by the production of template-stripped gold nanohole arrays with homogeneous optical properties over centimeter-sized areas. Sequential SPR measurements are performed using a 12-channel microfluidic flow cell after optimizing surface modification protocols and antibody injection conditions to minimize mass-transport artifacts. The immobilization of a model ligand, the protective antigen of anthrax on the gold surface, is monitored in real-time with a signal-to-noise ratio of ~860. Subsequently, real-time binding kinetic curves were measured quantitatively between the antigen and a panel of small, 25 kDa single-chain antibodies at concentrations down to 1 nM. These results indicate that nanohole-based SPR instruments have potential for quantitative antibody screening and as a general-purpose platform for integrating SPR sensors with other bioanalytical tools.
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Affiliation(s)
- Hyungsoon Im
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA
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43
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Zhang X, Li Z, Ye S, Wu S, Zhang J, Cui L, Li A, Wang T, Li S, Yang B. Elevated Ag nanohole arrays for high performance plasmonic sensors based on extraordinary optical transmission. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30525a] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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44
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Lee KL, Wu SH, Lee CW, Wei PK. Sensitive biosensors using Fano resonance in single gold nanoslit with periodic grooves. OPTICS EXPRESS 2011; 19:24530-24539. [PMID: 22109480 DOI: 10.1364/oe.19.024530] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Chip-based biosensors for sensitive label-free detection were fabricated and tested by using Fano-type resonant nanostructures. The sensor was composed of a 190 nm-thick gold nanoslit surrounded by 600-nm-period grooves. Transverse-magnetic polarized wave in these gold nanostructures generated asymmetrical resonant spectra due to the interference of broad-band cavity resonance in the single slit and narrow-band surface plasmon resonance on the periodic grooves. Compared to nanoslit arrays, such Fano-type sensor has a sharper resonance which yields a figure of merit up to 48. In addition, the crossed talk between sensing elements is reduced due to the Bragg reflection of the periodic grooves. A smaller detection separation down to 10 μm width was achieved. An antigen-antibody interaction experiment in aqueous environment verified the detection sensitivity in surface binding event.
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Affiliation(s)
- Kuang-Li Lee
- Research Center for Applied Sciences, Academia Sinica, No. 128, Section 2, Academic Road, Taipei, 11529, Taiwan
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45
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Kemling JW, Qavi AJ, Bailey RC, Suslick KS. Nanostructured Substrates for Optical Sensing. J Phys Chem Lett 2011; 2:2934-2944. [PMID: 22174955 PMCID: PMC3235654 DOI: 10.1021/jz201147g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Sensors that change color have the advantages of versatility, ease of use, high sensitivity, and low cost. The recent development of optically based chemical sensing platforms has increasingly employed substrates manufactured with advanced processing or fabrication techniques to provide precise control over shape and morphology of the sensor micro- and nano-structure. New sensors have resulted with improved capabilities for a number of sensing applications, including the detection of biomolecules and environmental monitoring. This perspective focuses on recent optical sensor devices that utilize nanostructured substrates.
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46
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Fan X, White IM. Optofluidic Microsystems for Chemical and Biological Analysis. NATURE PHOTONICS 2011; 5:591-597. [PMID: 22059090 PMCID: PMC3207487 DOI: 10.1038/nphoton.2011.206] [Citation(s) in RCA: 406] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Optofluidics - the synergistic integration of photonics and microfluidics - has recently emerged as a new analytical field that provides a number of unique characteristics for enhanced sensing performance and simplification of microsystems. In this review, we describe various optofluidic architectures developed in the past five years, emphasize the mechanisms by which optofluidics enhances bio/chemical analysis capabilities, including sensing and the precise control of biological micro/nanoparticles, and envision new research directions to which optofluidics leads.
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Affiliation(s)
- Xudong Fan
- Biomedical Engineering Department, University of Michigan, Ann Arbor, MI 48109, USA
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47
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Wittenberg NJ, Im H, Johnson TW, Xu X, Warrington AE, Rodriguez M, Oh SH. Facile assembly of micro- and nanoarrays for sensing with natural cell membranes. ACS NANO 2011; 5:7555-64. [PMID: 21842844 PMCID: PMC3183111 DOI: 10.1021/nn202554t] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Microarray technology has facilitated many powerful high-throughput studies in the fields of genetics and proteomics, among others. However, preparation of microarrays composed of cell-derived membranes with embedded receptors has proven difficult. Here we describe a new method for forming microarrays composed of synthetic lipid vesicles and natural cell membranes. The method is based upon assembly of vesicles and natural membranes into recessed micro- and nanowells and using a polydimethylsiloxane (PDMS) block as a "squeegee." This method is used to assemble phospholipid vesicles into arrays with micrometer and nanoscale dimensions. Native myelin and neuronal lipid raft arrays are also formed in 30 min or less. We show the natural membrane arrays can be used for sensing lipid-protein interactions by detecting cholera toxin binding to ganglioside GM1 in neuronal lipid rafts. In multicomponent arrays myelin can be distinguished from neuronal rafts by antibody binding to cell-specific surface antigens. Finally, myelin arrays formed in gold nanowells are used for surface plasmon resonance sensing. This assembly approach is simple, broadly applicable, and opens up new avenues of research not easily accomplished with standard microarray technology.
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Affiliation(s)
- Nathan J. Wittenberg
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Hyungsoon Im
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Timothy W. Johnson
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Xiaohua Xu
- Departments of Neurology and Immunology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Arthur E. Warrington
- Departments of Neurology and Immunology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Moses Rodriguez
- Departments of Neurology and Immunology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
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48
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Im H, Lee SH, Wittenberg NJ, Johnson TW, Lindquist NC, Nagpal P, Norris DJ, Oh SH. Template-stripped smooth Ag nanohole arrays with silica shells for surface plasmon resonance biosensing. ACS NANO 2011; 5:6244-53. [PMID: 21770414 PMCID: PMC3160512 DOI: 10.1021/nn202013v] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Inexpensive, reproducible, and high-throughput fabrication of nanometric apertures in metallic films can benefit many applications in plasmonics, sensing, spectroscopy, lithography, and imaging. Here we use template-stripping to pattern periodic nanohole arrays in optically thick, smooth Ag films with a silicon template made via nanoimprint lithography. Ag is a low-cost material with good optical properties, but it suffers from poor chemical stability and biocompatibility. However, a thin silica shell encapsulating our template-stripped Ag nanoholes facilitates biosensing applications by protecting the Ag from oxidation as well as providing a robust surface that can be readily modified with a variety of biomolecules using well-established silane chemistry. The thickness of the conformal silica shell can be precisely tuned by atomic layer deposition, and a 15 nm thick silica shell can effectively prevent fluorophore quenching. The Ag nanohole arrays with silica shells can also be bonded to polydimethylsiloxane (PDMS) microfluidic channels for fluorescence imaging, formation of supported lipid bilayers, and real-time, label-free SPR sensing. Additionally, the smooth surfaces of the template-stripped Ag films enhance refractive index sensitivity compared with as-deposited, rough Ag films. Because nearly centimeter-sized nanohole arrays can be produced inexpensively without using any additional lithography, etching, or lift-off, this method can facilitate widespread applications of metallic nanohole arrays for plasmonics and biosensing.
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Affiliation(s)
- Hyungsoon Im
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, U.S.A
| | - Si Hoon Lee
- Department of Biomedical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, U.S.A
| | - Nathan J. Wittenberg
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, U.S.A
| | - Timothy W. Johnson
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, U.S.A
| | - Nathan C. Lindquist
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, U.S.A
| | | | - David J. Norris
- Optical Materials Engineering Laboratory, ETH Zürich, Zürich, Switzerland
| | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, U.S.A
- Department of Biomedical Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, U.S.A
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Yoo HW, Jung JM, Lee SK, Jung HT. The fabrication of highly ordered silver nanodot patterns by platinum assisted nanoimprint lithography. NANOTECHNOLOGY 2011; 22:095304. [PMID: 21270483 DOI: 10.1088/0957-4484/22/9/095304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Silver has been widely used for optical sensing and imaging applications which benefit from localized surface plasmon resonance (LSPR) in a nanoscale configuration. Many attempts have been made to fabricate and control silver nanostructures in order to improve the high performance in sensing and other applications. However, a fatal mechanical weakness of silver and a lack of durability in oxygen-rich conditions have disrupted the manufacturing of reproducible nanostructures by the top-down lithography approach. In this study, we suggest a steady fabrication strategy to obtain highly ordered silver nanopatterns that are able to provide tunable LSPR characteristics. By using a protecting layer of platinum on a silver surface in the lithography process, we successfully obtained large-area (2.7 × 2.7 mm(2)) silver nanopatterns with high reproducibility. This large-area silver nanopattern was capable of enhancing the low concentration of a Cy3 fluorescence signal (∼10(-10) M) which was labeled with DNA oligomers.
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Affiliation(s)
- Hae-Wook Yoo
- Department of Chemical and Biomolecular Engineering (BK-21), Korea Advanced Institute of Science and Technology, Daejeon, Korea
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Roh S, Chung T, Lee B. Overview of the characteristics of micro- and nano-structured surface plasmon resonance sensors. SENSORS 2011; 11:1565-88. [PMID: 22319369 PMCID: PMC3274020 DOI: 10.3390/s110201565] [Citation(s) in RCA: 346] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 01/11/2011] [Accepted: 12/24/2011] [Indexed: 11/16/2022]
Abstract
The performance of bio-chemical sensing devices has been greatly improved by the development of surface plasmon resonance (SPR) based sensors. Advancements in micro- and nano-fabrication technologies have led to a variety of structures in SPR sensing systems being proposed. In this review, SPR sensors (from typical Kretschmann prism configurations to fiber sensor schemes) with micro- or nano-structures for local light field enhancement, extraordinary optical transmission, interference of surface plasmon waves, plasmonic cavities, etc. are discussed. We summarize and compare their performances and present guidelines for the design of SPR sensors.
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Affiliation(s)
- Sookyoung Roh
- Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Gwanak-Gu Gwanakro 599, Seoul 151-744, Korea.
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