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Ganesh KM, Bhaskar S, Cheerala VSK, Battampara P, Reddy R, Neelakantan SC, Reddy N, Ramamurthy SS. Review of Gold Nanoparticles in Surface Plasmon-Coupled Emission Technology: Effect of Shape, Hollow Nanostructures, Nano-Assembly, Metal-Dielectric and Heterometallic Nanohybrids. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:111. [PMID: 38202566 PMCID: PMC10780701 DOI: 10.3390/nano14010111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/23/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
Point-of-care (POC) diagnostic platforms are globally employed in modern smart technologies to detect events or changes in the analyte concentration and provide qualitative and quantitative information in biosensing. Surface plasmon-coupled emission (SPCE) technology has emerged as an effective POC diagnostic tool for developing robust biosensing frameworks. The simplicity, robustness and relevance of the technology has attracted researchers in physical, chemical and biological milieu on account of its unique attributes such as high specificity, sensitivity, low background noise, highly polarized, sharply directional, excellent spectral resolution capabilities. In the past decade, numerous nano-fabrication methods have been developed for augmenting the performance of the conventional SPCE technology. Among them the utility of plasmonic gold nanoparticles (AuNPs) has enabled the demonstration of plethora of reliable biosensing platforms. Here, we review the nano-engineering and biosensing applications of AuNPs based on the shape, hollow morphology, metal-dielectric, nano-assembly and heterometallic nanohybrids under optical as well as biosensing competencies. The current review emphasizes the recent past and evaluates the latest advancements in the field to comprehend the futuristic scope and perspectives of exploiting Au nano-antennas for plasmonic hotspot generation in SPCE technology.
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Affiliation(s)
- Kalathur Mohan Ganesh
- STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Sri Sathya Sai District, Puttaparthi 515134, India;
| | - Seemesh Bhaskar
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory (HMNTL), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Vijay Sai Krishna Cheerala
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Brindavan Campus, Kadugodi, Bengaluru 560067, India; (V.S.K.C.); (S.C.N.)
| | - Prajwal Battampara
- Center for Incubation Innovation Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru 560109, India; (P.B.); (R.R.); (N.R.)
| | - Roopa Reddy
- Center for Incubation Innovation Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru 560109, India; (P.B.); (R.R.); (N.R.)
| | - Sundaresan Chittor Neelakantan
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Brindavan Campus, Kadugodi, Bengaluru 560067, India; (V.S.K.C.); (S.C.N.)
| | - Narendra Reddy
- Center for Incubation Innovation Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru 560109, India; (P.B.); (R.R.); (N.R.)
| | - Sai Sathish Ramamurthy
- STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Sri Sathya Sai District, Puttaparthi 515134, India;
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Treebupachatsakul T, Shinnakerdchoke S, Pechprasarn S. Sensing Mechanisms of Rough Plasmonic Surfaces for Protein Binding of Surface Plasmon Resonance Detection. SENSORS (BASEL, SWITZERLAND) 2023; 23:3377. [PMID: 37050437 PMCID: PMC10098771 DOI: 10.3390/s23073377] [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: 01/13/2023] [Revised: 03/05/2023] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
Surface plasmon resonance (SPR) has been utilized in various optical applications, including biosensors. The SPR-based sensor is a gold standard for protein kinetic measurement due to its ultrasensitivity on the plasmonic metal surface. However, a slight change in the surface morphology, such as roughness or pattern, can significantly impact its performance. This study proposes a theoretical framework to explain sensing mechanisms and quantify sensing performance parameters of angular surface plasmon resonance detection for binding kinetic sensing at different levels of surface roughness. The theoretical investigation utilized two models, a protein layer coating on a rough plasmonic surface with and without sidewall coatings. The two models enable us to separate and quantify the enhancement factors due to the localized surface plasmon polaritons at sharp edges of the rough surfaces and the increased surface area for protein binding due to roughness. The Gaussian random surface technique was employed to create rough metal surfaces. Reflectance spectra and quantitative performance parameters were simulated and quantified using rigorous coupled-wave analysis and Monte Carlo simulation. These parameters include sensitivity, plasmonic dip position, intensity contrast, full width at half maximum, plasmonic angle, and figure of merit. Roughness can significantly impact the intensity measurement of binding kinetics, positively or negatively, depending on the roughness levels. Due to the increased scattering loss, a tradeoff between sensitivity and increased roughness leads to a widened plasmonic reflectance dip. Some roughness profiles can give a negative and enhanced sensitivity without broadening the SPR spectra. We also discuss how the improved sensitivity of rough surfaces is predominantly due to the localized surface wave, not the increased density of the binding domain.
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Affiliation(s)
- Treesukon Treebupachatsakul
- Department of Biomedical Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Siratchakrit Shinnakerdchoke
- Department of Biomedical Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Suejit Pechprasarn
- College of Biomedical Engineering, Rangsit University, Pathum Thani 12000, Thailand
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3
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Mitsushio M, Miyahara A, Yoshidome T, Nakatake S. Development of a multi-functional SPR sensing system using a square glass rod with two gold-deposited adjacent faces. ANAL SCI 2023; 39:601-606. [PMID: 36694042 DOI: 10.1007/s44211-023-00275-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/14/2023] [Indexed: 01/26/2023]
Abstract
A multi-functional sensing system based on surface plasmon resonance (SPR) phenomenon using a square glass rod with two gold-deposited adjacent faces was developed in this work. This sensor system consists of a unpolarized light-emitting diode, a gold-deposited square glass rod, a polarizing beam splitter, and two photodiodes. The SPR responses of two adjacent faces are independently and simultaneously measured with a polarizing beam splitter and two PDs. The response property of the gold-deposited face was confirmed using methanol solutions of ethylene glycol. The response curve of the sensor of the 45 nm gold-deposited face was compared with the theoretical curve calculated using multi-layer Fresnel equations. It was confirmed that the experimental curve is similar to the theoretical one. An evaluation was carried out on the square glass rod, which has an unmodified face and Teflon AF2400 coated gold-deposited face as multi-functional sensor. It was confirmed that this sensor can simultaneously measure the ethanol concentration in the glucose mix solution and refractive index of the sample from the calibration curve. Since this sensor can measure multiple components simultaneously, expected applications to various fields include medical diagnosis, food analysis, and environmental monitoring.
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Affiliation(s)
- Masaru Mitsushio
- Department of Chemistry, Biotechnology and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan.
| | - Akihiro Miyahara
- Department of Chemistry, Biotechnology and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan
| | - Toshifumi Yoshidome
- Department of Chemistry, Biotechnology and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan
| | - Sadafumi Nakatake
- Kagoshima University Southern Kyushu and Nansei Islands Innovation Center, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan
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Neelam A, Tabassum S. Optical Sensing Technologies to Elucidate the Interplay between Plant and Microbes. MICROMACHINES 2023; 14:195. [PMID: 36677256 PMCID: PMC9866067 DOI: 10.3390/mi14010195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Plant-microbe interactions are critical for ecosystem functioning and driving rhizosphere processes. To fully understand the communication pathways between plants and rhizosphere microbes, it is crucial to measure the numerous processes that occur in the plant and the rhizosphere. The present review first provides an overview of how plants interact with their surrounding microbial communities, and in turn, are affected by them. Next, different optical biosensing technologies that elucidate the plant-microbe interactions and provide pathogenic detection are summarized. Currently, most of the biosensors used for detecting plant parameters or microbial communities in soil are centered around genetically encoded optical and electrochemical biosensors that are often not suitable for field applications. Such sensors require substantial effort and cost to develop and have their limitations. With a particular focus on the detection of root exudates and phytohormones under biotic and abiotic stress conditions, novel low-cost and in-situ biosensors must become available to plant scientists.
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Inoue S, Fukada K, Hayashi K, Seyama M. Data Processing of SPR Curve Data to Maximize the Extraction of Changes in Electrochemical SPR Measurements. BIOSENSORS 2022; 12:bios12080615. [PMID: 36005010 PMCID: PMC9406148 DOI: 10.3390/bios12080615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/30/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022]
Abstract
We developed a novel measuring and data-processing method for performing electrochemical surface plasmon resonance (EC-SPR) on sensor surfaces for which detecting a specific SPR angle is difficult, such as a polymer having a non-uniform thickness with coloration. SPR measurements are used in medicine and basic research as an analytical method capable of molecular detection without labeling. However, SPR is not good for detecting small molecules with small refractive index changes. The proposed EC-SPR, which combines SPR measurements with an electrochemical reaction, makes it possible to measure small molecules without increasing the number of measurement steps. A drawback of EC-SPR is that it is difficult to detect a specific SPR angle on electron mediators, and it was found that it may not be possible to capture all the features produced. The novel method we describe here is different from the conventional one in which a specific SPR angle is obtained from an SPR curve; rather, it processes the SPR curve itself and can efficiently aggregate the feature displacements in the SPR curves that are dispersed through multiple angles. As an application, we used our method to detect small concentrations of H2O2 (LOD 0.7 μM) and glutamate (LOD 5 μM).
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Cai YP, Wan RG. Bistable reflection and beam shifts with excitation of surface plasmons in a saturable absorbing medium. OPTICS EXPRESS 2022; 30:20725-20736. [PMID: 36224810 DOI: 10.1364/oe.461124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/19/2022] [Indexed: 06/16/2023]
Abstract
We investigate the nonlinear reflection of a light beam from a Kretschmann configuration with saturable absorbing medium. The absorption of medium has direct influence on the intrinsic loss of the system, thus affecting the reflectivity and the phase variation when the surface plasmons are resonantly excited. As the incident power changes, the reflectivity can be switched between high and low values and exhibits absorptive optical bistability as a result of the inherent positive feedback by the intensity-dependent saturation effect. The Goos-Hänchen and the Imbert-Fedorov shifts of the reflected beam have the same bistable behavior as the reflectance. The effects of the thickness of metal film and the linear absorption coefficient on the hysteresis loop are analyzed in detail by considering the system losses and the saturated absorption. The bistable reflection and beam shifts may have applications in all-optical devices, such as optical switching.
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MITSUSHIO M, YOSHIDOME T. Development of a Gold-deposited Square Glass Rod Sensor Capable of Independent and Simultaneous Measurements on Two Adjacent Faces. BUNSEKI KAGAKU 2022. [DOI: 10.2116/bunsekikagaku.71.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Masaru MITSUSHIO
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
| | - Toshifumi YOSHIDOME
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University
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Wang L, Liang S, Zhou Y, Wang LG. Influence of spatial dispersion on phase and lateral shifts near the reflection dip in the Kretschmann-Raether structure. OPTICS EXPRESS 2022; 30:10672-10683. [PMID: 35473028 DOI: 10.1364/oe.453472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
The influence of spatial dispersion of metals on phase and Goos-Hänchen (GH) shifts near the reflection dip has been investigated in the Kretschmann-Raether configuration, within the hydrodynamic model framework. We have derived an analytical expression of the reflection coefficient and discussed the optical properties when the nonlocality of metals based on the phenomenological model and Kretchmann's theory is taken into account. Our results show that nonlocality has a significant impact for large wavevectors and causes a shift of the critical point corresponding to the total absorption. Furthermore, these changes also lead to diverse changes in the optical properties including amplitude, phase and GH shift close to the conditions of excitation for the surface plasmon. Our work provides a solid foundation for the understanding of nonlocality in multilayered plasmonic structures and paves the way for future experiments.
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Terao K, Kondo S. AC-Electroosmosis-Assisted Surface Plasmon Resonance Sensing for Enhancing Protein Signals with a Simple Kretschmann Configuration. SENSORS 2022; 22:s22030854. [PMID: 35161603 PMCID: PMC8838944 DOI: 10.3390/s22030854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 11/27/2022]
Abstract
A surface plasmon resonance (SPR) sensor chip fabricated with a comb-shaped microelectrode array to supply alternating current (AC) voltage is reported. The chip induces circulating flow near the surface (i.e., AC electroosmosis). The circulating flow provides a mixing effect, which enhances the binding of the analyte molecules. We evaluated the SPR characteristics of the chip and demonstrated an improvement in protein binding to the chip surface. SPR sensor chips with comb-shaped microelectrodes were fabricated using standard UV lithography. Sensing experiments were conducted using a standard Kretschmann-type SPR measurement system. To demonstrate the mixing effect of AC electroosmosis, we evaluated the binding of immunoglobulin G molecules onto the sensor surface where anti-immunoglobulin G antibodies were covalently immobilized. The result indicates that the amount of binding increases by a factor of 1.7 above that achieved by using a conventional chip, suggesting enhancement of the protein signal.
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Gao Y, Aspnes DE, Franzen S. Classical Model of Surface Enhanced Infrared Absorption (SEIRA) Spectroscopy. J Phys Chem A 2022; 126:341-351. [PMID: 35005959 DOI: 10.1021/acs.jpca.1c08463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The molecule-plasmon interaction is the key to the mechanisms of surface enhanced infrared absorption (SEIRA) and surface enhanced Raman scattering (SERS). Since plasmons are well described by Maxwell's equations, one fundamental treatment involves the classical interpretation of infrared absorption and resonance Raman spectroscopies. We can understand the molecule-plasmon interaction using electromagnetic theory if the classical field effect on a transition dipole moment or transition polarizability is properly described. In previous work, we derived the Raman excitation profile of a model molecule using a classical driven spring attached to a charged mass with a perturbative force constant due to vibrational oscillations. In this study we generalize the interactions of plasmons with molecules by considering the N2O asymmetric stretch SEIRA signal on a Dy doped CdO (CdO:Dy) film. This semiconductor has tunable plasmon dispersion curves throughout the near-and mid-infrared that can interact directly with vibrational absorption transitions. We have demonstrated this using the Kretschmann configuration with a CaF2 prism and a MgO substrate. The model predicts the phase behavior of SEIRA. The calculated enhancement factor relative to an Au control is 6.2, in good agreement with the value of 6.8 ± 0.5 measured under the same conditions.
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Affiliation(s)
- Yuan Gao
- Department of Chemistry, NC State University, Raleigh, North Carolina 27695-8204, United States
| | - D E Aspnes
- Department of Physics, NC State University, Raleigh, North Carolina 27695-8202, United States
| | - Stefan Franzen
- Department of Chemistry, NC State University, Raleigh, North Carolina 27695-8204, United States
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Chiodi E, Marn AM, Bakhshpour M, Lortlar Ünlü N, Ünlü MS. The Effects of Three-Dimensional Ligand Immobilization on Kinetic Measurements in Biosensors. Polymers (Basel) 2022; 14:polym14020241. [PMID: 35054650 PMCID: PMC8777619 DOI: 10.3390/polym14020241] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 12/22/2022] Open
Abstract
The field of biosensing is in constant evolution, propelled by the need for sensitive, reliable platforms that provide consistent results, especially in the drug development industry, where small molecule characterization is of uttermost relevance. Kinetic characterization of small biochemicals is particularly challenging, and has required sensor developers to find solutions to compensate for the lack of sensitivity of their instruments. In this regard, surface chemistry plays a crucial role. The ligands need to be efficiently immobilized on the sensor surface, and probe distribution, maintenance of their native structure and efficient diffusion of the analyte to the surface need to be optimized. In order to enhance the signal generated by low molecular weight targets, surface plasmon resonance sensors utilize a high density of probes on the surface by employing a thick dextran matrix, resulting in a three-dimensional, multilayer distribution of molecules. Despite increasing the binding signal, this method can generate artifacts, due to the diffusion dependence of surface binding, affecting the accuracy of measured affinity constants. On the other hand, when working with planar surface chemistries, an incredibly high sensitivity is required for low molecular weight analytes, and furthermore the standard method for immobilizing single layers of molecules based on self-assembled monolayers (SAM) of epoxysilane has been demonstrated to promote protein denaturation, thus being far from ideal. Here, we will give a concise overview of the impact of tridimensional immobilization of ligands on label-free biosensors, mostly focusing on the effect of diffusion on binding affinity constants measurements. We will comment on how multilayering of probes is certainly useful in terms of increasing the sensitivity of the sensor, but can cause steric hindrance, mass transport and other diffusion effects. On the other hand, probe monolayers on epoxysilane chemistries do not undergo diffusion effect but rather other artifacts can occur due to probe distortion. Finally, a combination of tridimensional polymeric chemistry and probe monolayer is presented and reviewed, showing advantages and disadvantages over the other two approaches.
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Affiliation(s)
- Elisa Chiodi
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.B.); (N.L.Ü.)
- Correspondence: (E.C.); (M.S.Ü.)
| | - Allison M. Marn
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.B.); (N.L.Ü.)
- School of Engineering, Computing, and Construction Management, Roger Williams University, Bristol, RI 02809, USA
| | - Monireh Bakhshpour
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.B.); (N.L.Ü.)
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Nese Lortlar Ünlü
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.B.); (N.L.Ü.)
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - M. Selim Ünlü
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.B.); (N.L.Ü.)
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
- Correspondence: (E.C.); (M.S.Ü.)
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Tan J, Wen Y, Li M. Emerging biosensing platforms for quantitative detection of exosomes as diagnostic biomarkers. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Treebupachatsakul T, Shinnakerdchoke S, Pechprasarn S. Analysis of Effects of Surface Roughness on Sensing Performance of Surface Plasmon Resonance Detection for Refractive Index Sensing Application. SENSORS 2021; 21:s21186164. [PMID: 34577371 PMCID: PMC8473353 DOI: 10.3390/s21186164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 12/26/2022]
Abstract
This paper provides a theoretical framework to analyze and quantify roughness effects on sensing performance parameters of surface plasmon resonance measurements. Rigorous coupled-wave analysis and the Monte Carlo method were applied to compute plasmonic reflectance spectra for different surface roughness profiles. The rough surfaces were generated using the low pass frequency filtering method. Different coating and surface treatments and their reported root-mean-square roughness in the literature were extracted and investigated in this study to calculate the refractive index sensing performance parameters, including sensitivity, full width at half maximum, plasmonic dip intensity, plasmonic dip position, and figure of merit. Here, we propose a figure-of-merit equation considering optical intensity contrast and signal-to-noise ratio. The proposed figure-of-merit equation could predict a similar refractive index sensing performance compared to experimental results reported in the literature. The surface roughness height strongly affected all the performance parameters, resulting in a degraded figure of merit for surface plasmon resonance measurement.
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Affiliation(s)
- Treesukon Treebupachatsakul
- Department of Biomedical Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand; (T.T.); (S.S.)
| | - Siratchakrit Shinnakerdchoke
- Department of Biomedical Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand; (T.T.); (S.S.)
| | - Suejit Pechprasarn
- College of Biomedical Engineering, Rangsit University, Pathum Thani 12000, Thailand
- Correspondence:
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Performance Analysis of Non-Interferometry Based Surface Plasmon Resonance Microscopes. SENSORS 2021; 21:s21155230. [PMID: 34372467 PMCID: PMC8347916 DOI: 10.3390/s21155230] [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: 07/01/2021] [Revised: 07/21/2021] [Accepted: 07/29/2021] [Indexed: 01/03/2023]
Abstract
Surface plasmon microscopy has been of interest to the science and engineering community and has been utilized in broad aspects of applications and studies, including biochemical sensing and biomolecular binding kinetics. The benefits of surface plasmon microscopy include label-free detection, high sensitivity, and quantitative measurements. Here, a theoretical framework to analyze and compare several non-interferometric surface plasmon microscopes is proposed. The scope of the study is to (1) identify the strengths and weaknesses in each surface plasmon microscopes reported in the literature; (2) quantify their performance in terms of spatial imaging resolution, imaging contrast, sensitivity, and measurement accuracy for quantitative and non-quantitative imaging modes of the microscopes. Six types of non-interferometric microscopes were included in this study: annulus aperture scanning, half annulus aperture scanning, single-point scanning, double-point scanning, single-point scanning, at 45 degrees azimuthal angle, and double-point scanning at 45 degrees azimuthal angle. For non-quantitative imaging, there is a substantial tradeoff between the image contrast and the spatial resolution. For the quantitative imaging, the half annulus aperture provided the highest sensitivity of 127.058 rad/μm2 RIU−1, followed by the full annulus aperture of 126.318 rad/μm2 RIU−1. There is a clear tradeoff between spatial resolution and sensitivity. The annulus aperture and half annulus aperture had an optimal resolution, sensitivity, and crosstalk compared to the other non-interferometric surface plasmon resonance microscopes. The resolution depends strongly on the propagation length of the surface plasmons rather than the numerical aperture of the objective lens. For imaging and sensing purposes, the recommended microfluidic channel size and protein stamping size for surface plasmon resonance experiments is at least 25 μm for accurate plasmonic measurements.
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Das S, Agarwal DK, Mandal B, Rao VR, Kundu T. Detection of the Chilli Leaf Curl Virus Using an Attenuated Total Reflection-Mediated Localized Surface-Plasmon-Resonance-Based Optical Platform. ACS OMEGA 2021; 6:17413-17423. [PMID: 34278127 PMCID: PMC8280655 DOI: 10.1021/acsomega.1c01702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/09/2021] [Indexed: 05/16/2023]
Abstract
The development of a nanoparticle-based optical platform has been presented as a biosensor for detecting target-specific plant virus DNA. The binding dynamics of gold nanoparticles has been studied on the amine-functionalized surface by the attenuated total reflection (ATR)-based evanescent wave absorption method monitoring the localized surface plasmon resonance (LSPR). The developed surface was established as a refractive index sensor by monitoring the LSPR absorption peak of gold nanoparticles. This nanoparticle-immobilized surface was explored to establish as a biosensing platform with target-specific immunoglobulin (IgG) antibody-antigen interaction. The IgG concentration-dependent variation of absorbance was correlated with the refractive index change. After successfully establishing this ATR configuration as an LSPR-based biosensor, the single-stranded DNA of the chilli leaf curl virus was detected using its complementary DNA sequence as a receptor. The limit of detection of this sensor was determined to be 1.0 μg/mL for this target viral DNA. This ATR absorption technique has enormous potential as an LSPR based nano-biosensor for the detection of other begomoviruses.
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Affiliation(s)
- Sonatan Das
- Centre
for Research in Nanotechnology and Science, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Dilip Kumar Agarwal
- Department
of Physics, Indian Institute of Technology
Bombay, Mumbai 400076, India
| | - Bikash Mandal
- Advanced
Centre for Plant Virology, Indian Agricultural
Research Institute, Pusa, New Delhi, Delhi 110012, India
| | - V. Ramgopal Rao
- Centre
for Research in Nanotechnology and Science, Indian Institute of Technology Bombay, Mumbai 400076, India
- Department
of Electrical Engineering, Indian Institute
of Technology Bombay, Mumbai 400076, India
| | - Tapanendu Kundu
- Centre
for Research in Nanotechnology and Science, Indian Institute of Technology Bombay, Mumbai 400076, India
- Department
of Physics, Indian Institute of Technology
Bombay, Mumbai 400076, India
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16
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Su Q, Jiang C, Gou D, Long Y. Surface Plasmon-Assisted Fluorescence Enhancing and Quenching: From Theory to Application. ACS APPLIED BIO MATERIALS 2021; 4:4684-4705. [PMID: 35007020 DOI: 10.1021/acsabm.1c00320] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The integration of surface plasmon resonance and fluorescence yields a multiaspect improvement in surface fluorescence sensing and imaging, leading to a paradigm shift of surface plasmon-assisted fluorescence techniques, for example, surface plasmon enhanced field fluorescence spectroscopy, surface plasmon coupled emission (SPCE), and SPCE imaging. This Review aims to characterize the unique optical property with a common physical interpretation and diverse surface architecture-based measurements. The fundamental electromagnetic theory is employed to comprehensively unveil the fluorophore-surface plasmon interaction, and the associated surface-modification design is liberally highlighted to balance the surface plasmon-induced fluorescence-enhancement efforts and the surface plasmon-caused fluorescence-quenching effects. In particular, all types of surface structures, for example, silicon, carbon, protein, DNA, polymer, and multilayer, are systematically interrogated in terms of component, thickness, stiffness, and functionality. As a highly interdisciplinary and expanding field in physics, optics, chemistry, and surface chemistry, this Review could be of great interest to a broad readership, in particular, among physical chemists, analytical chemists, and in surface-based sensing and imaging studies.
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Affiliation(s)
- Qiang Su
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Carson International Cancer Center, Shenzhen University, 1066 Xueyuan Street, Nanshan District, Shenzhen 518055, Guangdong, China.,School of Chemistry, University of Birmingham, Edgbaston B15 2TT, Birmingham, United Kingdom
| | - Cheng Jiang
- Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom.,Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU, United Kingdom
| | - Deming Gou
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Carson International Cancer Center, Shenzhen University, 1066 Xueyuan Street, Nanshan District, Shenzhen 518055, Guangdong, China
| | - Yi Long
- Clinical Research Center, Southern University of Science and Technology Hospital, 6019 Liuxian Street, Xili Avenue, Nanshan District, Shenzhen 518055, Guangdong, China
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Uddin SMA, Chowdhury SS, Kabir E. Numerical Analysis of a Highly Sensitive Surface Plasmon Resonance Sensor for SARS-CoV-2 Detection. PLASMONICS (NORWELL, MASS.) 2021; 16:2025-2037. [PMID: 34054377 PMCID: PMC8144697 DOI: 10.1007/s11468-021-01455-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 05/03/2021] [Indexed: 05/27/2023]
Abstract
In this paper, we propose a surface plasmon resonance (SPR) structure based on Kretschmann configuration incorporating layers of silicon and BaTiO3 on top of Ag for real-time detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) using thiol-tethered DNA as a ligand. Extensive numerical analysis based on transfer matrix theory as well as finite-difference time-domain (FDTD) technique has been performed to characterize the sensor response considering sensitivity, full width at half maxima, and minimum reflection. About 7.6 times enhanced sensitivity has been obtained using the proposed architecture for SARS-CoV-2 detection, compared to the basic Kretschmann configuration. Notably, the structure provides consistent enhancement over other competitive SPR structures for both angular and wavelength interrogations with a figure-of-merit of 692.28. Additionally, we repeated simulations for various ligate-ligand pairs to assess the range of applicability and robust performance improvement has been observed. As a result, the proposed sensor design provides a suitable configuration for highly sensitive, rapid, noninvasive biosensing which can be useful if adopted in experimental sensing protocols.
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Affiliation(s)
| | | | - Ehsan Kabir
- Department of EEE, Bangladesh University of Engineering and Technology, Dhaka, 1205 Bangladesh
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Okuyama H, Tamaki T, Oshiba Y, Ueda H, Yamaguchi T. Numerical Modeling for Sensitive and Rapid Molecular Detection by Membrane-Based Immunosensors. Anal Chem 2021; 93:7210-7219. [PMID: 33956421 DOI: 10.1021/acs.analchem.1c00250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rapid, simple, and sensitive point-of-care testing (POCT) has attracted attention in recent years due to its excellent potential for early disease diagnosis and health monitoring. The flow-through biosensor design is a candidate for POCT that utilizes the small-sized pores of a porous membrane as a recognition space where it emits a signal comparable to that of a conventional enzyme-linked immunosorbent assay within 35 min of detection time. In this paper, we present a numerical model for this immunosensing technology to systematically design an improved recognition system. The model considers mass transfer into the pore (convection and diffusion), the kinetics between the immobilized receptor and the target molecule, and the flow conditions, successfully leading to a bottleneck step (capture of secondary antibody) in sandwich-type detection. Our simulation results also show that this problem can be solved by adopting both appropriate receptors and analytical conditions. Eventually, the requirements to achieve the sensitivity required for POCT were fulfilled, which will allow for further development of immunosensing devices for disease detection.
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Affiliation(s)
- Hiroto Okuyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Takanori Tamaki
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Yuhei Oshiba
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Hiroshi Ueda
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Takeo Yamaguchi
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
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Lambert AS, Valiulis SN, Malinick AS, Tanabe I, Cheng Q. Plasmonic Biosensing with Aluminum Thin Films under the Kretschmann Configuration. Anal Chem 2020; 92:8654-8659. [PMID: 32525300 DOI: 10.1021/acs.analchem.0c01631] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Aluminum has recently attracted considerable interest as a plasmonic material due to its unique optical properties, but most work has been limited to nanostructures. We report here SPR biosensing with aluminum thin-films using the standard Kretschmann configuration that has previously been dominated by gold films. Electron-beam physical vapor deposition (EBPVD)-prepared Al films oxidize in air to form a nanofilm of Al2O3, yielding robust stability for sensing applications in buffered solutions. FDTD simulations revealed a sharp plasmonic dip in the visible range that enables measurement of both angular shift and reflection intensity change at a fixed angle. Bulk and surface tests indicated that Al films exhibited superb sensitivity performance in both categories. Compared to Au, the Al/Al2O3 layer showed a marked effect of suppressing nonspecific binding from proteins in human serum. Further characterization indicated that Al film demonstrated a higher sensitivity and a wider working range than Au films when used for SPR imaging analysis. Combined with its economic and manufacturing benefits, the Al thin-film has the potential to become a highly advantageous plasmonic substrate to meet a wide range of biosensing needs in SPR configurations.
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Affiliation(s)
- Alexander S Lambert
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Santino N Valiulis
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Alexander S Malinick
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Ichiro Tanabe
- Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan
| | - Quan Cheng
- Department of Chemistry, University of California, Riverside, California 92521, United States
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20
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Quantification of shellfish major allergen tropomyosin by SPR biosensor with gold patterned Biochips. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.02.041] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Allsop T, Neal R. A Review: Evolution and Diversity of Optical Fibre Plasmonic Sensors. SENSORS 2019; 19:s19224874. [PMID: 31717377 PMCID: PMC6891812 DOI: 10.3390/s19224874] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/04/2019] [Accepted: 11/05/2019] [Indexed: 12/23/2022]
Abstract
The purpose of this review is to bring to the attention of the wider research community how two quite different optical sensory techniques were integrated resulting in a sensor device of exceptional sensitivity with wide ranging capability. Both authors have collaborated over a 20 year period, each researching initially surface plasmon resonance (SPR) and optical fibre Bragg grating devices. Our individual research, funded in part by EPSRC and industry into these two areas, converged, resulting in a device that combined the ultra-sensitive working platform of SPR behavior with that of fibre Bragg grating development, which provided a simple method for SPR excitation. During this period, they developed a new approach to the fabrication of nano-structured metal coatings for plasmonic devices and demonstrated on fibre optic platform, which has created an ultra-sensitive optical sensing platform. Both authors believe that the convergence of these two areas will create opportunities in detection and sensing yet to be realised. Furthermore, giving the reader "sign-post" research articles to help to construct models to design sensors and to understand their experimental results.
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Affiliation(s)
- Thomas Allsop
- School of Engineering and Computer Science, University of Hull, Hull HU6 7RX, UK
- Correspondence: ; Tel.: +44-1482-464540
| | - Ron Neal
- School of Computing, Communications and Electronics, University of Plymouth, Plymouth PL4 8AA, UK;
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Zhou J, Qi Q, Wang C, Qian Y, Liu G, Wang Y, Fu L. Surface plasmon resonance (SPR) biosensors for food allergen detection in food matrices. Biosens Bioelectron 2019; 142:111449. [PMID: 31279816 DOI: 10.1016/j.bios.2019.111449] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/23/2019] [Accepted: 06/18/2019] [Indexed: 11/25/2022]
Abstract
Food allergies are recognized as a growing public health concern, with an estimated 3% of adults and 6-8% of children affected by food allergy disorders. Hence, food allergen detection, labeling, and management have become significant priorities within the food industry, and there is an urgent requirement for reliable, sensitive, and user-friendly technologies to trace food allergens in food products. In this critical review, we provide a comprehensive overview of the principles and applications of surface plasmon resonance (SPR) biosensors in the identification and quantification of food allergens (milk, egg, peanut, and seafood), including fiber-optic surface plasmon resonance (FOSPR), surface plasmon resonance imaging (SPRI), localized surface plasmon resonance (LSPR), and transmission surface plasmon resonance (TSPR). Moreover, the characteristics and fitness-for-purpose of each reviewed SPR biosensor is discussed, and the potential of newly developed SPR biosensors for multi-allergen real-time detection in a complex food system is highlighted. Such SPR biosensors are also required to facilitate the reliable, high-throughput, and real-time detection of food allergens by the food control industry and food safety control officials to easily monitor cross-contamination during food processing.
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Affiliation(s)
- Jinru Zhou
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, PR China
| | - Qinqin Qi
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, PR China
| | - Chong Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, PR China
| | - Yifan Qian
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, PR China
| | - Guangming Liu
- College of Food and Biological Engineering, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, PR China
| | - Yanbo Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, PR China.
| | - Linglin Fu
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, PR China.
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El Kurdi R, Patra D. Tuning the surface of Au nanoparticles using poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol): enzyme free and label free sugar sensing in serum samples using resonance Rayleigh scattering spectroscopy. Phys Chem Chem Phys 2018; 20:9616-9629. [DOI: 10.1039/c8cp01147h] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (F-108) functionalized gold nanoparticles (Au NPs) have been successfully synthesized for glucose estimation.
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Affiliation(s)
- Riham El Kurdi
- Department of Chemistry
- American University of Beirut
- Beirut
- Lebanon
| | - Digambara Patra
- Department of Chemistry
- American University of Beirut
- Beirut
- Lebanon
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Mishra AK, Mishra SK. MgF 2 prism/rhodium/graphene: efficient refractive index sensing structure in optical domain. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:145001. [PMID: 28240219 DOI: 10.1088/1361-648x/aa5e40] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A theoretical study of a noble surface plasmon resonance (SPR) based sensing probe has been carried out. The sensing probe consists of a magnesium fluoride (MgF2) prism with its base coated with rarely used noble metal rhodium (Rh) and a bio-compatible layer of graphene. The refractive indices (RIs) of the sensing medium vary from 1.33 to 1.36 refractive index unit (RIU). The thickness of Rh and the number of graphene layers have been optimized for maximum sensitivity in a constraint set by the detection accuracy (DA). For the operating wavelength of 632 nm, the optimized sensing probe Rh (12 nm)/graphene (single layer) demonstrates sensitivity of ~259 degree/RIU with corresponding DA of ~0.32 degree-1 while for 532 nm of excitation, the optimized sensing probe Rh (12 nm)/graphene (three layer) exhibits sensitivity of ~240 degree/RIU and DA of ~0.27 degree-1.
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Affiliation(s)
- Akhilesh Kumar Mishra
- Department of Electrical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
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Integration of Curved D-Type Optical Fiber Sensor with Microfluidic Chip. SENSORS 2016; 17:s17010063. [PMID: 28042821 PMCID: PMC5298636 DOI: 10.3390/s17010063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 12/16/2016] [Accepted: 12/27/2016] [Indexed: 12/30/2022]
Abstract
A curved D-type optical fiber sensor (OFS) combined with a microfluidic chip is proposed. This OFS, based on surface plasmon resonance (SPR) of the Kretchmann’s configuration, is applied as a biosensor to measure the concentrations of different bio-liquids such as ethanol, methanol, and glucose solutions. The SPR phenomenon is attained by using the optical fiber to guide the light source to reach the side-polished, gold-coated region. Integrating this OFS with a polymethylmethacrylate (PMMA)-based microfluidic chip, the SPR spectra for liquids with different refractive indices are recorded. Experimentally, the sensitivity of the current biosensor was calculated to be in the order of 10−5 RIU. This microfluidic chip-integrated OFS could be valuable for monitoring subtle changes in biological samples such as blood sugar, allergen, and biomolecular interactions.
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Differential pulse anodic stripping voltammetry for detection of As (III) by Chitosan-Fe(OH)3 modified glassy carbon electrode: A new approach towards speciation of arsenic. Talanta 2016; 158:235-245. [DOI: 10.1016/j.talanta.2016.05.053] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/16/2016] [Accepted: 05/17/2016] [Indexed: 11/20/2022]
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Chasnitsky M, Golosovsky M, Davidov D. Broadband surface plasmon wave excitation using dispersion engineering. OPTICS EXPRESS 2015; 23:30570-30582. [PMID: 26698534 DOI: 10.1364/oe.23.030570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
High sensitivity of surface-plasmon-based sensors stems from the fact that the surface plasmon is a resonance phenomenon. The resonance results from the phase-matching condition when the phase velocity of the surface plasmon wave and of the lateral component of the incident light become equal. We show that this condition can be satisfied simultaneously for many wavelengths. We demonstrate numerically and experimentally that this allows a surface plasmon resonance that extends over a broad wavelength range. We consider two methods of excitation of such broadband surface plasmon resonance: (i) patterning the interface where the surface plasmon propagates and (ii) broadband coupling through dispersion compensation. We demonstrate extremely broadband surface plasmon excitation at the Au-water or Au-air interface that extends through the whole near-infrared range from λ = 1 μm to 3 μm. We show how this broadband surface plasmon can be used for sensitive spectroscopic sensing, in particular for monitoring wetting/dewetting processes such as thin liquid film growth.
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Fen YW, Yunus WMM, Talib ZA, Yusof NA. Development of surface plasmon resonance sensor for determining zinc ion using novel active nanolayers as probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 134:48-52. [PMID: 25004894 DOI: 10.1016/j.saa.2014.06.081] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/28/2014] [Accepted: 06/01/2014] [Indexed: 06/03/2023]
Abstract
In this study, novel active nanolayers in combination with surface plasmon resonance (SPR) system for zinc ion (Zn(2+)) detection has been developed. The gold surface used for the SPR system was modified with the novel developed active nanolayers, i.e. chitosan and chitosan-tetrabutyl thiuram disulfide (chitosan-TBTDS). Both chitosan and chitosan-TBTDS active layers were fabricated on the gold surface by spin coating technique. The system was used to monitor SPR signal for Zn(2+) in aqueous media with and without sensitivity enhancement by TBTDS. For both active nanolayers, the shift of resonance angle is directly proportional to the concentration of Zn(2+) in aqueous media. The higher shift of resonance angle was obtained for chitosan-TBTDS active nanolayer due to a specific binding of TBTDS with Zn(2+). The chitosan-TBTDS active nanolayer enhanced the sensitivity of detection down to 0.1 mg/l and also induced a selective detection towards Zn(2+).
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Affiliation(s)
- Yap Wing Fen
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia.
| | - W Mahmood Mat Yunus
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Zainal Abidin Talib
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Nor Azah Yusof
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
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Tabassum R, Gupta BD. Surface plasmon resonance based fiber optic detection of chlorine utilizing polyvinylpyrolidone supported zinc oxide thin films. Analyst 2015; 140:1863-70. [DOI: 10.1039/c4an01588f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly sensitive chlorine sensor for an aqueous medium is fabricated using an optical fiber surface plasmon resonance (OFSPR) system.
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Affiliation(s)
- Rana Tabassum
- Physics Department
- Indian Institute of Technology Delhi
- New Delhi – 110016
- India
| | - Banshi D. Gupta
- Physics Department
- Indian Institute of Technology Delhi
- New Delhi – 110016
- India
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30
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Patskovsky S, Meunier M. Reflected light microspectroscopy for single-nanoparticle biosensing. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:097001. [PMID: 26385656 DOI: 10.1117/1.jbo.20.9.097001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/18/2015] [Indexed: 06/05/2023]
Abstract
Conventional and dark-field microscopy in the transmission mode is extensively used for single plasmonic nanoparticle (NP) imaging and spectral analysis. However, application of the transmission mode for realtime biosensing to single NP poses strict limitations on the size and material properties of the microfluidic system. This article proposes a simple optical technique based on reflected light microscopy to perform microspectroscopy of a single NP placed in a conventional, nontransparent liquid delivery system. The insertion of a variable spot diaphragm in the optical path reduces the interference effect that occurs at the NP-substrate interface and improves the signal-to-noise ratio in NP imaging. Using this method, we demonstrated spatial imaging and spectral analyses of 60-, 80-, and 100-nm single gold NPs. A single-NP sensor based on a 100-nm NP was used for real-time measurement of bulk refractive index changes in the microfluidic channel and for detection of fast dynamic poly(ethylene glycol) attachment to the NP surface. Finally, electrochemical single-particle microspectroscopy was demonstrated by using a methylene blue electroactive redox tag. The proposed optical approach is expected to significantly improve the miniaturization and multiplexing capabilities of high-throughput biosensing based on single NP.
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Surface plasmon resonance spectroscopy for characterisation of membrane protein-ligand interactions and its potential for drug discovery. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1838:43-55. [PMID: 23665295 DOI: 10.1016/j.bbamem.2013.04.028] [Citation(s) in RCA: 257] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 04/25/2013] [Accepted: 04/29/2013] [Indexed: 11/22/2022]
Abstract
Surface plasmon resonance (SPR) spectroscopy is a rapidly developing technique for the study of ligand binding interactions with membrane proteins, which are the major molecular targets for validated drugs and for current and foreseeable drug discovery. SPR is label-free and capable of measuring real-time quantitative binding affinities and kinetics for membrane proteins interacting with ligand molecules using relatively small quantities of materials and has potential to be medium-throughput. The conventional SPR technique requires one binding component to be immobilised on a sensor chip whilst the other binding component in solution is flowed over the sensor surface; a binding interaction is detected using an optical method that measures small changes in refractive index at the sensor surface. This review first describes the basic SPR experiment and the challenges that have to be considered for performing SPR experiments that measure membrane protein-ligand binding interactions, most importantly having the membrane protein in a lipid or detergent environment that retains its native structure and activity. It then describes a wide-range of membrane protein systems for which ligand binding interactions have been characterised using SPR, including the major drug targets G protein-coupled receptors, and how challenges have been overcome for achieving this. Finally it describes some recent advances in SPR-based technology and future potential of the technique to screen ligand binding in the discovery of drugs. This article is part of a Special Issue entitled: Structural and biophysical characterisation of membrane protein-ligand binding.
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Preechaburana P, Gonzalez MC, Suska A, Filippini D. Surface Plasmon Resonance Chemical Sensing on Cell Phones. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206804] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Surface Plasmon Resonance Chemical Sensing on Cell Phones. Angew Chem Int Ed Engl 2012; 51:11585-8. [DOI: 10.1002/anie.201206804] [Citation(s) in RCA: 164] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Indexed: 11/07/2022]
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Xiao P, Wang X, Sun J, Huang M, Chen X, Cao Z. Simultaneous measurement of electro-optical and converse-piezoelectric coefficients of PMN-PT ceramics. OPTICS EXPRESS 2012; 20:13833-13840. [PMID: 22714448 DOI: 10.1364/oe.20.013833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A new scheme is proposed to measure the electro-optical (EO) and converse-piezoelectric (CPE) coefficients of the PMN-PT ceramics simultaneously, in which the PMN-PT ceramics acts as the guiding layer of a symmetrical metal-cladding waveguide. As the applied electric field exerts on the waveguide, the effective refractive index (RI) (or synchronous angle) can be effectively tuned from a selected mode to another adjacent mode owing to the high sensitivity and the small spacing of the ultra-high order modes. Subsequently, a correlation between EO and CPE coefficients is established. With this correlation and the measurement of the effective RI change to the applied voltage, the quadratic EO and CPE coefficients of PMN-PT ceramics are obtained simultaneously. The obtained results are further checked by fitting the variations of effective RI to a quadratic function. Our measurement method can be extended to a wide range of other materials.
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Affiliation(s)
- Pingping Xiao
- Department of Physics, the State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, JiaoTong University, Shanghai, 200240, China
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Cao SH, Cai WP, Liu Q, Li YQ. Surface plasmon-coupled emission: what can directional fluorescence bring to the analytical sciences? ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2012; 5:317-36. [PMID: 22524220 DOI: 10.1146/annurev-anchem-062011-143208] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Surface plasmon-coupled emission (SPCE) arose from the integration of fluorescence and plasmonics, two rapidly expanding research fields. SPCE is revealing novel phenomena and has potential applications in bioanalysis, medical diagnostics, drug discovery, and genomics. In SPCE, excited fluorophores couple with surface plasmons on a continuous thin metal film; plasmophores radiate into a higher-refractive index medium with a narrow angular distribution. Because of the directional emission, the sensitivity of this technique can be greatly improved with high collection efficiency. This review describes the unique features of SPCE. In particular, we focus on recent advances in SPCE-based analytical platforms and their applications in DNA sensing and the detection of other biomolecules and chemicals.
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Affiliation(s)
- Shuo-Hui Cao
- Department of Chemistry and Key Laboratory of Analytical Sciences, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Feng J, Siu VS, Roelke A, Mehta V, Rhieu SY, Palmore GTR, Pacifici D. Nanoscale plasmonic interferometers for multispectral, high-throughput biochemical sensing. NANO LETTERS 2012; 12:602-609. [PMID: 22200183 DOI: 10.1021/nl203325s] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work, we report the design, fabrication, and characterization of novel biochemical sensors consisting of nanoscale grooves and slits milled in a metal film to form two-arm, three-beam, planar plasmonic interferometers. By integrating thousands of plasmonic interferometers per square millimeter with a microfluidic system, we demonstrate a sensor able to detect physiological concentrations of glucose in water over a broad wavelength range (400-800 nm). A wavelength sensitivity between 370 and 630 nm/RIU (RIU, refractive index units), a relative intensity change between ~10(3) and 10(6) %/RIU, and a resolution of ~3 × 10(-7) in refractive index change were experimentally measured using typical sensing volumes as low as 20 fL. These results show that multispectral plasmonic interferometry is a promising approach for the development of high-throughput, real-time, and extremely compact biochemical sensors.
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Affiliation(s)
- Jing Feng
- School of Engineering, Brown University, Providence, Rhode Island 02912, USA
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37
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Chen XJ, Sanchez-Gaytan BL, Qian Z, Park SJ. Noble metal nanoparticles in DNA detection and delivery. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2012; 4:273-90. [DOI: 10.1002/wnan.1159] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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38
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Nagase N, Terao K, Miyanishi N, Tamai K, Uchiyama N, Suzuki T, Takao H, Shimokawa F, Oohira F. Signal enhancement of protein binding by electrodeposited gold nanostructures for applications in Kretschmann-type SPR sensors. Analyst 2012; 137:5034-40. [DOI: 10.1039/c2an35574d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Rangełowa-Jankowska S, Jankowski D, Grobelna B, Gryczyński I, Gryczyński Z, Bogdanowicz R, Bojarski P. Surface-Plasmon-Coupled Emission of Rhodamine 110 in a Silica Nanolayer. Chemphyschem 2011; 12:2449-52. [DOI: 10.1002/cphc.201100252] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 06/25/2011] [Indexed: 11/12/2022]
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HERRANZ FERNANDO, ALMARZA ELENA, RODRÍGUEZ IGNACIO, SALINAS BEATRIZ, ROSELL YAMILKA, DESCO MANUEL, BULTE JEFFW, RUIZ-CABELLO JESÚS. The application of nanoparticles in gene therapy and magnetic resonance imaging. Microsc Res Tech 2011; 74:577-91. [PMID: 21484943 PMCID: PMC3422774 DOI: 10.1002/jemt.20992] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 12/31/2010] [Indexed: 12/20/2022]
Abstract
The combination of nanoparticles, gene therapy, and medical imaging has given rise to a new field known as gene theranostics, in which a nanobioconjugate is used to diagnose and treat the disease. The process generally involves binding between a vector carrying the genetic information and a nanoparticle, which provides the signal for imaging. The synthesis of this probe generates a synergic effect, enhancing the efficiency of gene transduction and imaging contrast. We discuss the latest approaches in the synthesis of nanoparticles for magnetic resonance imaging, gene therapy strategies, and their conjugation and in vivo application.
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Affiliation(s)
- FERNANDO HERRANZ
- Facultad de Farmacia, Departamento de Química Física II, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Universidad Complutense de Madrid, Madrid, Spain
- Laboratorio de Imagen Médica, Medicina y Cirugía Experimental, Hospital General Universitario “Gregorio Marañ ón,” Madrid, Spain
| | - ELENA ALMARZA
- División de Hematopoyesis y Terapia Génica, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), y Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - IGNACIO RODRÍGUEZ
- Facultad de Farmacia, Departamento de Química Física II, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Universidad Complutense de Madrid, Madrid, Spain
| | - BEATRIZ SALINAS
- Facultad de Farmacia, Departamento de Química Física II, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Universidad Complutense de Madrid, Madrid, Spain
- Laboratorio de Imagen Médica, Medicina y Cirugía Experimental, Hospital General Universitario “Gregorio Marañ ón,” Madrid, Spain
| | - YAMILKA ROSELL
- Facultad de Farmacia, Departamento de Química Física II, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Universidad Complutense de Madrid, Madrid, Spain
| | - MANUEL DESCO
- Laboratorio de Imagen Médica, Medicina y Cirugía Experimental, Hospital General Universitario “Gregorio Marañ ón,” Madrid, Spain
- Departamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Madrid, Spain
| | - JEFF W. BULTE
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Department of Biomedical Engineering, Department of Chemical & Biomolecular Engineering, Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - JESÚS RUIZ-CABELLO
- Facultad de Farmacia, Departamento de Química Física II, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Universidad Complutense de Madrid, Madrid, Spain
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41
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Yoon J, Seol KH, Song SH, Magnusson R. Critical coupling in dissipative surface-plasmon resonators with multiple ports. OPTICS EXPRESS 2010; 18:25702-25711. [PMID: 21164916 DOI: 10.1364/oe.18.025702] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We theoretically investigate resonant absorption in a multiple-port surface-plasmon polaritons (SPP) resonator near the condition of critical coupling at which internal loss is comparable to radiation coupling. We show that total absorption is obtainable in a multiple-port system by properly configuring multiple coherent lightwaves at the condition of critical coupling. We further derive analytic expressions for the partial absorbance at each port, the total absorbance, and their sum rule, which provide a non-perturbing method to probe coupling characteristics of highly localized optical modes. Rigorous simulation results modeling a surface-plasmon resonance grating in the multiple-order diffraction regime show excellent agreements with the analytic expressions.
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Affiliation(s)
- Jaewoong Yoon
- Department of Physics, Hanyang University, Seoul 133-791, Republic of Korea
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42
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Wang J, Coffey PD, Swann MJ, Yang F, Lu JR, Yang X. Optical extinction combined with phase measurements for probing DNA-small-molecule interactions using an evanescent waveguide biosensor. Anal Chem 2010; 82:5455-62. [PMID: 20524624 DOI: 10.1021/ac9027164] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We demonstrate the use of both optical extinction and phase measurements for probing the interactions between DNA and small molecules by dual polarization interferometry. On binding to DNA at the interface, mitoxantrone (MTX) and methylene blue (MB) induced reversible concentration-dependent optical extinction due to light absorption, which clearly revealed the association and dissociation of small molecules with DNA in real time. The binding constants of MTX-DNA and MB-DNA determined from the masses derived from optical extinction are 1.8 x 10(5) and 4.2 x 10(4) M(-1), respectively, and shown to be buffer salt concentration-dependent. Apart from optical extinction, phase measurements reflected the overall change of the interaction; namely, a combined result of the binding of small molecules and any changes in DNA structure. The masses derived from phase could be very different from those derived from optical extinction. The structural changes detected by phase measurements showed a contraction and densification of DNA upon intercalation by MTX or MB. The combination of optical extinction and phase measurements allows a detailed understanding of the interaction process.
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Affiliation(s)
- Juan Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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Barnett A, Goldys EM. Modeling of the SPR resolution enhancement for conventional and nanoparticle inclusive sensors by using statistical hypothesis testing. OPTICS EXPRESS 2010; 18:9384-97. [PMID: 20588785 DOI: 10.1364/oe.18.009384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
This paper describes a statistical approach that improves the detection accuracy in simulated experimental surface plasmon resonance (SPR) systems operated in a conventional angular readout scheme. Two SPR system have been investigated: a conventional one and a second one, containing absorbing metallic nanoparticles within the sensing layer. The modified Maxwell-Garnett model that optimally describes the experimental literature results was applied to modeling of the nanoparticle-inclusive sensor. Statistical hypothesis testing was then used to determine the limit of detection of the analyte and nanoparticles. Analyte concentrations as low as 1 pM, corresponding to the refractive index change of 4x10(-8) have been detected with optimized metal layers operated close to the nanoparticle absorption maximum. This is about one order of magnitude smaller than the values obtained in conventional SPR systems with nanoparticles and comparable to the phase-sensitive surface plasmon resonance detection.
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Affiliation(s)
- Anne Barnett
- MQ Photonics,Department of Physics and Engineering, Macquarie University,North Ryde 2109 NSW, Australia
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Chen X, Jiang K. Effect of aging on optical properties of bimetallic sensor chips. OPTICS EXPRESS 2010; 18:1105-1112. [PMID: 20173933 DOI: 10.1364/oe.18.001105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Bimetallic silver/gold sensor chips are attractive since they combine the advantages of both silver and gold layers. Optical properties of the bimetallic sensor chips show significant aging effects. Surface plasmon resonance (SPR) curves were produced on an SPR device and the time dependence of aging on SPR curves was studied. The results show that resonance angle and full width at half maximum (FWHM) of response curves increase with the aging time after film deposition. The performance of the sensor chips in terms of intrinsic sensitivity (IS) degrades with aging time. The underlying mechanism of the aging effect is explained as the growth of a silver oxide layer between gold and silver during the aging process.
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Affiliation(s)
- X Chen
- Bio-medical and Micro Engineering Research Center, School of Mechanical Engineering, University of Birmingham, UK.
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45
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Yamaguchi A, Hotta K, Teramae N. Optical Waveguide Sensor Based on a Porous Anodic Alumina/Aluminum Multilayer Film. Anal Chem 2008; 81:105-11. [DOI: 10.1021/ac8015642] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akira Yamaguchi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Kazuhiro Hotta
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Norio Teramae
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
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46
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Computer screen photo-excited surface plasmon resonance imaging. Anal Chim Acta 2008; 625:207-14. [PMID: 18724996 DOI: 10.1016/j.aca.2008.07.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Revised: 07/04/2008] [Accepted: 07/09/2008] [Indexed: 11/21/2022]
Abstract
Angle and spectra resolved surface plasmon resonance (SPR) images of gold and silver thin films with protein deposits is demonstrated using a regular computer screen as light source and a web camera as detector. The screen provides multiple-angle illumination, p-polarized light and controlled spectral radiances to excite surface plasmons in a Kretchmann configuration. A model of the SPR reflectances incorporating the particularities of the source and detector explain the observed signals and the generation of distinctive SPR landscapes is demonstrated. The sensitivity and resolution of the method, determined in air and solution, are 0.145 nm pixel(-1), 0.523 nm, 5.13x10(-3) RIU degree(-1) and 6.014x10(-4) RIU, respectively, encouraging results at this proof of concept stage and considering the ubiquity of the instrumentation.
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47
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Fu E, Ramsey SA, Yager P. Dependence of the signal amplification potential of colloidal gold nanoparticles on resonance wavelength in surface plasmon resonance-based detection. Anal Chim Acta 2007; 599:118-23. [PMID: 17765071 PMCID: PMC2267912 DOI: 10.1016/j.aca.2007.07.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2007] [Revised: 07/16/2007] [Accepted: 07/19/2007] [Indexed: 11/20/2022]
Abstract
We demonstrate the resonance wavelength-dependent signal of colloidal gold nanoparticles adsorbed to a planar gold surface in surface plasmon resonance (SPR)-based detection. Experimental measurements of the SPR signal as a function of particle surface coverage are presented for three different resonance wavelengths. The SPR signal due to the colloidal gold nanoparticles varies across the resonance wavelengths of 650 nm, 770 nm, and 920 nm. The experimental SPR curves show good agreement with the results of a Lorentz absorbance model at the lower particle surface coverages investigated. The results demonstrate an almost twofold signal difference for a subset of the experimental conditions explored.
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Affiliation(s)
- Elain Fu
- Department of Bioengineering, University of Washington, Seattle, WA 98195, United States.
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48
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Doskolovich LL, Kadomina EA, Kadomin II. Nanoscale photolithography by means of surface plasmon interference. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1464-4258/9/10/013] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Kanso M, Cuenot S, Louarn G. Roughness effect on the SPR measurements for an optical fibre configuration: experimental and numerical approaches. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1464-4258/9/7/008] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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50
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Rajan, Sharma AK, Gupta BD. Fibre optic sensor based on long-range surface plasmon resonance: a theoretical analysis. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1464-4258/9/7/020] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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