Journal ArticleDOI
Surface Plasmon Resonance for Biosensing: A Mini-Review
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A variety of configurations and formats have been devised to exploit the phenomenon of surface plasmon on metal dielectric interfaces for sensing a variety of significant analytes, such as pesticides and explosives, pathogens and toxins, and diseased tissue as discussed by the authors.Abstract:
A variety of configurations and formats have been devised to exploit the phenomenon of surface plasmon on metal dielectric interfaces for sensing a variety of significant analytes, such as pesticides and explosives, pathogens and toxins, and diseased tissue. Researchers continue to aim at detecting lower concentrations in smaller volumes of samples in real time. A new research field, called nanoplasmnonics, has emerged in this regard.read more
Citations
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Journal ArticleDOI
Clinical diagnosis of type I allergy by means of SPR imaging with less than a microliter of peripheral blood
Yuhki Yanase,Takaaki Hiragun,Tetsuji Yanase,Tomoko Kawaguchi,Kaori Ishii,Nobutaka Kumazaki,Takayuki Obara,Michihiro Hide +7 more
TL;DR: The employment of human IgE receptor-expressing mast cell lines sensitized with serum and collected and stored from less than a microliter of patient’s blood allowed us to detect specific reactions of RBL-48 cells in response to antigens.
Journal ArticleDOI
Toward optical sensing with hyperbolic metamaterials
Tom G. Mackay,Tom G. Mackay +1 more
TL;DR: In this paper, a possible means of optical sensing, based on a porous hyperbolic material that is infiltrated by a fluid containing an analyte to be sensed, was theoretically investigated.
Journal ArticleDOI
Diverse bio-sensing and therapeutic applications of plasmon enhanced nanostructures
TL;DR: In this paper , a comprehensive review of recent advances in the field of plasmonic particle anisotropy and nanostructures for targeted biosensing and therapeutic research is presented.
Portable Microfluidic Integrated Plasmonic Platform for Pathogen
Detection Tokel,Umit Hakan Yildiz,Fatih Inci,Naside Gozde Durmus,Okan Oner Ekiz,Burak Turker,Can Cetin,Shruthi Rao,Kaushik Sridhar,Nalini Natarajan,Hadi Shafiee,Aykutlu Dana +11 more
TL;DR: A portable, multiplex, inexpensive microfluidic-integrated surface plasmon resonance (SPR) platform that detects and quantifies bacteria, i.e., Escherichia coli and Staphylococcus aureus rapidly and could potentially be applicable to capture and detect other pathogens at the POC and primary care settings.
Journal ArticleDOI
Enhancing the sensitivity of surface-plasmon resonance sensors
Abstract: Surface-plasmon-resonance (SPR) sensing devices have attracted tremendous interest in the past decade, both from a fundamental-physics perspective and as highly sensitive devices for optical detection of small biological or chemical entities in liquids.1 The two main sensor types are based on extended and localized surface plasmons (SPs).2 The former are considered more classical since they have been known longer. Extended SPs are longitudinal electromagnetic (EM) waves in a 2D electron gas on the surface of metals. Localized SPs, on the other hand, have become more mainstream only in the last two decades. They occur in metallic structures with dimensions less than half the wavelength of the exciting EM wave. The incident EM field must—in either case—be polarized in the plane of incidence. This is referred to as transverse-magnetic (TM) polarization. A variety of nanophotonic structures3 can be used for SPR generation, including spherical nanoparticles and nanoshells, nanorods, nanopyramids, nanoholes in metallic films, subwavelength metallic grids, and nanorods as sculptured thin films,4, 5 among others. Figure 1(a) shows the most useful (‘Kretschmann’) configuration employing extended SPR. The EM field peaks at the metal-analyte interface and decays sharply within only a fraction of a wavelength, which is hence referred to as an ‘evanescent’ field. The EM-field distribution is the most important concept for SPR-sensing devices since the detection of molecules is done through their interaction with the evanescent field. The interaction may be described mathematically as the overlap integral between the evanescent field and the intrinsic molecular field. The effect of the molecules on the measured optical signal is proportional to the overlap volume. Hence, to increase the sensitivity of SPR sensors one needs to increase Figure 1. Surface-plasmon-resonance (SPR) excitation on the basis of (a) the standard Kretschmann configuration and (b) with addition of a top nanodielectric layer.
References
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Journal ArticleDOI
Localized Surface Plasmon Resonance Spectroscopy and Sensing
TL;DR: This review describes recent fundamental spectroscopic studies that reveal key relationships governing the LSPR spectral location and its sensitivity to the local environment, including nanoparticle shape and size and introduces a new form of L SPR spectroscopy, involving the coupling between nanoparticle plasmon resonances and adsorbate molecular resonances.
Journal ArticleDOI
Surface plasmon resonance sensors: review
TL;DR: Main application areas are outlined and examples of applications of SPR sensor technology are presented and future prospects of SPR technology are discussed.
Book
Surface Plasmons on Smooth and Rough Surfaces and on Gratings
TL;DR: In this article, surface plasmons on smooth surfaces were used for light scattering at rough surfaces without an ATR device, and surface plasmon on gratings for enhanced roughness.
Journal ArticleDOI
Surface raman spectroelectrochemistry: Part I. Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode
TL;DR: In this article, the authors verified the remarkable sensitivity of Raman spectroscopy for the study of adsorbed pyridine on a silver surface, and extended its applicability to other nitrogen heterocycles and amines.
Journal ArticleDOI
Notizen: Radiative Decay of Non Radiative Surface Plasmons Excited by Light
E. Kretschmann,H. Raether +1 more
TL;DR: In this paper, it has been shown that the non-radiative mode excited by light can also radiate under certain conditions if they are excited by electrons (grazing incidence of electrons on a rough surface or at normal incidence on a grating).
Related Papers (5)
Notizen: Radiative Decay of Non Radiative Surface Plasmons Excited by Light
E. Kretschmann,H. Raether +1 more