Journal ArticleDOI
Sensitivity‐enhancement methods for surface plasmon sensors
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TLDR
In this paper, a review of sensitivity-enhancement techniques for surface plasmon resonance (SPR) sensors focusing both on the physical transduction mechanisms and the system performance is presented.Abstract:
Surface plasmon resonance (SPR) sensors have been a mature technology for more than two decades now, however, recent investigations show continuous enhancement of their sensitivity and their lower detection limit. Together with the recent investigations in localized SPR phenomena, extraordinary optical transmission through nanoapertures in metals, and surface-enhanced spectroscopies, drastic developments are expected to revolutionize the field of optical biosensing. Sensitivity-enhancement (SE) techniques are reviewed focusing both on the physical transduction mechanisms and the system performance. In the majority of cases the SE is associated with the enhancement of the electromagnetic field overlap integral describing the interaction energy within the analyte. Other important mechanisms are the interaction between plasmons and excitons and between the analyte molecules and the metal surface. The lower detection limit can be reduced significantly if systems with high signal-to-noise ratio are used such as common-path interferometry, ellipsometry or polarimetry systems.read more
Citations
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Journal ArticleDOI
Nanomaterials enhanced surface plasmon resonance for biological and chemical sensing applications
TL;DR: The latest trend and challenges in engineering and applications of nanomaterials-enhanced surface plasmon resonance sensors for detecting "hard-to-identify" biological and chemical analytes are reviewed and discussed.
Journal ArticleDOI
Review of plasmonic fiber optic biochemical sensors: improving the limit of detection.
TL;DR: An overview of the technologies used to implement surface plasmon resonance (SPR) effects into fiber-optic sensors for chemical and biochemical applications and a survey of results reported over the last ten years is presented.
Journal ArticleDOI
Perspectives on oblique angle deposition of thin films: From fundamentals to devices
TL;DR: In this article, the electron beam assisted evaporation technique is analyzed along with other methods operating at oblique angles, including, among others, magnetron sputtering and pulsed laser or ion beam-assisted deposition techniques.
Journal ArticleDOI
A primer on surface plasmon-polaritons in graphene
TL;DR: In this paper, the properties of surface plasmons-polaritons in graphene and four possible ways of coupling electromagnetic radiation in the terahertz (THz) spectral range to this type of surface waves were discussed.
Journal ArticleDOI
Sensitivity Enhancement of Transition Metal Dichalcogenides/Silicon Nanostructure-based Surface Plasmon Resonance Biosensor
Qingling Ouyang,Shuwen Zeng,Shuwen Zeng,Li Jiang,Liying Hong,Gaixia Xu,Gaixia Xu,Xuan-Quyen Dinh,Jun Qian,Sailing He,Junle Qu,Philippe Coquet,Philippe Coquet,Ken-Tye Yong,Ken-Tye Yong +14 more
TL;DR: The results show that silicon nanosheet and MX2 layers can be served as effective light absorption medium under resonance conditions and show much better performance than that of the conventional sensing scheme where pure Au thin film is used.
References
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Journal ArticleDOI
Extraordinary optical transmission through sub-wavelength hole arrays
Thomas W. Ebbesen,Thomas W. Ebbesen,Henri J. Lezec,H. F. Ghaemi,Tineke Thio,Peter A. Wolff,Peter A. Wolff +6 more
TL;DR: In this article, the optical properties of submicrometre cylindrical cavities in metallic films were explored and it was shown that arrays of such holes display highly unusual zero-order transmission spectra at wavelengths larger than the array period, beyond which no diffraction occurs.
Journal ArticleDOI
Biosensing with plasmonic nanosensors
TL;DR: This paper introduces the localized surface plasmon resonance (LSPR) sensor and describes how its exquisite sensitivity to size, shape and environment can be harnessed to detect molecular binding events and changes in molecular conformation.
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.
Journal ArticleDOI
Surface-enhanced spectroscopy
TL;DR: The surface-enhanced Raman scattering (SERS) effect was first discovered by Fleischmann, Van Duyne, Creighton, and Creighton as discussed by the authors, who showed that molecules adsorbed on specially prepared silver surfaces produce a Raman spectrum that is at times a millionfold more intense than expected.
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