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      Overview of the Characteristics of Micro- and Nano-Structured Surface Plasmon Resonance Sensors

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          Abstract

          The performance of bio-chemical sensing devices has been greatly improved by the development of surface plasmon resonance (SPR) based sensors. Advancements in micro- and nano-fabrication technologies have led to a variety of structures in SPR sensing systems being proposed. In this review, SPR sensors (from typical Kretschmann prism configurations to fiber sensor schemes) with micro- or nano-structures for local light field enhancement, extraordinary optical transmission, interference of surface plasmon waves, plasmonic cavities, etc. are discussed. We summarize and compare their performances and present guidelines for the design of SPR sensors.

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          Biosensing with plasmonic nanosensors.

          Jeffrey N Anker, W. Hall, Olga Lyandres … (2008)
          Recent developments have greatly improved the sensitivity of optical sensors based on metal nanoparticle arrays and single nanoparticles. We introduce the localized surface plasmon resonance (LSPR) sensor and describe how its exquisite sensitivity to size, shape and environment can be harnessed to detect molecular binding events and changes in molecular conformation. We then describe recent progress in three areas representing the most significant challenges: pushing sensitivity towards the single-molecule detection limit, combining LSPR with complementary molecular identification techniques such as surface-enhanced Raman spectroscopy, and practical development of sensors and instrumentation for routine use and high-throughput detection. This review highlights several exceptionally promising research directions and discusses how diverse applications of plasmonic nanoparticles can be integrated in the near future.
          Article 0 comments Cited 1294 times – based on 0 reviews     Review now
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            Nanostructured plasmonic sensors.

            Matthew Stewart, Christopher R. Anderton, Lucas B. Thompson … (2008)
            Article 0 comments Cited 381 times – based on 0 reviews     Review now
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              Plasmonic nanorod metamaterials for biosensing.

              A. V. Kabashin, P. Evans, S Pastkovsky … (2009)
              Label-free plasmonic biosensors rely either on surface plasmon polaritons or on localized surface plasmons on continuous or nanostructured noble-metal surfaces to detect molecular-binding events. Despite undisputed advantages, including spectral tunability, strong enhancement of the local electric field and much better adaptability to modern nanobiotechnology architectures, localized plasmons demonstrate orders of magnitude lower sensitivity compared with their guided counterparts. Here, we demonstrate an improvement in biosensing technology using a plasmonic metamaterial that is capable of supporting a guided mode in a porous nanorod layer. Benefiting from a substantial overlap between the probing field and the active biological substance incorporated between the nanorods and a strong plasmon-mediated energy confinement inside the layer, this metamaterial provides an enhanced sensitivity to refractive-index variations of the medium between the rods (more than 30,000 nm per refractive-index unit). We demonstrate the feasibility of our approach using a standard streptavidin-biotin affinity model and record considerable improvement in the detection limit of small analytes compared with conventional label-free plasmonic devices.
              Article 0 comments Cited 357 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Sensors (Basel)
                Title: Sensors (Basel, Switzerland)
                Publisher: Molecular Diversity Preservation International (MDPI)
                ISSN (Electronic): 1424-8220
                Publication date Collection: 2011
                Publication date (Electronic): 27 January 2011
                Volume: 11
                Issue: 2
                Pages: 1565-1588
                Affiliations
                National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Gwanak-Gu Gwanakro 599, Seoul 151-744, Korea; E-Mails: sookyoungroh@ 123456gmail.com (S.R.); taerinc@ 123456gmail.com (T.C.)
                Author notes
                [* ]Author to whom correspondence should be addressed; E-Mail: byoungho@ 123456snu.ac.kr ; Tel.: +82-2-880-7245; Fax: +82-2-873-9953.
                Article
                Publisher ID: sensors-11-01565
                DOI: 10.3390/s110201565
                PMC ID: 3274020
                PubMed ID: 22319369
                SO-VID: 7f693527-cac3-43fd-8349-5c0b2d1d884a
                Copyright © © 2011 by the authors; licensee MDPI, Basel, Switzerland.
                License:

                This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license ( http://creativecommons.org/licenses/by/3.0/).

                History
                Date received : 1 December 2011
                Date revision received : 11 January 2011
                Date accepted : 24 December 2011
                Categories
                Subject: Review

                ScienceOpen disciplines: Biomedical engineering
                Keywords: surface plasmon resonance,nanostructure,sensor,localized surface plasmon
                Data availability:
                ScienceOpen disciplines: Biomedical engineering
                Keywords: surface plasmon resonance, nanostructure, sensor, localized surface plasmon

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