Nanoplasmonic sensor for chemical measurements

R. Iovine, L. La Spada, L. Vegni

    Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

    15 Citations (Scopus)

    Abstract

    In this paper plasmonic nanoparticles arranged in an array configuration for the detection of glycerol concentration in aqueous solution, are presented. Glycerol concentration measurement is crucial for several application fields, such as biomedical engineering, medicine and biofuels fabrication. The detection of glycerol presence in aqueous solution is not simple, due to the fact that its refractive index shows small changes when different concentrations are considered. For this purpose, an LSPR (Localized Surface Plasmon Resonance) sensor, based on near field interaction of non-spherical dielectric-filled metallic particles (nanoshell) deposited on a silica substrate, is proposed. In this configuration an enhancement of the LSPR phenomenon with high sensitivity performances and a uniform near electric field distribution are obtained. In this way a shift in the position of the sensor response is related to the different concentration of the material under test. Numerical results, performed by full-wave simulations, show that the sensor can be used for the recognition of glycerol and its concentration in a highly accurate and sensitive way.

    Original languageEnglish
    Title of host publicationOptical Sensors 2013
    PublisherSPIE
    Volume8774
    ISBN (Print)9780819495761
    DOIs
    Publication statusPublished - 3 May 2013
    EventOptical Sensors 2013 - Prague, Czech Republic
    Duration: 15 Apr 201317 Apr 2013

    Conference

    ConferenceOptical Sensors 2013
    Country/TerritoryCzech Republic
    CityPrague
    Period15/04/1317/04/13

    Keywords

    • Glycerol measurements
    • LSPR
    • Nanoparticles
    • Nanoshell
    • Sensing

    ASJC Scopus subject areas

    • Applied Mathematics
    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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