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Negative Refractive Index Metasurfaces for Enhanced Biosensing
AbstractIn this paper we review some metasurfaces with negative values of effective refractive index, as scaffolds for a new generation of surface plasmon polariton-based biological or chemical sensors. The electromagnetic properties of a metasurface may be tuned by its full immersion into analyte, or by the adsorption of a thin layer on it, both of which change its properties as a plasmonic guide. We consider various simple forms of plasmonic crystals suitable for this purpose. We start with the basic case of a freestanding, electromagnetically symmetrical plasmonic slab and analyze different ultrathin, multilayer structures, to finally consider some two-dimensional “wallpaper” geometries like split ring resonator arrays and fishnet structures. A part of the text is dedicated to the possibility of multifunctionalization where a metasurface structure is simultaneously utilized both for sensing and for selectivity enhancement. Finally we give an overview of surface-bound intrinsic electromagnetic noise phenomena that limits the ultimate performance of a metasurfaces sensor.
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Jakšić, Z.; Vuković, S.; Matovic, J.; Tanasković, D. Negative Refractive Index Metasurfaces for Enhanced Biosensing. Materials 2011, 4, 1-36.View more citation formats
Jakšić Z, Vuković S, Matovic J, Tanasković D. Negative Refractive Index Metasurfaces for Enhanced Biosensing. Materials. 2011; 4(1):1-36.Chicago/Turabian Style
Jakšić, Zoran; Vuković, Slobodan; Matovic, Jovan; Tanasković, Dragan. 2011. "Negative Refractive Index Metasurfaces for Enhanced Biosensing." Materials 4, no. 1: 1-36.
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