In 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.
Negative Refractive Index Metasurfaces for Enhanced Biosensing
Z. Jakšić,S. Vukovic,J. Matovic,D. Tanasković
Published 2010 in Materials
ABSTRACT
PUBLICATION RECORD
- Publication year
2010
- Venue
Materials
- Publication date
2010-12-23
- Fields of study
Medicine, Materials Science, Physics
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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