期刊
MATERIALS
卷 4, 期 1, 页码 1-36出版社
MDPI
DOI: 10.3390/ma4010001
关键词
plasmonics; optical metamaterials; artificial nanomembranes; long range surface plasmons polaritons; chemical sensors; biosensors
类别
资金
- Qatar National Research Fund: NPRP [09-462-1-074]
- Serbian Ministry of Science and Technology [TR 11027, OI 141031]
- European Community [228943]
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.
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