New trends in optical resonant bio-chemical sensing
Authors: Baratto C., Faglia G, Carletti L., De Angelis C.
Autors Affiliation: CNR-INO, DII-UNIVERSITà DI BRESCIA
Abstract: The development of innovative bio-chemical
sensors is of great importance to make new devices available to
the market. In the current paper, we review recent trends on
optical resonant sensors that may involve plasmonic or
geometrical resonances. In all cases, resonance is activated by
excitation with electromagnetic light of proper wavelength.
Plasmonic hot electrons, obtained by shining light on metal
nanoparticle decorated metal oxides, can bring new effects in
physicochemical processes, affecting electrical and optical
properties (absorption/transmission, Surface Enhanced Raman
Spectroscopy SERS). Geometrical resonances are involved in
Mie and Whispering Gallery Modes (WGM) based sensing,
including metasurfaces for optical detection of molecules and
nonlinear effects in metamaterials.
Journal/Review: IEEE SENSORS JOURNAL
Volume: 1 Pages from: 1 to: 12
KeyWords: metal oxides , nonlinear optics, plasmonic, sensing, WGM, SERSDOI: 10.1109/JSEN.2021.3055423