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2017 ; 17
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): ä Nephropedia Template TP
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English Wikipedia
Metamaterials and Metasurfaces for Sensor Applications
#MMPMID28749422
Lee Y
; Kim SJ
; Park H
; Lee B
Sensors (Basel)
2017[Jul]; 17
(8
): ä PMID28749422
show ga
Electromagnetic metamaterials (MMs) and metasurfaces (MSs) are artificial media
and surfaces with subwavelength separations of meta-atoms designed for anomalous
manipulations of light properties. Owing to large scattering cross-sections of
metallic/dielectric meta-atoms, it is possible to not only localize strong
electromagnetic fields in deep subwavelength volume but also decompose and
analyze incident light signal with ultracompact setup using MMs and MSs. Hence,
by probing resonant spectral responses from extremely boosted interactions
between analyte layer and optical MMs or MSs, sensing the variation of refractive
index has been a popular and practical application in the field of photonics.
Moreover, decomposing and analyzing incident light signal can be easily achieved
with anisotropic MSs, which can scatter light to different directions according
to its polarization or wavelength. In this paper, we present recent advances and
potential applications of optical MMs and MSs for refractive index sensing and
sensing light properties, which can be easily integrated with various electronic
devices. The characteristics and performances of devices are summarized and
compared qualitatively with suggestions of design guidelines.