Nanostructure-enhanced infrared spectroscopy

T Tanaka, T Yano, R Kato - Nanophotonics, 2022 - degruyter.com
T Tanaka, T Yano, R Kato
Nanophotonics, 2022degruyter.com
While infrared spectroscopy is a powerful technique that provides molecular information
such as chemical constituents and chemical structures of analytes, it suffers from low
absorption cross-section resulting in low sensitivity and poor signal-to-noise or signal-to-
background ratios. Surface-enhanced infrared absorption (SEIRA) spectroscopy, which is
supported by nanometer scale structures, is a promising technology to overcome these
problems in conventional infrared (IR) spectroscopy and enhances IR signals using the field …
Abstract
While infrared spectroscopy is a powerful technique that provides molecular information such as chemical constituents and chemical structures of analytes, it suffers from low absorption cross-section resulting in low sensitivity and poor signal-to-noise or signal-to-background ratios. Surface-enhanced infrared absorption (SEIRA) spectroscopy, which is supported by nanometer scale structures, is a promising technology to overcome these problems in conventional infrared (IR) spectroscopy and enhances IR signals using the field enhancement properties of surface plasmon resonance. Recently resonant SEIRA technique was proposed, and signal enhancement factor was significantly improved. In this review, we present an overview of the recent progresses on resonant SEIRA technologies including nanoantenna- and metamaterial-based SEIRA, and also SEIRA techniques with nanoimaging capabilities.
De Gruyter
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