Metamaterial enhanced ultrasensitive spectroscopy techniques

Takuo Tanaka

doi:10.1117/12.2596666

1 August 2021 Metamaterial enhanced ultrasensitive spectroscopy techniques

Takuo Tanaka

Proceedings Volume 11803, Enhanced Spectroscopies and Nanoimaging 2021; 118030C (2021) https://doi.org/10.1117/12.2596666
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

Experimental and theoretical studies of a metamaterial enhanced vibrational spectroscopy techniques are presented. We design a metamaterial consisting of vertically oriented metal insulator metal (MIM) structures with a 25 nm gap sandwiched between two metal films. By using vertical-oriented MIM structure we successfully detected 20 ppm concentration of carbon dioxide and butane molecules with negligible background noise. Metasmaterial structure was also applied for the vibrational CD spectroscopy by exploiting super-chiral field. We experimentally demonstrate high-sensitive mirror symmetric vibrational CD spectra of D- and L-alanine depending on the handedness of the metamaterial structures.

Conference Presentation

Citation Download Citation

Takuo Tanaka "Metamaterial enhanced ultrasensitive spectroscopy techniques", Proc. SPIE 11803, Enhanced Spectroscopies and Nanoimaging 2021, 118030C (1 August 2021); https://doi.org/10.1117/12.2596666

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