Investigation on optical properties of BSA protein on single-layer graphene using terahertz spectroscopy technology

Shengxin Yang; Pengju Du; Yiwen Sun

doi:10.1117/12.2246258

3 November 2016 Investigation on optical properties of BSA protein on single-layer graphene using terahertz spectroscopy technology

Shengxin Yang, Pengju Du, Yiwen Sun

Author Affiliations +

Proceedings Volume 10030, Infrared, Millimeter-Wave, and Terahertz Technologies IV; 1003029 (2016) https://doi.org/10.1117/12.2246258
Event: SPIE/COS Photonics Asia, 2016, Beijing, China

Abstract

Terahertz (THz) spectroscopy is sensitive to probe several aspects of biological systems. In THz frequency, electrically controllable Drude-like intraband absorption makes graphene a promising platform for building graphene-based optoelectronic devices such as THz biosensor. In this work, BSA protein thin films were spin-coated and incubated on single-layer graphene. IR lasers with different power were used as the pump light to stimulate the sandwich-like sample respectively. The graphene monolayer complex conductivity was calculated using the transmission method. The novel optical properties of single-layer graphene and BSA protein on graphene in the THz range will be discussed in this paper.

Citation Download Citation

Shengxin Yang, Pengju Du, and Yiwen Sun "Investigation on optical properties of BSA protein on single-layer graphene using terahertz spectroscopy technology", Proc. SPIE 10030, Infrared, Millimeter-Wave, and Terahertz Technologies IV, 1003029 (3 November 2016); https://doi.org/10.1117/12.2246258

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