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http://hdl.handle.net/10397/88091
Title: | Tunable absorption characteristics in multilayered structures with graphene for biosensing | Authors: | Jin, L Zhou, J Lai, PX |
Issue Date: | Jul-2020 | Source: | Journal of innovative optical health sciences, July 2020, v. 13, no. 4, 2050017, p. 1-11 | Abstract: | Graphene derivatives, possessing strong Raman scattering and near-infrared absorption intrinsically, have boosted many exciting biosensing applications. The tunability of the absorption characteristics, however, remains largely unexplored to date. Here, we proposed a multilayer configuration constructed by a graphene monolayer sandwiched between a buffer layer and one-dimensional photonic crystal (1DPC) to achieve tunable graphene absorption under total internal reflection (TIR). It is interesting that the unique optical properties of the buffer-graphene-1DPC multilayer structure, the electromagnetically induced transparency (EIT)-like and Fanolike absorptions, can be achieved with pre-determined resonance wavelengths, and furtherly be tuned by adjusting either the structure parameters or the incident angle of light. Theoretical analyses demonstrate that such EIT- and Fano-like absorptions are due to the interference of light in the multilayer structure and the complete transmission produced by the evanescent wave resonance in the configuration. The enhanced absorptions and the huge electrical field enhancement effect exhibit potentials for broad applications, such as photoacoustic imaging and Raman imaging. | Keywords: | Graphene Photonic crystal Electromagnetically induced transparency Absorption |
Publisher: | World Scientific | Journal: | Journal of innovative optical health sciences | ISSN: | 1793-5458 | DOI: | 10.1142/S1793545820500170 | Rights: | © The Author(s) This is an Open Access article. It is distributed under the terms of the Creative Commons Attribution 4.0 (CC-BY) License (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work is permitted, provided the original work is properly cited. The following publication Jin, L., Zhou, J., & Lai, P. X. (2020). Tunable absorption characteristics in multilayered structures with graphene for biosensing. Journal of Innovative Optical Health Sciences, 13(4), 1-11 is available at https://dx.doi.org/10.1142/S1793545820500170 |
Appears in Collections: | Journal/Magazine Article |
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