Acta Photonica Sinica, Volume. 48, Issue 12, 1248005(2019)
Ultra-sensitive Bio-sensor Based on Trapped Mode All-dielectric Metasurface Coating with Graphene Layer
It has proposed an all-dielectric metasurface consisting of subwavelength particles, which supports "trapped" mode after the introduction of properly symmetry-breaking in the silicon meta-atoms. Combining the monolayer graphene with all-dielectric metasurface that enables to detect nucleic acids such as DNA and RNA. it has been found that the proposed metasurface is ultra-sensitive to the surrounding environment, its sensitivity in sensing detection can be up to 173 nm/RIU, with the corresponding quality factor of 14 416 RIU-1, which exhibits excellent biosensing performance by comparing the resonant state in the transmission spectrum. It indicates all-dielectric metasurfaces could be a promising way and platform to realize ultra-sensitive bio-sensors.
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Xue-song DENG, Ming FANG, Xin-gang REN, Zhi-xiang HUANG, Xian-liang WU. Ultra-sensitive Bio-sensor Based on Trapped Mode All-dielectric Metasurface Coating with Graphene Layer[J]. Acta Photonica Sinica, 2019, 48(12): 1248005
Received: Sep. 11, 2019
Accepted: Oct. 18, 2019
Published Online: Mar. 17, 2020
The Author Email: FANG Ming (mingfang@ahu.edu.cn)