超材料
表面等离子共振
二氧化二钒
石墨烯
材料科学
生物传感器
光电子学
表面等离子体子
共振(粒子物理)
钒
等离子体子
纳米技术
纳米颗粒
物理
薄膜
原子物理学
冶金
作者
Jing Zhang,Xiang Zhou,Yiping Ding,Chenfei Yang,Qinxin Yue,Dongmei Deng,Shigen Ouyang,Xiangbo Yang
标识
DOI:10.1088/1361-6463/ad2476
摘要
Abstract We investigate the Goos-Hänchen GH shift in a hyperbolic metamaterial comprising graphene GHMM and vanadium dioxide V O 2 as the dielectric. Our study reveals that the dispersion type of GHMM can be controlled via the Fermi energy of graphene and temperature, modulating wavelength intervals. Notably, the GH shift in type I dispersion surpasses that in elliptical and type II dispersions. This suggests GH shift control by altering dispersion in GHMM. Thickness variations in V O 2 and the number of graphene/ V O 2 layers minimally affect GH shift. In contrast, graphene thickness significantly impacts GH shift, with thicker graphene yielding minor shifts. Meanwhile, we discover that substantial GH shift enhancement by surface plasmon resonance SPR excitation, with sensitivity to refractive index changes in the sensing layer. Based on the above conclusions, we theoretically propose a highly tunable biosensor uniting GHMM with SPR and use it to distinguish normal cells from cancer cells. This work advances optical biosensors and precise physical quantity measurements.
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