石墨烯
材料科学
光学
电介质
光电子学
波长
硅
圆二色性
热的
灵敏度(控制系统)
物理
纳米技术
化学
工程类
气象学
电子工程
结晶学
作者
Shu Zong,Shijie Cai,Dongwen Zeng,Guiqiang Liu,Xiaoshan Liu,Wei Du,Zhengqi Liu
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2023-10-18
卷期号:48 (22): 5903-5903
被引量:5
摘要
Herein, a graphene-dielectric metasurface with the function of stably tunable and fast responding on the chiroptics is theoretically investigated and numerically demonstrated. Via utilizing the intrinsic thermo-optical effect of the silicon, the circular dichroism (CD) peak position can be linearly scaled with a spectral sensitivity of up to 0.06 nm/K by artificially adjusting the temperature. Moreover, a perfectly adjusting manipulation with a wavelength shift of full width at half maximum for the resonant spectrum and the simultaneously maintained CD values can be realized by a slight temperature variation of ∼0.8 K. Additionally, we take a graphene layer as the heating source to actually demonstrate the ultra-fast thermal generation. Applying an input voltage of 2 V to the graphene with only 10 µs can rapidly increase the metasurface temperature of up to 550 K. Such performances hold the platform with wide applications in functional chiroptics and optoelectronics.
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