折射率
纳米-
光学
材料科学
光电子学
计算机科学
物理
复合材料
作者
Shuqi Qiao,Xiaochen Zhang,Qinghua Liang,Yang Wang,Chang‐Yin Ji,Xiaowei Li,Lan Jiang,Shuai Feng,Honglian Guo,Jiafang Li
出处
期刊:Photonics Research
[The Optical Society]
日期:2024-01-29
卷期号:12 (2): 218-218
摘要
Plasmonic sensing technology has attracted considerable attention for high sensitivity due to the ability to effectively localize and manipulate light. In this study, we demonstrate a refractive index (RI) sensing scheme based on open-loop twisted meta-molecule arrays using the versatile nano-kirigami principle. RI sensing has the features of a small footprint, flexible control, and simple preparation. By engineering the morphology of meta-molecules or the RI of the ambient medium, the chiral surface lattice resonances can be significantly enhanced, and the wavelength, intensity, and sign of circular dichroism (CD) can be flexibly tailored. Utilizing the relation between the wavelength of the CD peak and the RI of the superstrate, the RI sensor achieves a sensitivity of 1133 nm/RIU. Additionally, we analyze these chiroptical responses by performing electromagnetic multipolar decomposition and electric field distributions. Our study may serve as an ideal platform for applications of RI measurement and provide new insights into the manipulation of chiral light–matter interactions.
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