材料科学
超材料
手性(物理)
镜像对称
圆二色性
谐振器
偶极子
激发
圆极化
电介质
极化(电化学)
凝聚态物理
光电子学
光学
手征对称性
物理
结晶学
物理化学
化学
微带线
量子力学
Nambu–Jona Lasinio模型
夸克
作者
Meng Li,Eric Plum,Hua Li,Siyu Duan,Shaoxian Li,Quan Xu,Xueqian Zhang,Caihong Zhang,Chongwen Zou,Biaobing Jin,Jiaguang Han,Weili Zhang
标识
DOI:10.1002/adom.202000247
摘要
Abstract Mirrors are widely used for redirection of electromagnetic waves in optical systems, making them arguably the most irreplaceable optical component. Metamaterial‐based chiral mirrors, composed of a 2D‐chiral planar metallic structure backed by a conventional mirror, reflect one circular polarization without changing its handedness, while absorbing the other. Here, three types of switchable chiral mirror are demonstrated. Switching from a chiral mirror to either a conventional mirror, a handedness‐preserving mirror, or a chiral mirror of opposite handedness, is realized. These advances are underpinned by switching the handedness of 2D‐chiral metamaterial and the associated effect of circular conversion dichroism, which is reported here for the first time. Switching is achieved by exploiting the temperature‐activated dielectric‐to‐metal phase transition of vanadium dioxide to modify the symmetry and chirality of the metamaterial's resonators. Current distributions explain the temperature‐controlled optical properties by handedness‐selective excitation of reflective electric dipole and absorbing magnetic dipole modes.
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