Polarization-insensitive unidirectional spoof surface plasmon polaritons coupling by gradient metasurface
Shi Hong-yu
1
, Zhang An-xue
1, 2, †,
, Chen Jian-zhong
1
, Wang Jia-fu
3
, Xia Song
4
, Xu Zhuo
4
The simulated reflectance of the designed gradient metasurface.