Tailor the surface-wave properties of a plasmonic metal by a metamaterial capping.
We show that putting an ultra-thin anisotropic metamaterial layer on a plasmonic surface significantly enriches the surface wave (SW) characteristics of the system, which now supports SWs with transverse-magnetic (TM) and transverse-electric (TE) polarizations simultaneously. In addition, the generated SWs exhibit hybridized polarization characteristics in certain cases, and a SW band gap opens within a particular propagation direction range. We designed and fabricated a realistic structure based on the proposed model, and combined microwave experiments with full-wave simulations to verify the fascinating theoretical predictions. Several potential applications of the proposed system are discussed in the end.
State Key Laboratory of Surface Physics and Physics Department, Fudan University, Shanghai 200433, China.
Zhengyong
Z
Song
Xin
X
Li
Jiaming
J
Hao
Shiyi
S
Xiao
Meng
M
Qiu
Qiong
Q
He
Shaojie
S
Ma
Lei
L
Zhou
D003198:Computer Simulation; D008027:Light; D008420:Manufactured Materials / Q000032:analysis*; D008962:Models, Theoretical; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*