Shrinking the surface plasmon

Nanophotonics

article

Fan Yang¹  Kun Ding²  John Brian Pendry² 

[1] Department of Electrical and Computer Engineering, University of California;The Blackett Laboratory, Imperial College London

关键词: metamaterials;    surface plasmons;    transformation optics;   

DOI  :  10.1515/nanoph-2020-0361

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Surface plasmons at an interface between dielectric and metal regions can in theory be made arbitrarily compact normal to the interface by introducing extreme anisotropy in the material parameters. We propose a metamaterial structure comprising a square array of gold cylinders and tune the filling factor to achieve the material parameters we seek. Theory is compared to a simulation wherein the unit cell dimensions of the metamaterial are shown to be the limiting factor in the degree of localisation achieved.

【 授权许可】

CC BY