Open AccessShaping 3D Path of Electromagnetic Waves Using Gradient‐Refractive‐Index Metamaterials
Author(s) -
Jiang Wei Xiang,
Ge Shuo,
Han Tiancheng,
Zhang Shuang,
Mehmood Muhammad Qasim,
Qiu ChengWei,
Cui Tie Jun
Publication year - 2016
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201600022
Subject(s) - superlens , metamaterial , optics , lens (geology) , transformation optics , negative refraction , refractive index , physics , refraction , electromagnetic radiation , narrowband , diffraction
An all‐dielectric semispherical lens with functions in shaping 3D wave‐propagation paths is proposed and experimentally verified. When radiation sources are placed in the central region, the lens behaves as a magnifying device to resolve the sources in subwavelength scale; while when the electromagnetic waves impinge on the semispherical lens from outside, they will be guided spirally inward.