Shaping 3D Path of Electromagnetic Waves Using Gradient-Refractive-Index Metamaterials
Journal article published in 2016 by
Wei Xiang Jiang,
Shuo Ge,
Tiancheng Han,
Shuang Zhang,
Muhammad Qasim Mehmood,
Cheng-Wei Qiu,
Tie Jun Cui
This paper is made freely available by the publisher.
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Abstract
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.