Shaping 3D Path of Electromagnetic Waves Using Gradient-Refractive-Index Metamaterials

Wei Xiang Jiang; Shuo Ge; Tiancheng Han; Shuang Zhang; Muhammad Qasim Mehmood; Cheng-Wei Qiu; Tie Jun Cui

doi:10.1002/advs.201600022

Shaping 3D Path of Electromagnetic Waves Using Gradient-Refractive-Index Metamaterials

Adv Sci (Weinh). 2016 Mar 15;3(8):1600022. doi: 10.1002/advs.201600022. eCollection 2016 Aug.

Authors

Wei Xiang Jiang¹, Shuo Ge², Tiancheng Han³, Shuang Zhang⁴, Muhammad Qasim Mehmood⁵, Cheng-Wei Qiu⁵, Tie Jun Cui⁶

Affiliations

¹ State Key Laboratory of Millimeter Waves Southeast University Nanjing 210096 P.R. China; Synergetic Innovation Center of Wireless Communication Technology Nanjing 210096 P.R. China.
² State Key Laboratory of Millimeter Waves Southeast University Nanjing 210096 P.R. China.
³ School of Physical Science and Technology Southwest University Chongqing 400715 P.R. China; Department of Electrical and Computer Engineering National University of Singapore Singapore 119620 Singapore.
⁴ School of Physics and Astronomy University of Birmingham Edgbaston Birmingham B15 2TT UK.
⁵ Department of Electrical and Computer Engineering National University of Singapore Singapore 119620 Singapore.
⁶ State Key Laboratory of Millimeter Waves Southeast University Nanjing 210096 P.R. China; Cooperative Innovation Centre of Terahertz Science No. 4, North Jianshe Road Chengdu 610054 P.R. China.

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.

Keywords: high‐resolution imaging; matched solid immersion lens; metamaterial; path shaping; transformation optics.