Broadband all-dielectric magnifying lens for far-field high-resolution imaging.

Jiang, Wei Xiang; Qiu, Cheng-Wei; Han, Tian Cheng; Cheng, Qiang; Ma, Hui Feng; Zhang, Shuang; Cui, Tie Jun · Adv Mater · 2013

basic_science · Level V

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Abstract

A transformation-optics magnifying lens is reported in the microwave frequency, which is made of inhomogeneous but isotropic dielectrics to reach impedance matching. The authors demonstrate the broadband subwavelength imaging performance and magnification factor experimentally from the far-field radiation patterns.