A flat lens with tunable phase gradient by using random access reconfigurable metamaterial.

Zhu, Weiming; Song, Qinghua; Yan, Libin; Zhang, Wu; Wu, Pin-Chieh; Chin, Lip Ket; Cai, Hong; Tsai, Din Ping et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

The first demonstration of an optofluidic metamaterial is reported where resonant properties of every individual metamolecule can be continuously tuned at will using a microfluidic system. This is called a random-access reconfigurable metamaterial, which is used to provide the first demonstration of a tunable flat lens with wavefront-reshaping capabilities.