volume | PIER Journals

Abstract

A tunable metasurface composed of multiple resonant units is proposed, with each unit containing a block of SrTiO₃ ferroelectric and a periodical copper-wire structure. The local transmission coefficient of the metasurface is controlled by voltagetuning the permittivity of SrTiO₃ in each resonant unit. The function of this tunable metasurface is demonstrated by simulating beam steering at the angles of 30˚ and 14.47˚, respectively; as well as beam focusing at the focal lengths of 2λ₀ and 4λ₀, respectively.

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Mr. Li-Hao Yeh

Prof. Jean-Fu Kiang