Three-dimensional printed and fluidic dielectric material optically transparent metasurface for switchable absorption and reflection functionality in microwave frequency region

초록

A metasurface is an artificial surface with extraordinary refraction, reflection, and absorption. These generally comprise periodic arrays of conductive patterns on dielectric materials at subwavelength scale. Various dielectric material based metasurfaces have been proposed recently, and this paper proposes a dielectric material optically transparent metasurface constructed from three-dimensionally printed and fluidic transparent materials. The proposed metasurface theoretically and experimentally demonstrates that it switches absorption and reflection at 5.3-15.2 GHz by injecting water into the fluidic channels. In addition, it is experimentally demonstrated that the proposed metasurface has transmission at 400-700 nm wavelength. The proposed metasurface could be deployed as transparent smart glasses or windows to control electromagnetic waves.

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