Dynamical beam manipulation based on 2-bit digitally-controlled coding metasurface
作者： Cheng Huang , Bo Sun , Wenbo Pan , Jianhua Cui , Xiaoyu Wu
DOI: 10.1038/SREP42302
关键词: Optics 、 Metamaterial 、 Beam (structure) 、 Electromagnetic radiation 、 Physics 、 PIN diode 、 Coding (social sciences) 、 Scattering
摘要: Recently, a concept of digital metamaterials has been proposed to manipulate field distribution through proper spatial mixtures metamaterial bits. Here, we present design 2-bit digitally-controlled coding metasurface that can effectively modulate the scattered electromagnetic wave and realize different far-field beams. Each meta-atom this integrates two pin diodes, by tuning their operating states, four phase responses 0, π/2, π, 3π/2, corresponding basic elements "00", "01", "10", "11", respectively. By designing sequence above element array, reflected beam be arbitrarily controlled. The demonstrated possess capability achieving deflection, multi-beam diffusion, dynamical switching these scattering patterns is completed programmable electric source.
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