Rotationally reconfigurable metamaterials based on moiré phenomenon

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Abstract
Exploiting moiré interference, we make a new type of reconfigurable metamaterials and study their transmission tunability for incident electromagnetic waves. The moiré pattern is formed by overlapping two transparent layers, each of which has a periodic metallic pattern, and the cluster size of the resulting moiré pattern can be varied by changing the relative superposition angle of the two layers. In our reconfigurable metamaterials, both the size and structural shape of the unit cell can be varied simultaneously through moiré interference. We show that the transmission of electromagnetic waves can be controlled from 90% to 10% at 11 GHz by experiments and numerical simulation. The reconfigurable metamaterial proposed here can be applied in bandpass filters and tunable modulation devices.
Funding Information
  • Basic Science Research Program
  • National Research Foundation of Korea (NRF)
  • Ministry of Education (2012R1A1A4A01013955, 2013R1A1A2065357, NRF-2014R1A1A2057732)
  • Center for Advanced Meta-Materials (2014M3A6B3063709)
  • Ministry of Science, ICT and Future Planning as Global Frontier Project
  • National Research Foundation of Korea (NRF)
  • Korea government (MSIP) (2013R1A2A1A09015677)

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