Photonics Research, Volume. 11, Issue 10, 1770(2023)
2D-to-3D buckling transformability enabled reconfigurable metamaterials for tunable chirality and focusing effect Editors' Pick
Fig. 1. Schematic illustration of the proposed reconfigurable metamaterial and its constituent meta-atom. (a) 3D reconfiguration mechanism and incidence polarization states of electromagnetic metamaterial. (b) Structural composition and geometrical parameters of the proposed meta-atoms A and B.
Fig. 2. Simulated deformation and transmittance of the proposed reconfigurable metamaterials. (a) Schematic reconfiguration of meta-atoms and their stress distributions calculated by FEA. Transmittance components of (b) planar metamaterial consisting of meta-atom A or B, and (c), (d) 3D deformed (
Fig. 3. Fabricated reconfigurable metamaterial samples and their measured transmittance spectra. (a) Fabricated metamaterial sample and its flexible characteristics (scale bars, 9 mm). (b) 2D and 3D morphologies of fabricated samples corresponding to meta-atoms A and B (scale bars, 18 mm). (c) Schematic and physical view of far-field measurement system. Measured transmittance components of metamaterial A in (d) planar state and (e) 3D deformed state, and metamaterial B in (f) planar state and (g) 3D deformed state.
Fig. 4. Physical mechanisms of the spin-dependent transmittance in the deformed meta-atoms. (a) Simulated surface current distributions and (b) calculated scattering power corresponding to electric dipole (
Fig. 5. Design and characterization of a reconfigurable metalens based on 2D-to-3D buckling. (a) Schematic illustration of structural composition and double-foci characteristics of free metalenses. (b) Circularly cross-polarized transmittance phases of undeformed meta-atoms A with various orientations. (c) Transmittance amplitude ratio of meta-atom A and meta-atom B at 10 GHz. (d) Calculated phase distribution on the metalens plane and overall exhibition of designed structure. (e) Full-wave simulated electric field intensity on the focusing plane
Fig. 6. Circularly cross-polarized transmittance of meta-atom A and B and their amplitude ratio under (a)
Fig. 7. Fabrication process of 2D-to-3D buckling deformable electromagnetic metamaterials.
Fig. 8. (a) Amplitude and (b) phase of 3D buckled metamaterial A of the co- and cross-polarized transmittance under
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Donghai Han, Wenkang Li, Tao Sun, Min Liu, Xiaoming Chen, Hongyu Shi, Zhengjie Fan, Fanqi Meng, Liuyang Zhang, Xuefeng Chen. 2D-to-3D buckling transformability enabled reconfigurable metamaterials for tunable chirality and focusing effect[J]. Photonics Research, 2023, 11(10): 1770
Category: Surface Optics and Plasmonics
Received: Jul. 18, 2023
Accepted: Aug. 20, 2023
Published Online: Oct. 7, 2023
The Author Email: Liuyang Zhang (liuyangzhang@xjtu.edu.cn)