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A Tunable Zig-Zag Reflective Elastic Metasurface
| Content Provider | MDPI |
|---|---|
| Author | Xu, Zhu-Long Yu, Shi-Bo Liu, Junjie Chuang, Kuo-Chih |
| Copyright Year | 2022 |
| Description | In this paper, inspired by origami structures, we offer a very simple tuning method to overcome the limitations of general elastic metasurfaces, where only a certain functionality at a certain frequency range can be achieved, by designing a reflective metasurface based on foldable/deployable zig-zag structures. By utilizing peg/screw connections, the folding angles of the zig-zag structures can be easily tuned while also being fixable. By tuning the folding angle, the subunit of the zig-zag metasurface can cover a 2π phase shift span and the phase shift can be tuned continuously, and almost linearly, with respect to the folding angle. With a simple folding motion, the tunable reflective metasurface can steer reflected flexural waves in different directions and focus-reflected flexural waves with different focal distances. In addition to demonstrating tunable performance, the mechanism that associates the changing speed of the phase shift is explained. The proposed tunable zig-zag elastic metasurface provides a new way to design reconfigurable metamaterials/metasurfaces. |
| Starting Page | 1170 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst12081170 |
| Journal | Crystals |
| Issue Number | 8 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-20 |
| Access Restriction | Open |
| Subject Keyword | Crystals Tunable Metasurfaces Focusing Steering Zig-zag Structures |
| Content Type | Text |
| Resource Type | Article |
