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Title: Acoustic metasurface by layered concentric structures
Authors: Liang, S 
Liu, T 
Gao, H 
Gu, Z 
An, S 
Zhu, J 
Issue Date: Dec-2020
Source: Physical review research, Dec. 2020, v. 2, no. 4, 043362, p. 043362-1-043362-9
Abstract: Metasurface-based acoustic wave-front manipulation with broad bandwidth and low transmission loss shows great significance in high-intensity applications such as ultrasonic therapy, acoustic tweezers, and haptics. By taking advantage of the helical-structured metamaterials and their concentrically layered arrangement, we present a systematic strategy to construct two-dimensional transmissive acoustic metasurfaces that possess matched impedance to the background medium and simple governing parameters. As a proof of concept, a concentrically layered circular metalens supporting conversion from spherical wave to plane wave is designed and experimentally demonstrated. It is capable of operating in more than one octave band with high transmission. This work could inspire more intriguing and flexible designs in three-dimensional wave control, which may enhance the practicality of acoustic metasurfaces.
Publisher: American Physical Society
Journal: Physical review research 
EISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.2.043362
Rights: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license ( Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
The following publication Liang, S., Liu, T., Gao, H., Gu, Z., An, S., & Zhu, J. (2021). Acoustic metasurface by layered concentric structures, Physical Review Research, 2(4), 043362, 043362-1-043362-9 is available at
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