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Reflected continuously tunable acoustic metasurface with rotatable space coiling-up structure.
- Source :
-
Physics Letters A . Feb2022, Vol. 426, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • We propose a new design for continuous tunable acoustic metasurface. • The unit of metasurface is a segment of rotatable space-coiling structure. • We utilize advantage of the anisotropic properties of the unit. • The even-order standing wave modes in waveguide can be used. • A model is proposed to analysis and give a theoretical guidance. In this paper, we propose a continuously tunable acoustic metasurface composed of identical anisotropic resonant units, each of which contains a rigid pedestal and a rotatable inclusion with space coiling-up structure. The metasurface can manipulate the reflected phase by adjusting the rotational angle of inclusion. The theoretical analysis shows that the polarization-dependent phase change can be induced by the even-order standing wave modes inside inclusion. By utilizing the rotatable inclusion, we design a tunable acoustic carpet cloaking device, which works with a wide range for the incident angle. When incident waves come from different directions, the cloaking effect can be obtained by arranging the rotational angle of each inclusion. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CLOAKING devices
*SOUND design
Subjects
Details
- Language :
- English
- ISSN :
- 03759601
- Volume :
- 426
- Database :
- Academic Search Index
- Journal :
- Physics Letters A
- Publication Type :
- Academic Journal
- Accession number :
- 154618011
- Full Text :
- https://doi.org/10.1016/j.physleta.2021.127891