Acoustic insulation and directional refraction of dual-functional pentamode metasurface
Acoustic metasurface is a membrane-like two-dimensional metamaterial with subwavelength thickness and special acoustic properties. Based on generalized Snell’s laws, acoustic metasurface produce a series of unconventional acoustic phenomena including anomalous refraction/reflection. This paper propo...
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Published in | Applied physics. A, Materials science & processing Vol. 130; no. 7 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
01.07.2024
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Acoustic metasurface is a membrane-like two-dimensional metamaterial with subwavelength thickness and special acoustic properties. Based on generalized Snell’s laws, acoustic metasurface produce a series of unconventional acoustic phenomena including anomalous refraction/reflection. This paper proposes a dual-functional acoustic metasurface composed of asymmetric pentamode units with directional refraction and acoustic isolation. The numerical shows that the acoustic insulation and vibration attenuation can be obtained from 7.0 kHz to 8.4 kHz, while efficient directional transmission can be achieved between 2.0 kHz and 4.0 kHz. This study may provide a pathway for acoustic metasurface to control the acoustic propagation in diodes, insulators and cloaks. |
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ISSN: | 0947-8396 1432-0630 |
DOI: | 10.1007/s00339-024-07690-6 |