Tunable Acoustic Metasurface with High-Q Spectrum Splitting
AbstractWe propose a tunable acoustic metasurface using a nested structure as the microunit, which is constituted by two distinct resonators. Thanks to the coupling resonance for the microunit and by simply adjusting the rotation angle of the inner split cavity, this nested structure provides nearly 2π phase shift. The full-wave simulations demonstrate that the constructed metasurface can be tuned to reflect incident sound waves to different directions in the operation frequency region with a very narrow bandwidth, which is a key functionality for many applications such as filtering and imaging. Meanwhile, the reflected sound waves out of the operation frequency region always remain unchanged. As a result, a high Q-factor spectrum splitting can be realised. The presented metasurface is of importance to develop many metamaterial-based devices, such as tunable acoustic cloaks and acoustic switching devices. View Full-Text
Share & Cite This Article
Zhai, S.; Song, K.; Ding, C.; Wang, Y.; Dong, Y.; Zhao, X. Tunable Acoustic Metasurface with High-Q Spectrum Splitting. Materials 2018, 11, 1976.
Zhai S, Song K, Ding C, Wang Y, Dong Y, Zhao X. Tunable Acoustic Metasurface with High-Q Spectrum Splitting. Materials. 2018; 11(10):1976.Chicago/Turabian Style
Zhai, Shilong; Song, Kun; Ding, Changlin; Wang, Yuanbo; Dong, Yibao; Zhao, Xiaopeng. 2018. "Tunable Acoustic Metasurface with High-Q Spectrum Splitting." Materials 11, no. 10: 1976.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.