期刊
APPLIED PHYSICS LETTERS
卷 109, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4955268
关键词
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资金
- National Natural Science Foundation of China [51239005, 11404147]
- Natural Science Foundation of Jiangsu Province of China [BK20140519]
- China Postdoctoral Science Foundation [2015M571672]
- Training Project of Young Backbone Teachers of Jiangsu University
We report the realization of a multi-band device of the asymmetric acoustic transmission by placing a phononic crystal inside a bended waveguide immersed in water, as determined both experimentally and numerically. The asymmetric acoustic transmission exists in three frequency bands below 500 kHz induced by multiple mechanisms. Besides the band gap of the phononic crystal, we also introduce the deaf mode and interaction between the phononic crystal and waveguide. More importantly, this asymmetric transmission can be systematically controlled by mechanically rotating the square rods of the phononic crystal. The device has the advantages of multiple band, broader bandwidth, and adjustable property, showing promising applications in ultrasonic devices. Published by AIP Publishing.
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