Asymmetric acoustic transmission in multiple frequency bands

Journal Article · Mon Nov 23 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4936609· OSTI ID:22486138

Sun, Hong-xiang ^[1]; Yuan, Shou-qi ^[1]; Zhang, Shu-yi ^[2]

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1. Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013 (China)
2. Laboratory of Modern Acoustics, Institute of Acoustics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093 (China)

We report both experimentally and numerically that the multi-band device of the asymmetric acoustic transmission is realized by placing two periodic gratings with different periods on both sides of two brass plates immersed in water. The asymmetric acoustic transmission can exist in four frequency bands below 1500 kHz, which arises from the interaction between various diffractions from the two gratings and Lamb modes in the brass plates immersed in water. The results indicate that the device has the advantages of multiple band, broader bandwidth, and simpler structure. Our finding should have great potential applications in ultrasonic devices.

• OSTI ID: 22486138
• Journal Information: Applied Physics Letters, Vol. 107, Issue 21; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASYMMETRY
BRASS
DIFFRACTION
GRATINGS
INTERACTIONS
KHZ RANGE
PERIODICITY
PLATES
TRANSMISSION