Asymmetric acoustic transmission in multiple frequency bands
Asymmetric acoustic transmission in multiple frequency bands
复制标题
多频段的非对称声学传输
DOI:
10.1063/1.4936609
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发表时间:
2015-11
影响因子:
4
通讯作者:
Zhang Shu-yi
中科院分区:
文献类型:
--
作者:
Sun Hong-xiang;Yuan Shou-qi;Zhang Shu-yi
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.
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