Refraction-type sonic crystal junction diode
Refraction-type sonic crystal junction diode
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DOI：
10.1063/1.3694020
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发表时间：
2012-03-12
影响因子：
4
通讯作者：
Ulug, Bulent
中科院分区：
文献类型：
--
作者：
Cicek, Ahmet;Kaya, Olgun Adem;Ulug, Bulent
数值研究了具有不同取向和晶格常数的两个正方形声晶体的单向声传播。通过分别穿过空气-第一声波晶体界面和结的折射来重新定标和旋转波矢量，有助于耦合到第二晶体的空间模式。通过有限元模拟，实现了10.4 kHz到12.8 kHz的单向传输。在11.0 kHz和12.4 kHz之间，向右和向左的透射值分别大于60%和小于1.0%，导致对比度大于0.9。(C)2012年美国物理研究所。[http://dx.doi.org/10.1063/1.3694020]
Unidirectional sound transmission across a junction of two square sonic crystals with different orientations and lattice constants is numerically investigated. Re-scaling and rotating the wave vectors through refractions across the air-first sonic crystal interface and the junction, respectively, facilitate coupling into the spatial modes of the second crystal. Unidirectional transmission, demonstrated through finite element method simulations, is accomplished between 10.4 kHz and 12.8 kHz. Transmission values to the right and left are greater than 60% and less than 1.0%, respectively, between 11.0 kHz and 12.4 kHz, resulting in a contrast ratio greater than 0.9. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3694020]