Refraction-type sonic crystal junction diode
- 12 March 2012
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 100 (11), 111905
- https://doi.org/10.1063/1.3694020
Abstract
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.This publication has 28 references indexed in Scilit:
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