Tunable Unidirectional Sound Propagation through a Sonic-Crystal-Based Acoustic Diode
Abstract
Nonreciprocal wave propagation typically requires strong nonlinear materials to break time reversal symmetry. Here, we utilized a sonic-crystal-based acoustic diode that had broken spatial inversion symmetry and experimentally realized sound unidirectional transmission in this acoustic diode. These novel phenomena are attributed to different mode transitions as well as their associated different energy conversion efficiencies among different diffraction orders at two sides of the diode. This nonreciprocal sound transmission could be systematically controlled by simply mechanically rotating the square rods of the sonic crystal. Different from nonreciprocity due to the nonlinear acoustic effect and broken time reversal symmetry, this new model leads to a one-way effect with higher efficiency, broader bandwidth, and much less power consumption, showing promising applications in various sound devices.
Additional Information
© 2011 American Physical Society. Received 25 October 2010; revised manuscript received 3 January 2011; published 23 February 2011. The work was jointly supported by the National Basic Research Program of China (Grant No. 2007CB613202). We also acknowledge the support from the Nature Science Foundation of China (Grant No. 10874080) and the Nature Science Foundation of Jiangsu Province (Grant No. BK2007712).Attached Files
Published - Li2011p12929Phys_Rev_Lett.pdf
Supplemental Material - README.TXT
Supplemental Material - Revised_Supplementary.doc
Supplemental Material - Revised_Supplementary.pdf
Files
Additional details
- Eprint ID
- 22944
- Resolver ID
- CaltechAUTHORS:20110316-154401226
- 2007CB613202
- National Basic Research Program of China
- 10874080
- Nature Science Foundation of China
- BK2007712
- Nature Science Foundation of Jiangsu Province
- Created
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2011-03-16Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field