Nesterenko, V. F. and Daraio, C. and Herbold, E. B. and Jin, S. (2005) Anomalous Wave Reflection at the Interface of Two Strongly Nonlinear Granular Media. Physical Review Letters, 95 (15). Art. No. 158702. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:NESprl05
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Granular materials exhibit a strongly nonlinear behavior affecting the propagation of energy and information. Dynamically self-organized strongly nonlinear solitary waves are the main information carriers in granular chains. We report the first experimental observation of the dramatic change of solitary wave reflectivity from the interface of two granular media triggered by a magnetically induced precompression. It may be appropriate to name this phenomenon the "acoustic diode" effect. We explain this effect by the high gradient of particle velocity near the interface.
|Additional Information:||©2005 The American Physical Society (Received 15 June 2005; published 6 October 2005) The authors wish to acknowledge the support of this work by the U.S. NSF (Grant No. DCMS03013220).|
|Subject Keywords:||granular structure; granular materials; interface phenomena; solitons; reflectivity; nonlinear acoustics; nonlinear systems|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||28 Sep 2006|
|Last Modified:||26 Dec 2012 09:03|
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