Anomalous wave reflection at the interface of two strongly nonlinear granular media

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 soli...

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Bibliographic Details
Published in:Physical review letters 2005-10, Vol.95 (15), p.158702.1-158702.4, Article 158702
Main Authors: NESTERENKO, V. F, DARAIO, C, HERBOLD, E. B, JIN, S
Format: Article
Language:English
Subjects:
Colloids - analysis
Colloids - chemistry
Computer Simulation
Electromagnetic Fields
Exact sciences and technology
Models, Chemical
Motion
Nonlinear Dynamics
Physics
Powders - analysis
Powders - chemistry
Self-organized systems
Statistical physics, thermodynamics, and nonlinear dynamical systems
Surface Properties
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.95.158702