A chiral granular gas

Inspired by rattleback toys, we created small chiral wires that rotate in a preferred direction on a vertically oscillating platform and quantified their motion with experiment and simulation. We demonstrate experimentally that angular momentum of rotation about particle centers of mass is converted...

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Bibliographic Details
Published in:Physical review letters 2005-06, Vol.94 (21), p.214301.1-214301.4, Article 214301
Main Authors: TSAI, J.-C, FANGFU YE, RODRIGUEZ, Juan, GOLLUB, J. P, LUBENSKY, T. C
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Granular solids
Material form
Physics
Rheology
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Summary:Inspired by rattleback toys, we created small chiral wires that rotate in a preferred direction on a vertically oscillating platform and quantified their motion with experiment and simulation. We demonstrate experimentally that angular momentum of rotation about particle centers of mass is converted to collective angular momentum of center-of-mass motion in a granular gas of these wires, and we introduce a continuum model that explains our observations.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.94.214301