| Brownian motor in a granular medium. | |
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MedLine Citation:
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PMID: 21517497 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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In this work we experimentally study the behavior of a freely rotating asymmetric probe immersed in a vibrated granular medium. For a wide variety of vibration conditions the probe exhibits a steady rotation whose direction is constant with respect to the asymmetry. By changing the vibration amplitude and by filtering the noise in different frequency bands we show that the velocity of rotation depends not only on the RMS acceleration Γ, but also on the amount of energy provided to two separate frequency bands, which are revealed to be important for the dynamics of the granular medium: The first band governs the transfer of energy from the grains to the probe, and the second affects the dynamics by altering the viscosity of the vibro-fluidized material. |
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Authors:
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R Balzan; F Dalton; V Loreto; A Petri; G Pontuale |
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Publication Detail:
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Type: Journal Article Date: 2011-03-30 |
Journal Detail:
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Title: Physical review. E, Statistical, nonlinear, and soft matter physics Volume: 83 ISSN: 1550-2376 ISO Abbreviation: Phys Rev E Stat Nonlin Soft Matter Phys Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-04-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101136452 Medline TA: Phys Rev E Stat Nonlin Soft Matter Phys Country: United States |
Other Details:
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Languages: eng Pagination: 031310 Citation Subset: IM |
Affiliation:
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Dipartimento di Fisica, Sapienza Università di Roma, Piazzale A. Moro 2, I-00185 Roma, Italy and Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, sede di Tor Vergata, Via del Fosso del Cavaliere 100, I-00133 Roma, Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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