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Forces Induced by Non-Equilibrium Fluctuations: The Soret-Casimir Effect

Abstract:

The notion of fluctuation-induced forces is generalized to the cases where the fluctuations have nonequilibrium origin. It is shown that a net force is exerted on a single flat plate that restricts scale-free fluctuations of a scalar field in a temperature gradient. This force tends to push the object to the colder regions, which is a manifestation of thermophoresis or the Soret effect. In the classic two-plate geometry, it is shown that the Casimir forces exerted on the two plates differ fro...

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Publication status:
Published

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Publisher copy:
10.1209/epl/i2004-10275-5

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
Journal:
EUROPHYSICS LETTERS
Volume:
68
Issue:
6
Pages:
776-782
Publication date:
2003-08-19
DOI:
EISSN:
1286-4854
ISSN:
0295-5075
URN:
uuid:b276e8f9-8fa8-44e3-8518-c4df18cfa1af
Source identifiers:
157217
Local pid:
pubs:157217
Language:
English
Keywords:

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