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APS » Journals » Phys. Rev. Lett. » Volume 105 » Issue 9
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Phys. Rev. Lett. 105, 090604 (2010) [4 pages]

Hot Brownian Motion

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Daniel Rings, Romy Schachoff, Markus Selmke, Frank Cichos, and Klaus Kroy*
Institut für Theoretische Physik, Universität Leipzig, Postfach 100920, 04009 Leipzig, Germany and Institut für Experimentelle Physik I, Universität Leipzig, Linnéstraße 5, 04103 Leipzig, Germany

Received 23 March 2010; revised 8 July 2010; published 26 August 2010

We derive the Markovian description for the nonequilibrium Brownian motion of a heated nanoparticle in a simple solvent with a temperature-dependent viscosity. Our analytical results for the generalized fluctuation-dissipation and Stokes-Einstein relations compare favorably with measurements of laser-heated gold nanoparticles and provide a practical rational basis for emerging photothermal tracer and nanoparticle trapping and tracking techniques.

© 2010 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.105.090604
DOI:
10.1103/PhysRevLett.105.090604
PACS:
05.40.Jc, 05.70.Ln, 47.15.G-

*kroy@itp.uni-leipzig.de

 
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