Hot brownian motion.
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.
Rings
Daniel
D
Institut für Theoretische Physik, Universität Leipzig, Postfach 100920, 04009 Leipzig, Germany.
Schachoff
Romy
R
Selmke
Markus
M
Cichos
Frank
F
Kroy
Klaus
K