Abstract
The Brownian motion of a hot nanoparticle is described by an effective Markov theory based on fluctuating hydrodynamics. Its predictions are scrutinized over a wide temperature range using large-scale molecular dynamics simulations of a hot nanoparticle in a Lennard-Jones fluid. The particle positions and momenta are found to be Boltzmann distributed according to distinct effective temperatures THBM and Tk. For T HBM we derive a formally exact theoretical prediction and establish a generalised Einstein relation that links it to directly measurable quantities.
Original language | English |
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Article number | 60009 |
Journal | EPL |
Volume | 96 |
Issue number | 6 |
DOIs | |
State | Published - Dec 2011 |
Externally published | Yes |