Thermophoretic depletion follows boltzmann distribution

  • Duhr S
  • Braun D
  • 177


    Mendeley users who have this article in their library.
  • 144


    Citations of this article.


Thermophoresis, also termed thermal diffusion or the Soret effect, moves particles along temperature gradients. For particles in liquids, the effect lacks a theoretical explanation. We present experimental results at moderate thermal gradients: (i) Thermophoretic depletion of 200 nm polystyrene spheres in water follows an exponential distribution over 2 orders of magnitude in concentration; (ii) Soret coefficients scale linearly with the sphere’s surface area. Based on the experiments, it is argued that local thermodynamic equilibrium is a good starting point to describe thermophoresis.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Stefan Duhr

  • Dieter Braun

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free