Diffusion of a Brownian ellipsoid in a force field

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Erik Aurell

  • Stefano Bo
  • Marcelo Dias
  • Ralf Eichhorn
  • Raffaele Marino

Research units

  • Royal Institute of Technology
  • Stockholm University

Abstract

We calculate the effective long-term convective velocity and dispersive motion of an ellipsoidal Brownian particle in three dimensions when it is subjected to a constant external force. This long-term motion results as a "net" average behavior from the particle rotation and translation on short time scales. Accordingly, we apply a systematic multi-scale technique to derive the effective equations of motion valid on long times. We verify our theoretical results by comparing them to numerical simulations.

Details

Original languageEnglish
Article number30005
JournalEPL
Volume114
Issue number3
Publication statusPublished - 1 May 2016
MoE publication typeA1 Journal article-refereed

ID: 6488057