Distinguishing advective and powered motion in self-propelled colloids

Young Moo Byun, Paul E. Lammert, Yiying Hong, Ayusman Sen, Vincent H. Crespi

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Self-powered motion in catalytic colloidal particles provides a compelling example of active matter, i.e. systems that engage in single-particle and collective behavior far from equilibrium. The long-time, long-distance behavior of such systems is of particular interest, since it connects their individual micro-scale behavior to macro-scale phenomena. In such analyses, it is important to distinguish motion due to subtle advective effects - which also has long time scales and length scales - from long-timescale phenomena that derive from intrinsically powered motion. Here, we develop a methodology to analyze the statistical properties of the translational and rotational motions of powered colloids to distinguish, for example, active chemotaxis from passive advection by bulk flow.

Original languageEnglish (US)
Article number445101
JournalJournal of Physics Condensed Matter
Volume29
Issue number44
DOIs
StatePublished - Oct 12 2017

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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