Anomalous thermomechanical properties of a self-propelled colloidal fluid.

We use numerical simulations to compute the equation of state of a suspension of spherical self-propelled nanoparticles in two and three dimensions. We study in detail the effect of excluded volume interactions and confinement as a function of the system's temperature, concentration, and strength of the propulsion. We find a striking nonmonotonic dependence of the pressure on the temperature and provide simple scaling arguments to predict and explain the occurrence of such anomalous behavior. We explicitly show how our results have important implications for the effective forces on passive components suspended in a bath of active particles.

• Publication year

  2013

• Venue

  Physical review. E, Statistical, nonlinear, and soft matter physics

• Publication date

  2013-10-02

• Fields of study

  Materials Science, Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevE.89.052303arXiv 1310.0826PMID 25353796
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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