The European Physical Journal E

, 30:333

Criticality in a non-equilibrium, driven system: Charged colloidal rods (fd-viruses) in electric fields

Authors

    • Forschungszentrum JülichInstitute für Festkörper Forschung (IFF), Weiche Materie
  • J. K. G. Dhont
    • Forschungszentrum JülichInstitute für Festkörper Forschung (IFF), Weiche Materie
Regular Article

DOI: 10.1140/epje/i2009-10525-4

Cite this article as:
Kang, K. & Dhont, J.K.G. Eur. Phys. J. E (2009) 30: 333. doi:10.1140/epje/i2009-10525-4

Abstract

Experiments on suspensions of charged colloidal rods (fd-virus particles) in external electric fields are performed, which show that a non-equilibrium critical point can be identified. Several transition lines of field-induced phases and states meet at this point and it is shown that there is a length- and time-scale which diverge at the non-equilibrium critical point. The off-critical and critical behavior is characterized, with both power law and logarithmic divergencies. These experiments show that analogous features of the classical, critical divergence of correlation lengths and relaxation times in equilibrium systems are also exhibited by driven systems that are far out of equilibrium, related to phases/states that do not exist in the absence of the external field.

PACS

64.60.-i General studies of phase transitions82.70.Dd Colloids87.50.-a Effects of electromagnetic and acoustic fields on biological systems

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009