Dominant diffusing mode in the self-similar phase separation of a magnetic suspension in a magnetic field

Adriana S. Silva, Denis Wirtz

Research output: Contribution to journalArticle

Abstract

We report time-resolved light-scattering measurements showing that a magnetic suspension quenched in a strong magnetic field undergoes a dynamic instability with a selected wave vector. In the plane normal to the field, the suspension phase-separates self-similarly into columns of circular cross-section and is described by an extremely small dynamic exponent. This phase separation is shown to be dominated by a single diffusing mode, with a wave vector that corresponds to the peak of the final steady-state structure factor. This finding is explained with a mean-field model of phase separation.

Original languageEnglish (US)
Pages (from-to)578-581
Number of pages4
JournalLangmuir
Volume14
Issue number3
StatePublished - Feb 3 1998

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magnetic suspension
Phase separation
Suspensions
Magnetic fields
magnetic fields
Light scattering
light scattering
exponents
cross sections

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Dominant diffusing mode in the self-similar phase separation of a magnetic suspension in a magnetic field. / Silva, Adriana S.; Wirtz, Denis.

In: Langmuir, Vol. 14, No. 3, 03.02.1998, p. 578-581.

Research output: Contribution to journalArticle

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