Dynamic surface tension of complex fluid-fluid interfaces: A useful concept, or not?

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)

Abstract

Dilatational moduli are typically determined by subjecting interfaces to oscillatory area deformations, and are often defined in terms of the difference between the dynamic or transient surface tension of the interface (the surface tension in its deformed state), and the surface tension of the interface in its non-deformed state. Here we will discuss the usefulness of the dynamic surface tension concept in the characterization of dilatational properties of complex fluid-fluid interfaces. Complex fluid-fluid interfaces are interfaces stabilized by components which form mesophases (two-dimensionional gels, glasses, or (liquid) crystalline phases), as a result of in-plane interactions between the components. We will show that for such interfaces dilatational properties are not exclusively determined by the exchange of surface active components between interface and adjoining bulk phases, but also by in-plane viscoelastic stresses. The separation of these contributions remains a challenging problem which remains to be solved.
Original languageEnglish
Pages (from-to)39-46
JournalThe European Physical Journal. Special Topics
Volume222
Issue number1
DOIs
Publication statusPublished - 2013

Keywords

  • scanning angle reflectometry
  • air-water-interface
  • neutron reflectivity
  • 2-dimensional suspensions
  • air/water interface
  • bending rigidity
  • latex-particles
  • beta-casein
  • systems
  • equilibrium

Fingerprint Dive into the research topics of 'Dynamic surface tension of complex fluid-fluid interfaces: A useful concept, or not?'. Together they form a unique fingerprint.

Cite this