Electrical conductivity of quasi-two-dimensional foams

Abstract

Quasi-two-dimensional (quasi-2D) foams consist of monolayers of bubbles squeezed between two narrowly spaced plates. These simplified foams have served successfully in the past to shed light on numerous issues in foam physics. Here we consider the electrical conductivity of such model foams. We compare experiments to a model which we propose, and which successfully relates the structural and the conductive properties of the foam over the full range of the investigated liquid content. We show in particular that in the case of quasi-2D foams the liquid in the nodes needs to be taken into account even at low liquid content. We think that these results may provide different approaches for the characterization of foam properties and for the in situ characterization of the liquid content of foams in confining geometries, such as microfluidics

References in corpus (4)

• Electrical conductivity of dispersions: from dry foams to dilute suspensions
• Rate Dependence and Role of Disorder in Linearly Sheared Two-Dimensional Foams
• Yield drag in a two-dimensional foam flow around a circular obstacle: Effect of liquid fraction
• Bubble statistics and coarsening dynamics for quasi-two dimensional foams with increasing liquid content