Parallel stability analysis of membrane lamellar structures and foam films

TL;DR

This paper analyzes the stability of membrane lamellar structures and foam films by calculating capillary wave amplitudes within the DLVO theory, revealing differences due to elastic properties and identifying conditions for prolonged film lifetime.

Contribution

It introduces a comparative analysis of classical and lipid bilayer films' stability based on capillary wave behavior and elastic properties, highlighting conditions for extended film stability.

Findings

Significant differences in capillary wave behavior between classical and lipid bilayer films.

Identification of specific film radii where film lifetime is notably extended.

Elastic properties critically influence film stability and dynamics.

Abstract

In the frames of the DLVO theory the root mean square amplitude of capillary waves in a thin liquid film is calculated and its dependence on some important physical parameters is unveiled. Two important models are considered: films with classical interfaces and films between lipid bilayers. The performed numerical analysis demonstrates essential difference in their behavior due to the different elastic properties of the film surfaces. It is shown that the film lifetime is significantly long at some magic film radii.