Domain wall fluctuations and instabilities in monomolecular films

M. Seul

Physica A: Statistical Mechanics and its Applications, 1990, vol. 168, issue 1, 198-209

Abstract: Static and dynamic aspects of domain wall fluctuations and instabilities are investigated in a monomolecular film confined to an air-water interface and composed of a phospholipid and cholesterol. Spectral analysis, based on techniques of digital image processing and optical character recognition, provides a quantitative description of domain shapes and their excitations. This methodology has permitted us to identify an elliptic instability, followed by a branching instability in the course of isothermal film compression. The latter event signals the emergence of a “melted” stripe phase in the vicinity of the consolute point. An intermediate regime is characterized by equipartition between serveral active, quasi-capillary domain wall excitations and by diffusive fluctuation dynamics.

Date: 1990
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:168:y:1990:i:1:p:198-209

DOI: 10.1016/0378-4371(90)90370-8

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