Competing interactions and domain-shape instabilities in a monomolecular film at an air-water interface
- 16 April 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (16) , 1903-1906
- https://doi.org/10.1103/physrevlett.64.1903
Abstract
Domain-shape instabilities are investigated in a two-dimensional binary mixture of near-critical composition, a monomolecular film confined to an air-water interface and composed of a phospholipid and cholesterol. We apply the methodology of spectral analysis to the quantitative description of domain-wall configurations. This permits us to identify an elliptic instability and a branching instability leading into a ‘‘melted’’ stripe phase in the vicinity of the consolute point. In between, a regime exists in which domain-wall fluctuations exhibit a capillary-wave spectrum.Keywords
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