Abstract
The lateral domain structure of lipid membranes is mainly controlled by the thermodynamic characteristics, i.e. composition, temperature and tension. In this study we show experimentally by the combination of fluorescence microscopy and micropipette aspiration techniques and theoretically by phenomenological modeling that the lateral tension of the membrane provides a potent control parameter of the lateral phase behavior and domain structures in lipid membranes. The lateral tension can lead to significant distortions of the phase diagrams and modification of critical behavior, and hence enhancement or suppression of lateral domains.
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