Pseudocritical Behavior and Unbinding of Phospholipid Bilayers

Jesper Lemmich, Kell Mortensen, John Hjorth Ipsen, Thomas Hønger Callisen, Rogert Bauer, Ole G. Mouritsen

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The temperature dependence of the small-angle neutron scattering from fully hydrated multilamellar phospholipid bilayers near the main phase transition is analyzed by means of a simple geometric model which yields both the lamellar repeat distance as well as the hydrophobic thickness of the bilayer and the interlamellar aqueous spacing. The results for two different lipids show that the lamellar repeat distance displays pseudocritical behavior with a value of the exponent that is in accordance with the theory for critical unbinding transitions of interacting membranes.
Original languageEnglish
JournalPhysical Review Letters
Issue number21
Pages (from-to)3958-3961
Publication statusPublished - 1995

Bibliographical note

Copyright (1995) American Physical Society.


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