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Author Sengupta, Kheya ♦ Raghunathan, V. A. ♦ Hatwalne, Yashodhan
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ASYMMETRY ♦ ELASTICITY ♦ ELECTRON DENSITY ♦ HYDROCARBONS ♦ LIPIDS ♦ PHOSPHOLIPIDS ♦ THICKNESS
Abstract We present the electron density map of the asymmetric ripple phase of dilauroylphosphatidylcholine. We find that the primary feature characterizing the ''asymmetry'' of the rippled bilayers is the difference in the bilayer thickness in the two arms, and not the asymmetry of the bilayer height profile as is generally assumed. This difference in the bilayer thickness can be attributed to a mean tilt of the hydrocarbon chains of the lipid molecules along the direction of the ripple wave vector. We propose a Landau theory for this phase which takes into account the anisotropic elastic properties of a bilayer with tilt order.
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-07-30
Publisher Place United States
Journal Physical Review Letters
Volume Number 87
Issue Number 5


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