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Statistical mechanics of the ripple phase in lipid bilayers

The Journal of Chemical Physics, ISSN: 0021-9606, Vol: 77, Issue: 2, Page: 951-958
1982
  • 38
    Citations
  • 0
    Usage
  • 5
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    38
    • Citation Indexes
      38
  • Captures
    5

Article Description

The essential features of lipid molecule interactions responsible for the ripple phase in lecithin bilayers are identified and incorporated into a general statistical mechanical model. As a first approximation, the model is reduced to the axial next-nearest neighbor Ising (ANNNI) model. This model exhibits an intermediate ripple phase, over a narrow temperature range, between a high-temperature (chain melted) disordered phase and a low-temperature (chain tilted) ordered phase. In this way the ripples are found to arise from an interplay between the attractive van der Waals forces and the action of the headgroup to hinder level packing of the lipid molecules. © 1982 American Institute of Physics.

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