Phase diagram of a lipid monolayer on the surface of water

B. Lin*, M. C. Shih, T. M. Bohanon, G. E. Ice, P. Dutta

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

165 Scopus citations


The monolayer isotherms of heneicosanoic acid show a variety of features in the range 1e"8°C; such features are often assumed to be solid-fluid or fluid-fluid transitions. Using x-ray diffraction (and searching for in-plane and off-plane peaks) we find (a) two distinct distorted-hexagonal (DH) solids at high pressures, both with essentially vertical chains; (b) two distinct tilted-DH solids at intermediate pressures; and (c) an expanded solid at the lowest pressures. All eeplateausee in these isotherms are in-plane structural transitions; all eekinksee are solid-solid tilting transitions.

Original languageEnglish (US)
Pages (from-to)191-194
Number of pages4
JournalPhysical review letters
Issue number2
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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