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Proceedings Paper

Phase transitions in a lipid monolayer observed with vibrational sum-frequency generation
Author(s): Michiel Muller; Juleon M. Schins; Sylvie Roke; Mischa Bonn
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Paper Abstract

Using both vibrational sum-frequency generation and fluorescence microscopy, the phase behavior of a DPPC lipid monolayer on water is investigated as a function of surface pressure. The vibrational specificity of the sum-frequency generation techniques permits determining the order of the alkyl chains, as well as the average orientation of the terminal methyl group. A novel -- and extremely sharp -- phase transition is observed at low compression, which is attributed to a curling of the alkyl chains due to increased exposure of the (hydrophobic) alkyl chains to the water surface.

Paper Details

Date Published: 9 July 2003
PDF: 8 pages
Proc. SPIE 4964, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing X, (9 July 2003); doi: 10.1117/12.499817
Show Author Affiliations
Michiel Muller, Univ. of Amsterdam (Netherlands)
Juleon M. Schins, Univ. of Amsterdam (Netherlands)
Sylvie Roke, Leiden Institute of Chemistry (Netherlands)
Mischa Bonn, Leiden Institute of Chemistry (Netherlands)


Published in SPIE Proceedings Vol. 4964:
Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing X
Jose-Angel Conchello; Carol J. Cogswell; Tony Wilson, Editor(s)

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