Brillouin light scattering measurement of the elastic properties of aligned multilamella lipid samples

J. P. Lepesant; L. Powers; P. S. Pershan

doi:10.1073/pnas.75.4.1792

Brillouin light scattering measurement of the elastic properties of aligned multilamella lipid samples

J. P. Lepesant, L. Powers, P. S. Pershan

Electrical and Computer Engineering

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28 Scopus citations

Abstract

Brillouin measurements of the elastic properties are presented for aligned multilamella samples of both pure dipalmitoyl phosphatidylcholine at various temperatures and water concentrations and for the same compound containing 33 mol % cholesterol at various temperatures and two water concentrations. For pure dipalmitoyl phosphatidylcholine the elastic moduli change significantly at the gel transition and the modulus for area compression of individual bilayers is inferred to be an order of magnitude larger below the gel transformation than above. The presence of cholesterol is shown to influence the elastic behavior of dipalmitoyl phosphatidylcholine.

Original language	English (US)
Pages (from-to)	1792-1795
Number of pages	4
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	75
Issue number	4
DOIs	https://doi.org/10.1073/pnas.75.4.1792
State	Published - 1978

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abstract = "Brillouin measurements of the elastic properties are presented for aligned multilamella samples of both pure dipalmitoyl phosphatidylcholine at various temperatures and water concentrations and for the same compound containing 33 mol % cholesterol at various temperatures and two water concentrations. For pure dipalmitoyl phosphatidylcholine the elastic moduli change significantly at the gel transition and the modulus for area compression of individual bilayers is inferred to be an order of magnitude larger below the gel transformation than above. The presence of cholesterol is shown to influence the elastic behavior of dipalmitoyl phosphatidylcholine.",

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AU - Lepesant, J. P.

AU - Powers, L.

AU - Pershan, P. S.

PY - 1978

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N2 - Brillouin measurements of the elastic properties are presented for aligned multilamella samples of both pure dipalmitoyl phosphatidylcholine at various temperatures and water concentrations and for the same compound containing 33 mol % cholesterol at various temperatures and two water concentrations. For pure dipalmitoyl phosphatidylcholine the elastic moduli change significantly at the gel transition and the modulus for area compression of individual bilayers is inferred to be an order of magnitude larger below the gel transformation than above. The presence of cholesterol is shown to influence the elastic behavior of dipalmitoyl phosphatidylcholine.

AB - Brillouin measurements of the elastic properties are presented for aligned multilamella samples of both pure dipalmitoyl phosphatidylcholine at various temperatures and water concentrations and for the same compound containing 33 mol % cholesterol at various temperatures and two water concentrations. For pure dipalmitoyl phosphatidylcholine the elastic moduli change significantly at the gel transition and the modulus for area compression of individual bilayers is inferred to be an order of magnitude larger below the gel transformation than above. The presence of cholesterol is shown to influence the elastic behavior of dipalmitoyl phosphatidylcholine.

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Brillouin light scattering measurement of the elastic properties of aligned multilamella lipid samples

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