Finite-size effects in biomimetic smectic films

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Journal titlePhysical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Article number062902
Pages062902-1062902-4; # of pages: 4
SubjectBiomimetic Materials; Computer Simulation; Dimyristoylphosphatidylcholine; Lipid Bilayers; Macromolecular Substances; Membrane Fluidity; Membranes, Artificial; Models, Chemical; Molecular Conformation; Neutron Diffraction; Phase Transition; Surface Properties; Temperature
AbstractThin stacks of lipid multibilayers supported on rigid silicon and mica substrates are found to exhibit finite-size effects. Using neutron diffraction we find that the repeat spacing (d) of stacks containing up to a few tens of bilayers depends on their thickness (D), with d increasing with decreasing D. Differences in d are larger in the low-temperature Lbeta' phase consisting of rigid bilayers than in the high-temperature Lalpha phase where the bilayers are more flexible. Various scenarios that may be responsible for this counterintuitive observation are discussed.
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AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12337915
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Record identifierc9677f9d-8ebf-4cfa-a524-335b40d43ad6
Record created2009-09-10
Record modified2016-05-09
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