title: Thermal excitations of a bilipid membrane.
abstract: Propagating modes of vibration of a bilipid membrane have been detected with light beating spectroscopy. The dependence of omega on q is consistent with a model of a fluid film of surface tension sigma = 2.5 +/- 0.5 dyn cm-1 surrounded by a medium with rho = 1 g cm-3 and eta = 1.01 X 10(-2) P.
mesh_terms: D002784:Cholesterol; D004548:Elasticity; D007834:Lasers; D008055:Lipids; D008567:Membranes, Artificial; D012542:Scattering, Radiation; D013057:Spectrum Analysis / Q000379:methods; D013500:Surface Tension; D013696:Temperature; D014732:Vibration; D014783:Viscosity
chemical_list: D008055:Lipids; D008567:Membranes, Artificial; D002784:Cholesterol