Electro-osmosis at the surface of phospholipid bilayer membranes.
The electro-osmotic velocity is the velocity of a fluid near an interface produced by an electric field parallel to a surface. The velocity adjacent to fixed phospholipid bilayer membranes was measured by observing the velocity of small vesicles suspended in the fluid. The charge densities of the bilayers ranged from 0 to 1 electronic charge per lipid and experiments were performed at temperatures above and below the transition temperature of the phospholipid bilayer in 1, 10 and 100 mM NaCl solutions. The Helmholtz-Smoluchowski equation correctly predicted the electro-osmotic velocity from the known value of zeta potential of the phospholipid bilayer.
D004134:Dimyristoylphosphatidylcholine; D008051:Lipid Bilayers; D008560:Membrane Fluidity; D008954:Models, Biological; D010713:Phosphatidylcholines; D010715:Phosphatidylglycerols; D013329:Structure-Activity Relationship
D008051:Lipid Bilayers; D010713:Phosphatidylcholines; D010715:Phosphatidylglycerols; C002773:dimyristoylphosphatidylglycerol; D004134:Dimyristoylphosphatidylcholine