Abstract

Giant unilamellar vesicles (GUVs) suffer variations in shape when exposed to changes in osmotic stress. These shape variations should alter their drag properties when moving close to a surface by inducing a change in the lubrication drag between the surface and the vesicle due to an excess surface area. Using POPC vesicles labeled with NBD-PE we study the influence that osmotic pressure and sedimentation conditions produce on the dynamics of vesicles moving under the influence of a lateral electric field.

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