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Article Dans Une Revue Physical Review Letters Année : 2002

Undulation instability of lipid membranes under an electric field

Pierre Sens

Résumé

The influence of an electric field on a poorly conductive membrane such as a lipid bilayer is studied theoretically. The unbalanced electric stress created by an ionic current across a non-perfectly flat membrane gives rise to a destabilizing surface energy enhancing undulations. The deformation of a membrane attached to a frame and the subsequent force on the frame are derived and the electrohydrodynamic instability of a free floating membrane is also studied. We find a most unstable mode of undulation, of wavelength in the $\mu m$ range, connected to the crossover between membrane and solvent dominated dissipations.

Dates et versions

hal-00117534 , version 1 (02-12-2006)

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Pierre Sens, Hervé Isambert. Undulation instability of lipid membranes under an electric field. Physical Review Letters, 2002, 88, pp.128102. ⟨hal-00117534⟩
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