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Title: Modification of lipid membrane compressibility induced by an electric field
Author: Prathyusha, K. R.
Pagonabarraga Mora, Ignacio
Sunil Kumar, P. B.
Keywords: Membranes lipídiques
Camps elèctrics
Lipid membranes
Electric fields
Issue Date: 10-Dec-2020
Publisher: American Physical Society
Abstract: Changes in membrane deformation and compressibility, induced by an external electric field, are investigated using coarse-grained martini force field simulations in a salt-free environment. We observe changes in the area of the membrane above a critical electric field. Below this value, the membrane compressibility modulus is found to decrease monotonically. For higher electric fields, the membrane projected area remains constant while the net interfacial area increases, with the corresponding compressibility moduli, show the opposite behavior. We find that the mechanical parameters, surface tension and bending modulus, of a freely floating membrane in the absence of explicit ions, are unaffected by the presence of the electric field. We believe these results have a bearing on our understanding of the electroformation of uncharged lipids in a salt-free environment.
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It is part of: Physical Review E, 2020, vol. 102, p. 062413
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ISSN: 1539-3755
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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