Stability of biomimetic membranes in DC electric fields

Stability of biomimetic membranes in DC electric fields
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仿生膜在直流电场中的稳定性

DOI:
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发表时间:
2012
影响因子:
3.7
通讯作者:
Petia M. Vlahovska
Petia M. Vlahovska
中科院分区:
工程技术2区
文献类型:
--
作者:
J. Seiwert;M. Miksis;Petia M. Vlahovska

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定义生物细胞的界面是一层薄膜,它起着漏电容的作用。我们研究了电容和电导率对平面薄膜在直流电场作用下稳定性的影响。我们开发了薄膜的零厚度模型,其中双层有限厚度有效地由薄膜的机电性能(如弯曲模量,电容和电导)来解释。线性稳定性分析表明,膜电导和嵌入电解质溶液中的不对称性使界面不稳定。然而,在普通的流体-流体界面不稳定的情况下,电容式充电起到稳定系统的作用。
Abstract The interface defining a biological cell is a thin membrane, which acts as a leaky capacitor. We investigate the influence of capacitance and conductivity on the stability of a planar membrane subjected to a DC electric field. We develop a zero-thickness model of the membrane, in which the bilayer finite thickness is effectively accounted for by membrane electro-mechanical properties such as bending modulus, capacitance and conductance. The linear stability analysis shows that membrane conductance and asymmetry in the embedding electrolyte solutions destabilize the interface. However, the capacitive charging acts to stabilize the system under conditions where an ordinary fluid–fluid interface is unstable.
DOI: 10.1016/s0006-3495(99)76973-0
发表时间: 1999-09-01
影响因子: 3.4
作者:
DeBruin, KA;Krassowska, W
通讯作者: Krassowska, W
DOI: 10.1016/s0006-3495(89)82898-x
发表时间: 1989-05-01
影响因子: 3.4
作者:
NEEDHAM, D;HOCHMUTH, RM
通讯作者: HOCHMUTH, RM