Casimir and mean-field interactions between membrane inclusions subject to external torques
Casimir and mean-field interactions between membrane inclusions subject to external torques
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DOI：
10.1209/epl/i1999-00253-5
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发表时间：
1999-04-02
期刊：
影响因子：
--
通讯作者：
Fournier, JB
中科院分区：
文献类型：
--
作者：
Dommersnes, PG;Fournier, JB
嵌入波动流体膜中的内含物已被证明经历膜介导的力衰减为1/R-4。将夹杂物建模为膜曲率张量的局部约束，我们表明外部扭矩（机械扭矩或场致扭矩）的存在强烈增强并增加了相互作用的范围。发现排斥性平均场贡献和吸引性涨落（Casimir）贡献的范围为1/R-2或更长，这可能联合收割机产生平衡距离。
Inclusions embedded in fluctuating fluid membranes have been shown to experience membrane mediated forces decaying as 1/R-4. Modeling the inclusions as local constraints on the membrane curvature tensor, we show that the presence of external torques (mechanical or field-induced) strongly enhances and increases the range of the interactions. Repulsive mean-field contributions and attractive fluctuation (Casimir) contributions of range 1/R-2 or longer are found, which may combine to yield equilibrium distances.