Avoidance model for soft particles. II. Positional ordering of charged rods.
Avoidance model for soft particles. II. Positional ordering of charged rods.
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软颗粒的回避模型。
DOI：
10.1103/physreve.61.6872
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Herzfeld,J
中科院分区：
文献类型：
--
作者：
Kramer,EM;Herzfeld,J
计算了平行带电球柱的相图。发现图的拓扑结构与不带电图相似，但有几个质的变化。相共存区域明显变窄，位置有序被静电斥力稳定。向列相占据一个很窄的区域。我们认为表面活性剂胶束之间的软排斥可能是大多数表面活性剂体系中缺乏向列相的原因。我们还比较了fd和烟草花叶病毒颗粒的向列-近晶相变。
The phase diagram of parallel, charged spherocylinders is computed. The topology of the diagram is found to be similar to the uncharged one, but there are several qualitative changes. Regions of phase coexistence are significantly narrower and positional ordering is stabilized by the electrostatic repulsions. The nematic phase occupies a very narrow zone. We suggest that soft repulsions between surfactant micelles may be responsible for the absence of a nematic phase in most surfactant systems. We also present comparisons with the observed nematic-smectic phase transition for fd and tobacco mosaic virus particles.