Self-Assembly-Driven Nematization
Self-Assembly-Driven Nematization
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DOI：
10.1021/la500127n
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发表时间：
2014-04-29
期刊：
影响因子：
3.9
通讯作者：
De Michele, Cristiano
中科院分区：
文献类型：
--
作者：
Khanh Thuy Nguyen;Sciortino, Francesco;De Michele, Cristiano
粒子之间的吸引相互作用的各向异性可以通过自组装过程促进线性半柔性链的形成。在适当的温度和浓度范围内，增长的纵横比的聚集体可以诱导形成一个无定形相，最近在几个生物学相关的系统实验观察到。我们在这里提出了一个数值研究的各向同性的双功能聚合硬圆柱体的模型，最近的理论方法提供了一个准确的基准，并评估他们的能力，捕捉自组装和取向有序之间的耦合。的比较表明，正确建模排除体积和取向熵的重要性，并提供了一些理论预测的定量确认。
The anisotropy of attractive interactions between particles can favor, through a self-assembly process, the formation of linear semi-flexible chains. In the appropriate temperatures and concentration ranges, the growing aspect ratio of the aggregates can induce formation of a nematic phase, as recently experimentally observed in several biologically relevant systems. We present here a numerical study of the isotropic-nematic phase boundary for a model of bifunctional polymerizing hard cylinders, to provide an accurate benchmark for recent theoretical approaches and to assess their ability to capture the coupling between self-assembly and orientational ordering. The comparison indicates the importance of properly modeling excluded volume and orientational entropy and provides a quantitative confirmation of some theoretical predictions.