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 polymer- izing 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.
Self-assembly-driven nematization / Nguyen, KHANH THUY; Sciortino, Francesco; DE MICHELE, Cristiano. - In: LANGMUIR. - ISSN 0743-7463. - 30:16(2014), pp. 4814-4819. [10.1021/la500127n]
Self-assembly-driven nematization
NGUYEN, KHANH THUY;SCIORTINO, Francesco;DE MICHELE, CRISTIANO
2014
Abstract
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 polymer- izing 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.File | Dimensione | Formato | |
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