论文标题
与表面接触的三相系统的润湿行为
Wetting behaviour of a three-phase system in contact with a surface
论文作者
论文摘要
我们扩展了二进制混合物的cahn-landau-de基因平均场理论，以理解三相系统的润湿热力学，该动力学与外表面接触，而外表面更喜欢其中一个相。我们使用具有三个最小值的现象学自由能对系统进行建模，对应于低密度和高密度相。通过系统地改变中心最小值的\ textIt {（i）}深度，\ textit {（ii）}表面相互作用参数，我们探索了与三个相位共有性相对应的三重点的系统行为和系统的润湿特性。我们观察到跨三个点的表面张力的非单调依赖性，这与完全润湿过渡有关。然后，将该方法应用于研究聚合物液晶体混合物的润湿行为，并使用重新规定的自由能与表面接触。我们的工作提供了一种询问相位行为和润湿生物聚合物在细胞环境中的过渡的方法。
We extend the Cahn-Landau-de Gennes mean field theory of binary mixtures to understand the wetting thermodynamics of a three phase system, that is in contact with an external surface which prefers one of the phases. We model the system using a phenomenological free energy having three minima corresponding to low, intermediate and high density phases. By systematically varying the \textit{(i)} depth of the central minimum, \textit{(ii)} the surface interaction parameters, we explore the phase behavior, and wetting characteristics of the system across the triple point corresponding to three phase coexistence. We observe a non-monotonic dependence of the surface tension across the triple point that is associated with a complete to partial wetting transition. The methodology is then applied to study the wetting behaviour of a polymer-liquid crystal mixture in contact with a surface using a renormalised free energy. Our work provides a way to interrogate phase behavior and wetting transitions of biopolymers in cellular environments.
