论文标题
表现出液态多态性和水样异常的流体的界面特性
Interfacial Properties of Fluids Exhibiting Liquid Polyamorphism and Water-Like Anomalies
论文作者
论文摘要
据推测，液态多态性是单个成分物质中多个无定形态的存在，可能是由分子或超分子互转换引起的。一个简单的微观模型[Caupin和Anisimov，Phys。 Rev. Lett。，127，185701，（2021）]在可压缩的二进制晶格中引入相互转换，以生成表现出液态多态性和/或水样异常的流体的各种热力学场景。使用此模型，我们证明了互连对界面特性的戏剧性影响。特别是，我们发现液体蒸气表面张力在其温度依赖性中表现出一个拐点或两个极值。相应地，我们观察到界面厚度的异常行为，以及相对于密度谱的位置的浓度曲线位置的显着转移。
It has been hypothesized that liquid polyamorphism, the existence of multiple amorphous states in a single component substance, may be caused by molecular or supramolecular interconversion. A simple microscopic model [Caupin and Anisimov, Phys. Rev. Lett., 127, 185701, (2021)] introduces interconversion in a compressible binary lattice to generate various thermodynamic scenarios for fluids that exhibit liquid polyamorphism and/or water-like anomalies. Using this model, we demonstrate the dramatic effects of interconversion on the interfacial properties. In particular, we find that the liquid-vapor surface tension exhibits either an inflection point or two extrema in its temperature dependence. Correspondingly, we observe anomalous behavior of the interfacial thickness and a significant shift in the location of the concentration profile with respect to the location of the density profile.
