Abstract In this study, the phase transition of confined argon in slit by Lennard-Jones (12-6) potential for fluids-fluids and walls-fluids interactions is investigated. The effects of temperature, pressure, and distance between the two walls on the phase transition were investigated by using the molecular dynamics simulation and LAMMPS software. It was found that wall distances had a significant effect on phase transition. Although the molecules were spherical and the walls structureless, liquid-liquid phase transition was observed when wall distances were approximately 3σ; that is, confinement had a determining role in phase transition in confined fluids.

中文翻译：

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简单 Lennard-Jones 纳米受限流体中的液-液相变

摘要 本研究通过Lennard-Jones (12-6)势对流体-流体和壁-流体相互作用势在狭缝中约束氩的相变进行了研究。使用分子动力学模拟和 LAMMPS 软件研究了温度、压力和两壁之间的距离对相变的影响。发现壁距对相变有显着影响。虽然分子是球形的，壁面无结构，但当壁距约为 3σ 时观察到液-液相转变；也就是说，限制在限制流体的相变中起决定性作用。