近日，厦门大学的陈立杰及其研究团队取得一项新进展。经过不懈努力，他们基于分子动力学揭示了液滴悬浮和聚并过程中的蒸发机理。相关研究成果已于2024年6月4日在国际知名学术期刊《理论与应用力学快报》上发表。

据悉，液滴的悬浮和聚并机制一直是科学研究的热点。

该研究团队从分子相互作用的角度，研究了蒸汽压对液滴悬浮和聚并的影响。研究过程中，他们运用非平衡分子动力学方法，模拟了纳米液滴与液池在不同初始环境下的蒸发过程。通过详细分析液滴悬浮和聚并时蒸发的作用机制，研究人员证实了克努森层的存在。在蒸发过程中，他们发现形成的是由水分子构成的克努森层，而非水团。他们研究了层的定义、性质和形成机理。

附：英文原文

Title: Evaporation Mechanisms during Droplet Levitation and Coalescence Based on Molecular Dynamics

Author: Fengming Chen, Tieqiang Gang, Lijie Chen

Issue&Volume: 2024-06-04

Abstract: Droplet levitation and coalescence mechanisms have consistently been a focal point in scientific research. From the perspective of molecular interactions, we investigated the influence of vapor pressure on the levitation and coalescence of droplets. The evaporation of nanodroplets and liquid pools under different initial environments was simulated by nonequilibrium molecular dynamics. The study analyzed the effects of evaporation during the processes of droplet levitation and coalescence and determined the existence of the Knudsen layer. Knudsen layers consisting of water molecules rather than clusters are generated during the evaporation. The definition, properties, and mechanisms of the layers were investigated.

DOI: 10.1016/j.taml.2024.100533

Source: http://taml.cstam.org.cn/article/doi/10.1016/j.taml.2024.100533?pageType=en