原子間力顕微鏡による三相界線ナノ構造のダイナミック解析

由于界面相变和非平衡热输运的复杂性，挥发性液滴中的扩散和流动转变仍然存在争议，因此人们对蒸发液滴的润湿动力学进行了广泛的研究。我们用数学模型和实验证明，挥发性液滴的润湿动力学可以通过毛细、蒸发和热Marangoni效应之间的时空相互作用来衡量。我们在详细的理论和实验分析的基础上，使用相图来量化这些复杂的相互作用。通过将Tanner定律(适用于非挥发性液体)推广到饱和蒸气压为101~104Pa全范围的液体和导热系数为10~(-1)~103W/m/K的衬底上，进一步说明了液滴的扩散规律，这些结论除了在流体工业中的重要性外，还可以统一解释一系列单独的工作，包括流动逆转判据和动态润湿状态，使得在不同的应用场景中控制液体的传输成为可能。到目前为止的调查结果已经汇总，并将于最近提交。

Extensive investigations have been carried out on the wetting dynamics of evaporative droplets, as the fact that the spreading and flow transition in volatile droplets remains controversial due to the complexity added by interfacial phase change and non-equilibrium thermal transport. We show, using both mathematical modeling and experiments, that the wetting dynamics of volatile droplets can be scaled by the spatial temporal interplay between capillary, evaporation, and thermal Marangoni effects. We quantify these complex interactions using phase diagrams based on detailed theoretical and experimental analyses. We further illustrate the spreading law of droplets by generalizing Tanner’s law (valid for non-volatile liquids) to a full range of liquids with saturation vapor pressure spanning from 101 to 104 Pa and on substrates with thermal conductivity spanning from 10-1 to 103 W/m/K. Besides its importance in fluid-based industries, the conclusions also enable a unifying explanation to a series of individual works including the criterion of flow reversal and the state of dynamic wetting, making it possible to control liquid transport in diverse application scenarios. The findings to date have been summarized and will be submitted recently.