论文标题
薄膜的孔发射熔化过程
Hole-initiated melting process of thin films
论文作者
论文摘要
我们对小孔发起的薄膜的熔化过程进行数值和实验研究。非平凡毛细血管表面的存在，即液体/空气界面，会导致一些违反直觉的结果：（1）如果膜表面可以部分润湿，即使具有较小的接触角，熔点也会升高。 （2）对于尺寸有限的薄膜，熔化可能更喜欢从外部边界开始，而不是内部的孔。 （3）可能会出现更复杂的熔化场景，包括形态过渡，“事实上”熔点是一个范围而不是单个值。通过实验二氧化硅和空气之间融化的烷烃膜进行了验证。这项工作继续对有关熔化的毛细血管方面进行了一系列调查。我们的模型和分析方法都可以轻松地推广到其他系统。
We perform numerical and experimental studies on the melting process of thin films initiated by a small hole. The presence of a non-trivial capillary surface, namely the liquid/air interface, leads to a few counter-intuitive results: (1) The melting point is elevated if the film surface is partially wettable, even with a small contact angle. (2) For a film that is finite in size, melting may prefer to start from the outer boundary, rather than a hole inside. (3) More complex melting scenario may arise, including morphology transitions, and the "de facto" melting point being a range instead of a single value. These are verified by experiments on melting alkane films between silica and air. This work continues a series of investigations on the capillary aspects on melting. Both our model and analysis approach can be easily generalized to other systems.
