超薄粘性薄膜中纳米柱阵列的形成：热毛细应力的关键作用
Formation of Nanopillar Arrays in Ultrathin Viscous Films: The Critical Role of Thermocapillary Stresses
摘要：
在过去的十年中，几个小组的实验表明，熔融的聚合物纳米膜受到大的横向热梯度经历周期性纳米柱阵列的自发形成。普遍的解释是，在膜内的声学声子的相干反射引起辐射压力的周期性调制，这增强了柱生长。通过探索与纳米膜特别相关的变形不稳定性，我们证明了热毛细作用力在形成过程中起着至关重要的作用。分析和数值预测表明，与实验中得到的支柱间距很好的协议。界面方程的模拟进一步确定了对技术应用具有重要意义的柱体生长速率。
英文摘要：
Experiments by several groups during the past decade have shown that a molten polymer nanofilm subject to a large transverse thermal gradient undergoes spontaneous formation of periodic nanopillar arrays. The prevailing explanation is that coherent reflections of acoustic phonons within the film cause a periodic modulation of the radiation pressure which enhances pillar growth. By exploring a deformational instability of particular relevance to nanofilms, we demonstrate that thermocapillary forces play a crucial role in the formation process. Analytic and numerical predictions show good agreement with the pillar spacings obtained in experiment. Simulations of the interface equation further determine the rate of pillar growth of importance to technological applications.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
