Wolfson Applied Materials Research Center, Tel-Aviv University, Tel-Aviv 69978, Israel.
Langmuir. 2010 Dec 7;26(23):18581-4. doi: 10.1021/la103772h. Epub 2010 Nov 12.
The dynamics of water condensation on self-supported thin films was studied at the nanoscale using transmitted electrons in an environmental scanning electron microscope. The initial stages of nucleation and growth over nanothick water films have been investigated. Irregularities at the water-film boundaries constituted nucleation sites for asymmetric dropwise and filmwise condensation. Nanodroplet growth was associated with center of mass movement, and the dynamic growth power law dependence was explored for the nanoscale.
采用环境扫描电子显微镜中的透射电子研究了自支撑薄膜上水的冷凝动力学。研究了纳米厚水膜上形核和生长的初始阶段。水膜边界的不规则性构成了非对称滴状和膜状冷凝的形核点。纳米液滴的生长与质心的运动有关,并探索了纳米尺度下的动态生长幂律关系。