Ningbo Key Laboratory of Marine Protection Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
J Colloid Interface Sci. 2012 Feb 1;367(1):450-4. doi: 10.1016/j.jcis.2011.11.008. Epub 2011 Nov 13.
The droplet control, especially for the self-propelled Leidenfrost droplet, has attracted many researchers' attention in applied and fundamental fields. In this paper, the ratchet thin film was fabricated by magnetron sputtering and hybrid ion beams deposition. The micro- and nanoscale structure of the film was characterized by field emission scanning electron microscope. This study reports an interesting phenomenon that the self-propelled Leidenfrost water droplet was initiated at low temperature. The Leidenfrost point of droplets was controlled by the surface wettability and parameters of the asymmetric ratchet substrate. This novel self-propelled interfacial material and preparation technology can be expanded to the manufacture process and constructed a temperature-dependent tubule for microfluidic systems.
液滴控制，特别是自推进莱顿弗罗斯特液滴，在应用和基础领域引起了许多研究人员的关注。在本文中，通过磁控溅射和混合离子束沉积制备了棘轮薄膜。通过场发射扫描电子显微镜对薄膜的微纳结构进行了表征。本研究报告了一个有趣的现象，即在低温下启动了自推进莱顿弗罗斯特水滴。液滴的莱顿弗罗斯特点由表面润湿性和不对称棘轮基底的参数控制。这种新颖的自推进界面材料和制备技术可以扩展到制造工艺，并为微流控系统构建一个依赖温度的管道。
