Electron beam heating effects during environmental scanning electron microscopy imaging of water condensation on superhydrophobic surfaces
Electron beam heating effects during environmental scanning electron microscopy imaging of water condensation on superhydrophobic surfaces
复制标题
DOI：
10.1063/1.3560443
复制
发表时间：
2011-02-28
影响因子：
4
通讯作者：
Fedorov, A. G.
中科院分区：
文献类型：
--
作者：
Rykaczewski, K.;Scott, J. H. J.;Fedorov, A. G.
超疏水表面（SHSs）作为滴状缩合的促进剂具有广阔的前景。在液滴冷凝过程中，直径小于10 μ m的液滴占了传热的大部分，但它们在SHS上的生长动力学尚未得到系统的研究。由于表面环境的复杂地形，扫描电子显微镜是观察这种尺寸下液滴生长动力学的首选方法。通过研究电子束对冷凝水滴的加热效应，我们建立了一个放大极限，在此极限下加热效应可以忽略不计，并利用这一见解来研究单个水滴的生长机制。(C) 2011年美国物理研究所。(doi: 10.1063/1.3560443)
Superhydrophobic surfaces (SHSs) show promise as promoters of dropwise condensation. Droplets with diameters below similar to 10 mu m account for the majority of the heat transferred during dropwise condensation but their growth dynamics on SHS have not been systematically studied. Due to the complex topography of the surface environmental scanning electron microscopy is the preferred method for observing the growth dynamics of droplets in this size regime. By studying electron beam heating effects on condensed water droplets we establish a magnification limit below which the heating effects are negligible and use this insight to study the mechanism of individual drop growth. (C) 2011 American Institute of Physics. [doi:10.1063/1.3560443]