Authors
Xuemei Chen, Jun Wu, Ruiyuan Ma, Meng Hua, Nikhil Koratkar, Shuhuai Yao, Zuankai Wang
Publication date
2011/12/20
Journal
Advanced functional materials
Volume
21
Issue
24
Pages
4617-4623
Publisher
WILEY‐VCH Verlag
Description
Engineering the dropwise condensation of water on surfaces is critical in a wide range of applications from thermal management (e.g. heat pipes, chip cooling etc.) to water harvesting technologies. Surfaces that enable both efficient droplet nucleation and droplet self‐removal (i.e. droplet departure) are essential to accomplish successful dropwise condensation. However it is extremely challenging to design such surfaces. This is because droplet nucleation requires a wettable surface while droplet departure necessitates a super‐hydrophobic surface. Here we report that these conflicting requirements can be satisfied using a hierarchical (multiscale) nanograssed micropyramid architecture that yield a gobal superhydrophobicity as well as locally wettable nucleation sites, allowing for ˜65% increase in the drop number density and ˜450% increase in the drop self‐removal volume as compared to a superhydrophobic …
Total citations
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Scholar articles
X Chen, J Wu, R Ma, M Hua, N Koratkar, S Yao… - Advanced functional materials, 2011