Evaporation and condensation on two-tier superhydrophobic surfaces

Chuan Hua Chen, Qingjun Cai, Chung-Lung Chen*

*Corresponding author for this work

研究成果: Conference contribution同行評審

1 引文 斯高帕斯(Scopus)

摘要

Superhydrophobic surfaces exhibit large contact angle and small hysteresis which promote liquid transport and enhance heat transfer. Here, liquid-vapor phase change behavior is reported on superhydrophobic surfaces with short carbon nanotubes deposited on micromachined posts, a two-tier texture mimicking the surface structure of lotus leaves. Compared to one-tier microtexture which energetically favors the Wenzel state, the two-tier texture with nanoscale roughness favors the Cassie state, the desired superhydrophobic state. During droplet evaporation, the two-tier texture delays the transition from Cassie to Wenzel state. Using two-tier texture with hexadeconethiol coating, continuous dropwise condensation was demonstrated for the first time on engineered superhydrophobic surfaces.

原文English
主出版物標題2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008
頁面1021-1022
頁數2
DOIs
出版狀態Published - 20 八月 2008
事件1st ASME Micro/Nanoscale Heat Transfer International Conference, MNHT08 - Tainan, Taiwan
持續時間: 6 一月 20089 一月 2008

出版系列

名字2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008
PART B

Conference

Conference1st ASME Micro/Nanoscale Heat Transfer International Conference, MNHT08
國家Taiwan
城市Tainan
期間6/01/089/01/08

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