期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 12, 页码 8976-8980出版社
AMER CHEMICAL SOC
DOI: 10.1021/am502607e
关键词
antifrosting coatings; superhydrophobic; nanostructure; condensate jumping; energy effective; weak heating
资金
- National Basic Research Program of China [2012CB933200]
- Key Research Program of the Chinese Academy of Sciences [KJZD-EW-M01]
- China Postdoctoral Science Foundation [2013M541746]
- Natural Science Foundation of Jiangsu Province [BK20130355]
We demonstrate the feasibility of superhydrophobic aligned nanocones as energy-effective frost-free coatings. Exemplified by Co(OH)(2) nanocone films with condensed microdrop self-removal ability, their edge and whole-surface frosting time can be delayed to about 10 and 150 min, respectively. By using a Teflon gasket to shield edges, the samples can keep frost-free state over 90 min. Further, the lasting frost-free state can be realized by intermittent weak airflow heating, which is energy-effective in contrast to usual high-power heating for defrosting flat surfaces. These findings are significant to develop antifrosting nanotechnologies for energy-effective heat exchangers such as heat pumps and refrigerators.
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