Energy-Effective Frost-Free Coatings Based on Superhydrophobic Aligned Nanocones
ACS Applied Materials & Interfaces2014Vol. 6(12), pp. 8976–8980
Citations Over TimeTop 10% of 2014 papers
Abstract
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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