TITLE

Metal pumps liquid uphill

AUTHOR(S)
Vorobyev, A. Y.; Chunlei Guo
PUB. DATE
June 2009
SOURCE
Applied Physics Letters;6/1/2009, Vol. 94 Issue 22, p224102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The behavior of liquids on a solid surface is determined by the surface wettability. In this work, by structuring metal surfaces with high-intensity femtosecond laser pulses, we engineer a unique surface pattern that dramatically modifies surface wetting properties. In a gravity-defying way, the treated metal surfaces make liquids sprint vertically uphill at an unprecedented speed of 1 cm/s. Furthermore, the surface structures we create here rapidly transport a significant amount of liquid against gravitation to an elevated point above the reservoir level, thus bringing this effect to potential real-life applications.
ACCESSION #
41139473

 

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