Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 414, Issue -, Pages 9-13Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2013.09.041
Keywords
Slip length; Superomniphobic surface; Drag reduction; Liquids
Categories
Funding
- National Natural Science Foundation of China [21125316, 51335010]
- 973 project [2013CB6 32300]
- Chinese Academy of Sciences [KJZD-EW-M01]
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Water slips exist over superhydrophobic solid surfaces, but the slip flow of diverse liquids on a single surface has not been deliberately studied to date. Here, we report the slip flow behavior of a variety of liquids with different surface tensions and viscosities on a robust omniphobic surface. This surface displayed a dramatic slippage effect and thus a high drag reduction efficiency of approximately 10-20% for all liquids, depending on both liquid viscosity and surface energy. The observed liquid slip was attributed to the surface dual micro/nanostructure and the low-surface-energy coating. (C) 2013 Elsevier Inc. All rights reserved.
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