TY - JOUR
T1 - Effect of viscosity ratio on the shear-driven failure of liquid-infused surfaces
AU - Liu, Ying
AU - Wexler, Jason S.
AU - Schönecker, Clarissa
AU - Stone, Howard A.
N1 - Funding Information:
This work was supported under Office of Naval Research Multidisciplinary University Research Initiative (MURI) Grants No. N00014-12-1-0875 and No. N00014-12-1-0962 and funding from German Academic Exchange Service. We thank Dr. Z. Zheng for helpful advice on the model, Professor A. J. Smits, Professor M. Hultmark, and all the other team members of our MURI project for their valuable feedback.
Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/11
Y1 - 2016/11
N2 - Liquid-infused surfaces display great advantages such as omniphobicity, anti-icing, antifouling, and self-cleaning. They can also reduce the drag of an object moving through an immiscible fluid since there is slip along the fluid-fluid interface. However, the trapped liquids are susceptible to the shear of the external flow, which will drain the lubricants from the surfaces and hinder their practical use. In this study, we investigate the shear-driven failure of liquid-infused surfaces under a broad range of ratios of the viscosity of the external fluid to that of the lubricant. The effect of viscosity ratio on the steady-state lubricant retention is characterized experimentally and analyzed analytically. The model offers a possible way to estimate the shear-driven failure of surfaces filled with different lubricants. In particular, it is shown that for a given external flow a lower lubricant viscosity results in more infused fluid being retained.
AB - Liquid-infused surfaces display great advantages such as omniphobicity, anti-icing, antifouling, and self-cleaning. They can also reduce the drag of an object moving through an immiscible fluid since there is slip along the fluid-fluid interface. However, the trapped liquids are susceptible to the shear of the external flow, which will drain the lubricants from the surfaces and hinder their practical use. In this study, we investigate the shear-driven failure of liquid-infused surfaces under a broad range of ratios of the viscosity of the external fluid to that of the lubricant. The effect of viscosity ratio on the steady-state lubricant retention is characterized experimentally and analyzed analytically. The model offers a possible way to estimate the shear-driven failure of surfaces filled with different lubricants. In particular, it is shown that for a given external flow a lower lubricant viscosity results in more infused fluid being retained.
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U2 - 10.1103/PhysRevFluids.1.074003
DO - 10.1103/PhysRevFluids.1.074003
M3 - Article
AN - SCOPUS:85031278357
SN - 2469-990X
VL - 1
JO - Physical Review Fluids
JF - Physical Review Fluids
IS - 7
M1 - 074003
ER -