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Turning a surface superrepellent even to completely wetting liquids

Open access
Liu, Tingyi “Leo”, Kim, Chang-Jin “CJ”·2014·Science

Abstract

Superhydrophobic and superoleophobic surfaces have so far been made by roughening a hydrophobic material. However, no surfaces were able to repel extremely-low-energy liquids such as fluorinated solvents, which completely wet even the most hydrophobic material. We show how roughness alone, if made of a specific doubly reentrant structure that enables very low liquid-solid contact fraction, can render the surface of any material superrepellent. Starting from a completely wettable material (silica), we micro- and nanostructure its surface to make it superomniphobic and bounce off all available liquids, including perfluorohexane. The same superomniphobicity is further confirmed with identical surfaces of a metal and a polymer. Free of any hydrophobic coating, the superomniphobic silica surface also withstands temperatures over 1000°C and resists biofouling.

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  • Wettability of porous surfaces

    Cassie, A. B. D., & Baxter, S. (1944) · Transactions of the Faraday Society · doi:10.1039/tf9444000546 · Cited by 13,807 · cited 2×

    “The microstructures should first be able to suspend the liquid, supporting a composite interface proposed by Cassie and Baxter ( 23 ).”

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Metadata

Authors
Liu, T. “., & Kim, C.-J. “.
Venue
Science
Published
2014-11-28
Volume
346
Issue
6213
Pages
1096-1100
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2055306728
Cited by
1,149
References
1
FWCI
30.54
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Turning a surface superrepellent even to completely wetting liquids. https://app.cochat.ai/papers/10.1126/science.1254787
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Liu, T. “., & Kim, C.-J. “. (2014). Turning a surface superrepellent even to completely wetting liquids. Science. https://doi.org/10.1126/science.1254787

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