Superoleophobicity under vacuum

Xinjie Liu; Xiaolong Wang; Yongmin Liang; Steven E.J. Bell; Weimin Liu; Feng Zhou

doi:10.1063/1.3589352

Superoleophobicity under vacuum

Xinjie Liu, Xiaolong Wang, Yongmin Liang, Steven E.J. Bell, Weimin Liu, Feng Zhou

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

By using superoleophobic alumina and low vapor pressure oils we have been able to study wetting behavior at high vacuum. Here, we show that a superoleophobic state can exist for some probe liquids, even under high vacuum. However, with other liquids the surfaces are only superoloephobic because air is trapped beneath the droplet and the contact angle decreases dramatically (150°-120°) if this air is removed. These observations open up the possibility of designing materials which fully exploit the potential of physically trapped air to achieve extreme oleophobicity and/or hydrophobicity.

Original language	English
Article number	194102
Journal	Applied Physics Letters
Volume	98
Issue number	19
DOIs	https://doi.org/10.1063/1.3589352
State	Published - 9 May 2011
Externally published	Yes

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title = "Superoleophobicity under vacuum",

abstract = "By using superoleophobic alumina and low vapor pressure oils we have been able to study wetting behavior at high vacuum. Here, we show that a superoleophobic state can exist for some probe liquids, even under high vacuum. However, with other liquids the surfaces are only superoloephobic because air is trapped beneath the droplet and the contact angle decreases dramatically (150°-120°) if this air is removed. These observations open up the possibility of designing materials which fully exploit the potential of physically trapped air to achieve extreme oleophobicity and/or hydrophobicity.",

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AU - Liu, Xinjie

AU - Wang, Xiaolong

AU - Liang, Yongmin

AU - Bell, Steven E.J.

AU - Liu, Weimin

AU - Zhou, Feng

PY - 2011/5/9

Y1 - 2011/5/9

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AB - By using superoleophobic alumina and low vapor pressure oils we have been able to study wetting behavior at high vacuum. Here, we show that a superoleophobic state can exist for some probe liquids, even under high vacuum. However, with other liquids the surfaces are only superoloephobic because air is trapped beneath the droplet and the contact angle decreases dramatically (150°-120°) if this air is removed. These observations open up the possibility of designing materials which fully exploit the potential of physically trapped air to achieve extreme oleophobicity and/or hydrophobicity.

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JO - Applied Physics Letters

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Superoleophobicity under vacuum

Abstract

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