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|a 10.1021/la104254a
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|a eng
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| 100 |
1 |
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|a Vafaei, Saeid
|e verfasserin
|4 aut
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| 245 |
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|a Nanofluid surface wettability through asymptotic contact angle
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|c 2011
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|a Text
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|a ƒaComputermedien
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|a Date Completed 21.10.2014
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|a Date Revised 04.02.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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| 520 |
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|a This investigation introduces the asymptotic contact angle as a criterion to quantify the surface wettability of nanofluids and determines the variation of solid surface tensions with nanofluid concentration and nanoparticle size. The asymptotic contact angle, which is only a function of gas-liquid-solid physical properties, is independent of droplet size for ideal surfaces and can be obtained by equating the normal component of interfacial force on an axisymmetric droplet to that of a spherical droplet. The technique is illustrated for a series of bismuth telluride nanofluids where the variation of surface wettability is measured and evaluated by asymptotic contact angles as a function of nanoparticle size, concentration, and substrate material. It is found that the variation of nanofluid concentration, nanoparticle size, and substrate modifies both the gas-liquid and solid surface tensions, which consequently affects the force balance at the triple line, the contact angle, and surface wettability
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|a Journal Article
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|a Wen, Dongsheng
|e verfasserin
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|a Borca-Tasciuc, Theodorian
|e verfasserin
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 27(2011), 6 vom: 15. März, Seite 2211-8
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