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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la104353f
|2 doi
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|a eng
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|a Park, Jeong Young
|e verfasserin
|4 aut
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|a Tuning nanoscale friction on Pt nanoparticles with engineering of organic capping layer
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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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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|a Nanoscale friction and adhesion on Pt colloid nanoparticles coated with different organic capping layers were probed with atomic/friction force microscopy. Platinum colloid nanoparticles with four types of capping layers have been synthesized and used as model lubricant systems: TTAB (tetradecyltrimethylammonium bromide), HDA (hexadecylamine), HDT (hexadecylthiol), and PVP (poly(vinylpyrrolidone)). Two-dimensional arrays of colloid nanoparticles were prepared using the Langmuir-Blodgett method. We found that the friction and adhesion properties on colloid nanoparticles are lower than those on a silicon surface. The variation of friction when changing the capping layers is ∼30%, and it appears that the friction depends on the packing and ordering of the capping layers. Partial removal of the capping layers using ultraviolet light (UV)-ozone surface treatment resulted in increased friction. These results suggest a new method of tuning nanometer scale friction and adhesion by engineering organic capping layers on nanoparticles
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|a Journal Article
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 6 vom: 15. März, Seite 2509-13
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|x 1520-5827
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| 773 |
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|g volume:27
|g year:2011
|g number:6
|g day:15
|g month:03
|g pages:2509-13
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|u http://dx.doi.org/10.1021/la104353f
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