期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 19, 页码 2415-2421出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201202566
关键词
self-assembled monolayers; organoarsonate; wear; nanotribology; nanoscratching
类别
资金
- National Institute of Mental Health [1R01MH085495]
The development of new surface coatings is critical for combating wear and increasing the device lifetime in microelectromechanical systems (MEMS). Here, a class of arsonic acid self-assembled monolayers (SAMs) is reported that form readily on oxide substrates including silicon oxide, borosilicate glass, and titanium oxide. Monolayers are easily prepared using a straightforward soaking technique, which is amenable to large-scale commercial applications. Monolayer formation on borosilicate glass and titanium oxide is characterized using infrared spectroscopy. Monolayers on borosilicate glass, native silicon oxide and titanium oxide are evaluated with contact angle measurements, as well as wear measurements using nanoscratching experiments. On titanium oxide and borosilicate glass, monolayers prepared from hexadecylarsonic acid provide significantly greater surface protection than surfaces reacted under similar conditions with hexadecylphosphonic acid, a common modifying agent for oxide substrates.
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