Tribological properties of OTS self-assembled monolayers |
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Authors: | Wei Jiang Jianbin Luo Shizhu Wen |
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Affiliation: | JIANG Wei, LUO Jianbin & WEN Shizhu State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China |
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Abstract: | Octadecyltrichlorosilane (OTS) self-assembled monolayers (SAMs) were prepared on the substrates of silicon and glass. The tribological properties were tested with a self-made point-contact pure sliding micro tribometer. The effect of humidity on the tribological properties of both OTS SAMs and the naked substrates were studied. When the substrate is covered by OTS monolayer, the friction coefficient is reduced from 0.5 to 0.1 and the stick-slip phenomenon is weakened. OTS monolayer can keep its friction coefficient steady in a wide range of humidity, because it is highly hy-drophobic and thus not sensitive to humidity. In addition, the OTS monolayer has a considerable anti-wear ability. |
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Keywords: | OTS SAMs micro-tribology friction and lubrication relative humidity. |
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