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Effect of Surface Termination on Super-Low Friction of Diamond Film: A Computational Chemistry Study
Published May 21, 2008 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Meeting
We applied computational chemistry methods to analyze the effects of H and OH terminations on the frictional properties of diamond film. Molecular dynamics simulations show that the frictional force is clearly decreased by H or OH termination on the diamond surfaces. Moreover, results of density functional theory calculations show that a covalent bond is formed between Fe and C, while H- or OH-terminated diamond surfaces do not interact covalently with iron surface owing to nonbonding interactions. We concluded that this interaction change between iron and diamond surfaces is the major contributing factor for achieving superlow friction in H- or OH-terminated diamond.
- Yusuke Morita - Tohoku Univ.
- Tasuku Onodera - Tohoku Univ.
- Ai Suzuki - Tohoku Univ.
- Riadh Sahnoun - Tohoku Univ.
- Michihisa Koyama - Tohoku Univ.
- Hideyuki Tsuboi - Tohoku Univ.
- Mozomu Hatakeyama - Tohoku Univ.
- Akira Endou - Tohoku Univ.
- Hiromitsu Takaba - Tohoku Univ.
- Carlos Del Carpio - Tohoku Univ.
- Momoji Kubo - Tohoku Univ.
- Akira Miyamoto - Tohoku Univ.