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Frictional characteristics of exfoliated and epitaxial graphene

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arxiv 1208.1830 v1 pith:YHAVY3DZ submitted 2012-08-09 cond-mat.mtrl-sci cond-mat.mes-hall

Frictional characteristics of exfoliated and epitaxial graphene

Young Jun Shin , Ryan Stromberg , Rick Nay , Han Huang , Andrew T. S. Wee , Hyunsoo Yang , Charanjit S. Bhatia This is my paper
classification cond-mat.mtrl-sci cond-mat.mes-hall
keywords graphenefrictioncoefficientdetermineepitaxialexfoliatedscratchtests
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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To determine the friction coefficient of graphene, micro-scale scratch tests are conducted on exfoliated and epitaxial graphene at ambient conditions. The experimental results show that the monolayer, bilayer, and trilayer graphene all yield friction coefficients of approximately 0.03. The friction coefficient of pristine graphene is less than that of disordered graphene, which is treated by oxygen plasma. Ramping force scratch tests are performed on graphene with various numbers of layers to determine the normal load required for the probe to penetrate graphene. A very low friction coefficient and also its high pressure resistance make graphene a promising material for antiwear coatings.

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