Friction and Dissipation in Epitaxial Graphene Films

作者：Tobin Filleter, Jessica L. McChesney, Aaron Bostwick, Eli Rotenberg, K. V. Emtsev, Thomas K. Seyller, K. Horn, Roland Bennewitz · 发表于：Physical Review Letters · 年份：2009 · DOI：10.1103/physrevlett.102.086102 · 被引用次数：576 · 研究领域：Graphene research and applications、Force Microscopy Techniques and Applications、Diamond and Carbon-based Materials Research

We have studied friction and dissipation in single and bilayer graphene films grown epitaxially on SiC. The friction on SiC is greatly reduced by a single layer of graphene and reduced by another factor of 2 on bilayer graphene. The friction contrast between single and bilayer graphene arises from a dramatic difference in electron-phonon coupling, which we discovered by means of angle-resolved photoemission spectroscopy. Bilayer graphene as a lubricant outperforms even graphite due to reduced adhesion.