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Investigating the nano-tribological properties of chemical vapor deposition-grown single layer graphene on SiO2 substrates annealed in ambient air
Q.; Bai Wang, B.; Li, Y.; Jiang, Y.; Ma, L. P.; Ren, N. F.
2015
Source PublicationRsc Advances
ISSN2046-2069
Volume5Issue:13Pages:10058-10064
AbstractNano-tribological properties of graphene have attracted a lot of research interest in the last few years. In this work, X-ray photoelectron spectroscopy was used to study the distribution of chemical groups in chemical vapor deposition (CVD) of single layer graphene transferred onto a 90 nm SiO2/Si substrate. It was demonstrated that the graphene was oxidized after thermal treatment at 520 degrees C in ambient air, as indicated by the formation of C = O and C-OH bonds. Significantly enhanced D-band and decreased 2D-band were found in the Raman spectrum. Blue shift occurred for the G-band and 2D-band after thermal oxidation. The nano-tribological properties of graphene before and after thermal oxidation were studied with atomic force microscopy. A remarkable increase of friction was found on the surface of graphene after thermal oxidation. This was contributed to by the increased adhesion and decreased Young's modulus of the functionalized graphene, inducing the increase of contact stiffness. In addition, the adhesion force between the tip and the samples was discussed as an important factor affecting tribological properties on the nano-scale.
description.department[wang, quan ; bai, bing ; li, yun ; ren, naifei] jiangsu univ, sch mech engn, zhenjiang 212013, peoples r china. [wang, quan] chinese acad sci, state key lab transducer technol, shanghai 200050, peoples r china. [jiang, yan] jiangsu univ, sch mat sci & engn, zhenjiang 212013, peoples r china. [ma, laipeng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; wang, q (reprint author), jiangsu univ, sch mech engn, zhenjiang 212013, peoples r china. ; wangq@mail.ujs.edu.cn
KeywordMonolayer Graphene Raman-spectroscopy Elastic Properties Friction Nanoscale Graphite Sheets Films Oxide
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73955
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Q.,Bai Wang, B.,Li, Y.,et al. Investigating the nano-tribological properties of chemical vapor deposition-grown single layer graphene on SiO2 substrates annealed in ambient air[J]. Rsc Advances,2015,5(13):10058-10064.
APA Q.,Bai Wang, B.,Li, Y.,Jiang, Y.,Ma, L. P.,&Ren, N. F..(2015).Investigating the nano-tribological properties of chemical vapor deposition-grown single layer graphene on SiO2 substrates annealed in ambient air.Rsc Advances,5(13),10058-10064.
MLA Q.,et al."Investigating the nano-tribological properties of chemical vapor deposition-grown single layer graphene on SiO2 substrates annealed in ambient air".Rsc Advances 5.13(2015):10058-10064.
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