Friction and wear characteristics of multi-layer graphene films investigated by atomic force microscopy

Li Yu Lin, Dae Eun Kim, Whan Kyun Kim, Seong Chan Jun

Research output: Contribution to journalArticlepeer-review

137 Citations (Scopus)

Abstract

Friction and wear characteristics of multi-layer graphene films deposited on a Si substrate by mechanical exfoliation were investigated by atomic force microscopy (AFM). The graphene films consisted of a few layers of carbon basal plane. The number of graphene layers was determined by AFM and Raman spectroscopy. For the AFM friction measurement, loads in the range of -5 to 30. nN were applied on the Si tip that slid against the graphene specimen. It was found that graphene films exhibited much lower friction (from 0.36 to 0.62. nN) than bare Si surface (from 1.1 to 4.3. nN) when the applied loads ranged from 3 to 30. nN. The wear characteristics were also assessed using the AFM. Detectable wear of graphene was generated when sliding was performed for 100. cycles under 5 μN applied load. The wear mechanism of graphene was proposed to be due to breakage of in-plane bonds between carbon atoms and shearing at the interface of graphene layers.

Original languageEnglish
Pages (from-to)4864-4869
Number of pages6
JournalSurface and Coatings Technology
Volume205
Issue number20
DOIs
Publication statusPublished - 2011 Jul 15

Bibliographical note

Funding Information:
This CRI work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2010-0018289 ).

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Friction and wear characteristics of multi-layer graphene films investigated by atomic force microscopy'. Together they form a unique fingerprint.

Cite this