Mechanical and environmental stability of polymer thin-film-coated graphene

Chao Yan, Kwang Seop Kim, Seoung Ki Lee, Sang Hoon Bae, Byung Hee Hong, Jae Hyun Kim, Hak Joo Lee, Jong Hyun Ahn

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


A uniform polymer thin layer of controllable thickness was bar-coated onto a chemical vapor deposition (CVD) grown monolayer graphene surface. The effects of this coating layer on the optical, electric, and tribological properties were then investigated. The thin polymer coating layer did not reduce the optical transmittance of the graphene films. The variation in the sheet resistance of the graphene films after the coating depended on the interaction between polymer and graphene. The top coating layer can maintain the high conductivity of chemical doped graphene films under long-term ambient conditions compared with uncovered doped samples. Friction tests demonstrated that the polymer coating layer can enhance both the friction force and the coefficient of friction of the graphene films and protect the graphene against damage in the repeated sliding processes.

Original languageEnglish
Pages (from-to)2096-2103
Number of pages8
JournalACS Nano
Issue number3
Publication statusPublished - 2012 Mar 27

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)


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