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Mechanical and Environmental Stability of Polymer Thin-Film-Coated Graphene

Cited 48 time in Web of Science Cited 51 time in Scopus
Authors
Yan, Chao; Kim, Kwang-Seop; Lee, Seoung-Ki; Bae, Sang-Hoon; Hong, Byung Hee; Kim, Jae-Hyun; Lee, Hak-Joo; Ahn, Jong-Hyun
Issue Date
2012-03
Citation
ACS Nano, Vol.6 No.3, pp.2096-2103
Keywords
CVD-grown grapheneencapsulationbar coatingpolymer thin filmsheet resistancefriction
Abstract
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.
ISSN
1936-0851
URI
https://hdl.handle.net/10371/172133
DOI
https://doi.org/10.1021/nn203923n
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College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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