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

doi:10.1021/nn203923n

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

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2096-2103
Number of pages	8
Journal	ACS Nano
Volume	6
Issue number	3
DOIs	https://doi.org/10.1021/nn203923n
Publication status	Published - 2012 Mar 27

All Science Journal Classification (ASJC) codes

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

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10.1021/nn203923n

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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.",

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T1 - Mechanical and environmental stability of polymer thin-film-coated graphene

AU - Yan, Chao

AU - Kim, Kwang Seop

AU - Lee, Seoung Ki

AU - Bae, Sang Hoon

AU - Hong, Byung Hee

AU - Kim, Jae Hyun

AU - Lee, Hak Joo

AU - Ahn, Jong Hyun

PY - 2012/3/27

Y1 - 2012/3/27

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AB - 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.

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

Abstract

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