Tuning micro-wrinkled graphene films for stretchable conductors of controllable electrical conductivity

Feng, Chunfang, Yi, Zhifeng, Dumee, Ludovic F., She, Fenghua, Peng, Zheng, Gao, Weimin and Kong, Lingxue 2018, Tuning micro-wrinkled graphene films for stretchable conductors of controllable electrical conductivity, Carbon, vol. 139, pp. 672-679, doi: 10.1016/j.carbon.2018.07.016.

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Title Tuning micro-wrinkled graphene films for stretchable conductors of controllable electrical conductivity
Author(s) Feng, Chunfang
Yi, ZhifengORCID iD for Yi, Zhifeng orcid.org/0000-0001-8987-9514
Dumee, Ludovic F.ORCID iD for Dumee, Ludovic F. orcid.org/0000-0002-0264-4024
She, FenghuaORCID iD for She, Fenghua orcid.org/0000-0001-8191-0820
Peng, Zheng
Gao, WeiminORCID iD for Gao, Weimin orcid.org/0000-0002-7390-169X
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Journal name Carbon
Volume number 139
Start page 672
End page 679
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2018-11
ISSN 0008-6223
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Physical
Materials Science, Multidisciplinary
Materials Science
Summary © 2018 Elsevier Ltd Accurately controlling the electrical conductivity of wrinkled graphene or graphene oxide (GO) structures is challenging due to the complex sheet-to-sheet interactions and hierarchical interactions at the nanoscale. In this paper, wrinkled GO films with predictable electrical conductivity by precisely controlling thickness ranging from 0.69 to 1.68 μm were fabricated with a thermal process where a GO-coated polystyrene shrink film was isotropically shrunk. Theoretical and experimental results show consistent dependence of the wrinkle wavelength on the GO film thickness. Beyond a certain thickness threshold, poorly wrinkled structures were formed as GO sheets started delaminating from the shrink films. A coarse-grain molecule model based on molecular dynamic simulation principles was developed to understand the formation of the wrinkles, and establish a relationship between GO thickness and the wrinkle wavelength generated. The electrical resistance was found to decrease when the thickness of the GO films increases. The formed composite film can maintain a stable electrical conductivity after experiencing up to 1000 stretching-release cycles under 10% strain. With controllable electrical conductivity, the reported composites can offer potential applications as a strain sensor with tuneable sensing range and high durability.
Language eng
DOI 10.1016/j.carbon.2018.07.016
Field of Research 03 Chemical Sciences
02 Physical Sciences
09 Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2018, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30112035

Document type: Journal Article
Collections: Institute for Frontier Materials
GTP Research
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