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Flash healing of laser-induced graphene.
Cheng, Le; Yeung, Chi Shun; Huang, Libei; Ye, Ge; Yan, Jie; Li, Wanpeng; Yiu, Chunki; Chen, Fu-Rong; Shen, Hanchen; Tang, Ben Zhong; Ren, Yang; Yu, Xinge; Ye, Ruquan.
Affiliation
  • Cheng L; Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Yeung CS; City University of Hong Kong Research Institute, Shenzhen, Guangdong, 518057, P. R. China.
  • Huang L; Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Ye G; City University of Hong Kong Research Institute, Shenzhen, Guangdong, 518057, P. R. China.
  • Yan J; Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Li W; Division of Science, Engineering and Health Study, School of Professional Education and Executive Development (PolyU SPEED), The Hong Kong Polytechnic University, Hong Kong, 999077, P. R. China.
  • Yiu C; Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Chen FR; Department of Materials Science and Engineering, Time-resolved Aberration Corrected Environmental Electron Microscope Unit, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Shen H; Department of Materials Science and Engineering, Time-resolved Aberration Corrected Environmental Electron Microscope Unit, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Tang BZ; Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Ren Y; Department of Materials Science and Engineering, Time-resolved Aberration Corrected Environmental Electron Microscope Unit, City University of Hong Kong, Hong Kong, 999077, P. R. China.
  • Yu X; School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong, 518172, P. R. China.
  • Ye R; School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong, 518172, P. R. China.
Nat Commun ; 15(1): 2925, 2024 Apr 04.
Article in En | MEDLINE | ID: mdl-38575649
ABSTRACT
The advancement of laser-induced graphene (LIG) technology has streamlined the fabrications of flexible graphene devices. However, the ultrafast kinetics triggered by laser irradiation generates intrinsic amorphous characteristics, leading to high resistivity and compromised performance in electronic devices. Healing graphene defects in specific patterns is technologically challenging by conventional methods. Herein, we report the rapid rectification of LIG's topological defects by flash Joule heating in milliseconds (referred to as F-LIG), whilst preserving its overall structure and porosity. The F-LIG exhibits a decreased ID/IG ratio from 0.84 - 0.33 and increased crystalline domain from Raman analysis, coupled with a 5-fold surge in conductivity. Pair distribution function and atomic-resolution imaging delineate a broader-range order of F-LIG with a shorter C-C bond of 1.425 Å. The improved crystallinity and conductivity of F-LIG with excellent flexibility enables its utilization in high-performance soft electronics and low-voltage disinfections. Notably, our F-LIG/polydimethylsiloxane strain sensor exhibits a gauge factor of 129.3 within 10% strain, which outperforms pristine LIG by 800%, showcasing significant potential for human-machine interfaces.

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nat Commun Journal subject: BIOLOGIA / CIENCIA Year: 2024 Document type: Article Country of publication: Reino Unido

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nat Commun Journal subject: BIOLOGIA / CIENCIA Year: 2024 Document type: Article Country of publication: Reino Unido