Self-healing reduced graphene oxide films by supersonic kinetic spraying

Do Yeon Kim, Suman Sinha-Ray, Jung Jae Park, Jong Gun Lee, You Hong Cha, Sang Hoon Bae, Jong-Hyun Ahn, Yong Chae Jung, Soo Min Kim, Alexander L. Yarin, Sam S. Yoon

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

The industrial scale application of graphene and other functional materials in the field of electronics has been limited by inherent defects, and the lack of simple deposition methods. A simple spray deposition method is developed that uses a supersonic air jet for a commercially available reduced graphene oxide (r-GO) suspension. The r-GO flakes are used as received, which are pre-annealed and pre-hydrazine-treated, and do not undergo any post-treatment. A part of the considerable kinetic energy of the r-GO flakes entrained by the supersonic jet is used in stretching the flakes upon impact with the substrate. The resulting "frozen elastic strains" heal the defects (topological defects, namely Stone-Wales defect and C2 vacancies) in the r-GO flakes, which is reflected in the reduced ratio of the intensities of the D and G bands in the deposited film. The defects can also be regenerated by annealing.

Original languageEnglish
Pages (from-to)4986-4995
Number of pages10
JournalAdvanced Functional Materials
Volume24
Issue number31
DOIs
Publication statusPublished - 2014 Aug 20

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spraying
healing
Spraying
Graphene
Oxide films
flakes
oxide films
graphene
Oxides
Defects
Kinetics
defects
kinetics
hydrazine
oxides
air jets
Wales
Functional materials
Hydrazine

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kim, D. Y., Sinha-Ray, S., Park, J. J., Lee, J. G., Cha, Y. H., Bae, S. H., ... Yoon, S. S. (2014). Self-healing reduced graphene oxide films by supersonic kinetic spraying. Advanced Functional Materials, 24(31), 4986-4995. https://doi.org/10.1002/adfm.201400732
Kim, Do Yeon ; Sinha-Ray, Suman ; Park, Jung Jae ; Lee, Jong Gun ; Cha, You Hong ; Bae, Sang Hoon ; Ahn, Jong-Hyun ; Jung, Yong Chae ; Kim, Soo Min ; Yarin, Alexander L. ; Yoon, Sam S. / Self-healing reduced graphene oxide films by supersonic kinetic spraying. In: Advanced Functional Materials. 2014 ; Vol. 24, No. 31. pp. 4986-4995.
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Kim, DY, Sinha-Ray, S, Park, JJ, Lee, JG, Cha, YH, Bae, SH, Ahn, J-H, Jung, YC, Kim, SM, Yarin, AL & Yoon, SS 2014, 'Self-healing reduced graphene oxide films by supersonic kinetic spraying', Advanced Functional Materials, vol. 24, no. 31, pp. 4986-4995. https://doi.org/10.1002/adfm.201400732

Self-healing reduced graphene oxide films by supersonic kinetic spraying. / Kim, Do Yeon; Sinha-Ray, Suman; Park, Jung Jae; Lee, Jong Gun; Cha, You Hong; Bae, Sang Hoon; Ahn, Jong-Hyun; Jung, Yong Chae; Kim, Soo Min; Yarin, Alexander L.; Yoon, Sam S.

In: Advanced Functional Materials, Vol. 24, No. 31, 20.08.2014, p. 4986-4995.

Research output: Contribution to journalArticle

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Kim DY, Sinha-Ray S, Park JJ, Lee JG, Cha YH, Bae SH et al. Self-healing reduced graphene oxide films by supersonic kinetic spraying. Advanced Functional Materials. 2014 Aug 20;24(31):4986-4995. https://doi.org/10.1002/adfm.201400732