Graphene-based conformal devices

Yong Ju Park, Seoung Ki Lee, Min Seok Kim, Hyunmin Kim, Jong Hyun Ahn

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Despite recent progress in bendable and stretchable thin-film transistors using novel designs and materials, the development of conformal devices remains limited by the insufficient flexibility of devices. Here, we demonstrate the fabrication of graphene-based conformal and stretchable devices such as transistor and tactile sensor on a substrate with a convoluted surface by scaling down the device thickness. The 70 nm thick graphene-based conformal devices displayed a much lower bending stiffness than reported previously. The demonstrated devices provided excellent conformal coverage over an uneven animal hide surface without the need for an adhesive. In addition, the ultrathin graphene devices formed on the three-dimensionally curved animal hide exhibited stable electrical characteristics, even under repetitive bending and twisting. The advanced performance and flexibility demonstrated here show promise for the development and adoption of wearable electronics in a wide range of future applications.

Original languageEnglish
Pages (from-to)7655-7662
Number of pages8
JournalACS Nano
Volume8
Issue number8
DOIs
Publication statusPublished - 2014 Jan 1

All Science Journal Classification (ASJC) codes

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

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    Park, Y. J., Lee, S. K., Kim, M. S., Kim, H., & Ahn, J. H. (2014). Graphene-based conformal devices. ACS Nano, 8(8), 7655-7662. https://doi.org/10.1021/nn503446f