Highly Elastic Graphene-Based Electronics Toward Electronic Skin

Yong Ju Yun, Jongil Ju, Joong Hoon Lee, Sung Hwan Moon, Soon Jung Park, Young Heon Kim, Won G. Hong, Dong Han Ha, Heeyeong Jang, Geon Hui Lee, Hyung Min Chung, Jonghyun Choi, Sung Woo Nam, Sang Hoon Lee, Yongseok Jun

Research output: Contribution to journalArticlepeer-review

116 Citations (Scopus)


Epidermal electronics are extensively explored as an important platform for future biomedical engineering. Epidermal devices are typically fabricated using high-cost methods employing complex vacuum microfabrication processes, limiting their widespread potential in wearable electronics. Here, a low-cost, solution-based approach using electroconductive reduced graphene oxide (RGO) sheets on elastic and porous poly(dimethylsiloxane) (PDMS) thin films for multifunctional, high-performance, graphene-based epidermal bioelectrodes and strain sensors is presented. These devices are fabricated employing simple coatings and direct patterning without using any complicated microfabrication processes. The graphene bioelectrodes show a superior stretchability (up to 150% strain), with mechanical durability up to 5000 cycles of stretching and releasing, and low sheet resistance (1.5 kΩ per square), and the graphene strain sensors exhibit a high sensitivity (a gauge factor of 7 to 173) with a wide sensing range (up to 40% strain). Fully functional applications of dry bioelectrodes in monitoring human electrophysiological signals (i.e., electrocardiogram, electroencephalography, and electromyogram) and highly sensitive strain sensors for precise detection of large-scale human motions are demonstrated. It is believed that our unique processing capability and multifunctional device platform based on RGO/porous PDMS will pave the way for low-cost processing and integration of 2D materials for future wearable electronic skin.

Original languageEnglish
Article number1701513
JournalAdvanced Functional Materials
Issue number33
Publication statusPublished - 2017 Sept 6


  • bioelectrodes
  • electronic skins
  • reduced graphene oxide
  • solution-based approach
  • strain sensors

ASJC Scopus subject areas

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


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