Ferromagnetic, Folded Electrode Composite as a Soft Interface to the Skin for Long-Term Electrophysiological Recording

Kyung In Jang, Han Na Jung, Jung Woo Lee, Sheng Xu, Yu Hao Liu, Yinji Ma, Jae Woong Jeong, Young Min Song, Jeonghyun Kim, Bong Hoon Kim, Anthony Banks, Jean Won Kwak, Yiyuan Yang, Dawei Shi, Zijun Wei, Xue Feng, Ungyu Paik, Yonggang Huang, Roozbeh Ghaffari, John A. Rogers*

*Corresponding author for this work

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

A class of ferromagnetic, folded, soft composite material for skin-interfaced electrodes with releasable interfaces to stretchable, wireless electronic measurement systems is introduced. These electrodes establish intimate, adhesive contacts to the skin, in dimensionally stable formats compatible with multiple days of continuous operation, with several key advantages over conventional hydrogel-based alternatives. The reported studies focus on aspects ranging from ferromagnetic and mechanical behavior of the materials systems, to electrical properties associated with their skin interface, to system-level integration for advanced electrophysiological monitoring applications. The work combines experimental measurement and theoretical modeling to establish the key design considerations. These concepts have potential uses across a diverse set of skin-integrated electronic technologies.

Original languageEnglish (US)
Pages (from-to)7281-7290
Number of pages10
JournalAdvanced Functional Materials
Volume26
Issue number40
DOIs
StatePublished - Oct 25 2016

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Keywords

  • composite materials
  • dry electrodes
  • electrophysiology
  • equivalent circuit model
  • ferromagnetism
  • finite-element method
  • stretchable electronics

ASJC Scopus subject areas

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

Cite this

Jang, K. I., Jung, H. N., Lee, J. W., Xu, S., Liu, Y. H., Ma, Y., Jeong, J. W., Song, Y. M., Kim, J., Kim, B. H., Banks, A., Kwak, J. W., Yang, Y., Shi, D., Wei, Z., Feng, X., Paik, U., Huang, Y., Ghaffari, R., & Rogers, J. A. (2016). Ferromagnetic, Folded Electrode Composite as a Soft Interface to the Skin for Long-Term Electrophysiological Recording. Advanced Functional Materials, 26(40), 7281-7290. https://doi.org/10.1002/adfm.201603146