An Epidermal Stimulation and Sensing Platform for Sensorimotor Prosthetic Control, Management of Lower Back Exertion, and Electrical Muscle Activation

Baoxing Xu, Aadeel Akhtar, Yuhao Liu, Hang Chen, Woon Hong Yeo, Sung Park, Brandon Boyce, Hyunjin Kim, Jiwoo Yu, Hsin Yen Lai, Sungyoung Jung, Yuhao Zhou, Jeonghyun Kim, Seongkyu Cho, Yonggang Huang, Timothy Bretl, John A. Rogers*

*Corresponding author for this work

Research output: Contribution to journalArticle

87 Scopus citations

Abstract

An epidermal stimulation and sensing platform is demonstrated where multiple transcutaneous electrical stimulation electrodes cointegrate on a common substrate with sensors for electromyography, temperature, and mechanical strain. The layout includes electrodes for electrotactile stimulation and measurement of EMG signals, temperature, and strain. The temperature sensor consists of a serpentine conductive trace (Cr/Au) with a width of 20 μm, thickness of 200 nm, and total length of 26 mm in which the temperature coefficient of resistance in the Au serpentine traces provides the basis for the measurement. The EMG sensor uses the same metal, patterned in a different geometry, for reference, measurement and ground electrodes that each consist of 20 μm wide circular concentric rings in an interwoven serpentine morphology to allow mechanical stretchability, and with a spacing of ?10 mm to optimize signal quality. The EMG and stimulation electrodes remain exposed to the skin. All sensors connect to peripheral contact pads that allow interfaces to external power supplies and data acquisition hardware. The stimulation electrodes provide an important functional capability.

Original languageEnglish (US)
Pages (from-to)4462-4471
Number of pages10
JournalAdvanced Materials
Volume28
Issue number22
DOIs
StatePublished - Jan 1 2016

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Keywords

  • electromyography, sensorimotor control
  • electrostimulation
  • epidermal sensors
  • ultrathin electronics

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Xu, B., Akhtar, A., Liu, Y., Chen, H., Yeo, W. H., Park, S., Boyce, B., Kim, H., Yu, J., Lai, H. Y., Jung, S., Zhou, Y., Kim, J., Cho, S., Huang, Y., Bretl, T., & Rogers, J. A. (2016). An Epidermal Stimulation and Sensing Platform for Sensorimotor Prosthetic Control, Management of Lower Back Exertion, and Electrical Muscle Activation. Advanced Materials, 28(22), 4462-4471. https://doi.org/10.1002/adma.201504155