Conducting Polymer-Ionic Liquid Electrode Arrays for High-Density Surface Electromyography

Santiago Velasco-Bosom, Nuzli Karam, Alejandro Carnicer-Lombarte, Johannes Gurke, Nerea Casado, Liliana C. Tomé, David Mecerreyes, George G. Malliaras

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)
1 Downloads (Pure)

Abstract

Surface electromyography (EMG) is used as a medical diagnostic and to control prosthetic limbs. Electrode arrays that provide large-area, high density recordings have the potential to yield significant improvements in both fronts, but the need remains largely unfulfilled. Here, digital fabrication techniques are used to make scalable electrode arrays that capture EMG signals with mm spatial resolution. Using electrodes made of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) composites with the biocompatible ionic liquid (IL) cholinium lactate, the arrays enable high quality spatiotemporal recordings from the forearm of volunteers. These recordings allow to identify the motions of the index, little, and middle fingers, and to directly visualize the propagation of polarization/depolarization waves in the underlying muscles. This work paves the way for scalable fabrication of cutaneous electrophysiology arrays for personalized medicine and highly articulate prostheses.

Original languageEnglish
Article number2100374
JournalAdvanced Healthcare Materials
Volume10
Issue number17(SI)
DOIs
Publication statusPublished - 8 Sep 2021

Keywords

  • cutaneous electrophysiology
  • electromyography
  • organic bioelectronics
  • poly(3,4-ethylenedioxythiophene) polystyrene sulfonate

Fingerprint

Dive into the research topics of 'Conducting Polymer-Ionic Liquid Electrode Arrays for High-Density Surface Electromyography'. Together they form a unique fingerprint.

Cite this