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

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Velasco-Bosom, Santiago 
Karam, Nuzli 
Carnicer-Lombarte, Alejandro 
Gurke, Johannes 
Casado, Nerea 

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.

Description

Keywords

cutaneous electrophysiology, electromyography, organic bioelectronics, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, Electrodes, Electromyography, Forearm, Humans, Ionic Liquids, Polymers

Journal Title

Adv Healthc Mater

Conference Name

Journal ISSN

2192-2640
2192-2659

Volume Title

10

Publisher

Wiley

Rights

All rights reserved
Sponsorship
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (823989)