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Fused deposition modelling – Towards 3D printed electrodes on fabric for surface electromyography (sEMG)
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-6995-967X
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-4369-9304
2018 (English)Conference paper, Poster (with or without abstract) (Other academic)
Sustainable development
According to the author(s), the content of this publication falls within the area of sustainable development.
Abstract [en]

Surface electromyography (sEMG) monitoring has promising applications within the field of human robot communication where wearable electrodes are used as the interface. This research investigates the production of flexible 3D printed electrodes using electrically conductive filaments, of thermoplastic polyurethane containing carbon black, and polyester fabric as substrate. Dry 3D printed electrodes of varying thickness, due to increased number of layers, were compared to conventional electrolytic gel electrodes. Initial tests show that the volume resistivity of 3D printed electrodes increased with increased number of layers. This because, with increased number of layers the diffusion between layers deteriorates and hinders conductive particle connections. Additional heat-treatments using hot press plates to improve diffusion between layers were promising as volume resistivity decreased with 200 % for all samples. As a first step to evaluate the 3D printed electrodes, skin-electrode impedance measurements were performed, and compared with measurements of conventional electrodes. Results showed that resistance and reactance versus frequency curves had similar trending slopes, decreasing with increasing frequency. However, this corresponded only between the thinnest (200 μm) 3D-printed dry electrode having a volume resistivity of 6.2 Ω cm and the conventional gel electrode. Future studies regarding the influence of platform and extruder temperature are planned for, focusing on improved diffusion between layers and increased conduction for proper electron transfer. 

Place, publisher, year, edition, pages
2018.
Keywords [en]
3D printing, electrodes, conductive filament, fabric, diffusion, printing parameters, surface electromyography
National Category
Textile, Rubber and Polymeric Materials Composite Science and Engineering
Research subject
Textiles and Fashion (General)
Identifiers
URN: urn:nbn:se:hb:diva-15187OAI: oai:DiVA.org:hb-15187DiVA, id: diva2:1254219
Conference
IDTechEx, Berlin, 11-12 April, 2018.
Funder
Region Västra Götaland, 2016-01342Available from: 2018-10-08 Created: 2018-10-08 Last updated: 2018-11-20Bibliographically approved

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Malm, VeronicaSeoane, FernandoNierstrasz, Vincent

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