Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/65393
Título: | Dry electrodes for surface electromyography based on architectured titanium thin films |
Autor(es): | Rodrigues, Marco S. Fiedler, Patrique Küchler, Nora Domingues, Rui P. Lopes, Cláudia Borges, Joel Haueisen, Jens Vaz, F. |
Palavras-chave: | biopotential electrodes dry electrodes electromyography thin films magnetron sputtering glancing angle deposition |
Data: | 5-Mai-2020 |
Editora: | Multidisciplinary Digital Publishing Institute |
Revista: | Materials |
Citação: | S. Rodrigues, M.; Fiedler, P.; Küchler, N.; P. Domingues, R.; Lopes, C.; Borges, J.; Haueisen, J.; Vaz, F. Dry Electrodes for Surface Electromyography Based on Architectured Titanium Thin Films. Materials 2020, 13, 2135. |
Resumo(s): | Electrodes of silver/silver chloride (Ag/AgCl) are dominant in clinical settings for surface electromyography (sEMG) recordings. These electrodes need a conductive electrolyte gel to ensure proper performance, which dries during long-term measurements inhibiting the immediate electrode’s reuse and is often linked to skin irritation episodes. To overcome these drawbacks, a new type of dry electrodes based on architectured titanium (Ti) thin films were proposed in this work. The architectured microstructures were zigzags, obtained with different sputtering incidence angles (α), which have been shown to directly influence the films’ porosity and electrical conductivity. The electrodes were prepared using thermoplastic polyurethane (TPU) and stainless-steel (SS) substrates, and their performance was tested in male volunteers (athletes) by recording electromyography (EMG) signals, preceded by electrode-skin impedance measurements. In general, the results showed that both SS and TPU dry electrodes can be used for sEMG recordings. While SS electrodes almost match the signal quality parameters of reference electrodes of Ag/AgCl, the performance of electrodes based on TPU functionalized with a Ti thin film still requires further improvements. Noteworthy was the clear increase of the signal to noise ratios when the thin films’ microstructure evolved from normal growth towards zigzag microstructures, meaning that further tailoring of the thin film microstructure is a possible route to achieve optimized performances. Finally, the developed dry electrodes are reusable and allow for multiple EMG recordings without being replaced. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/65393 |
DOI: | 10.3390/ma13092135 |
ISSN: | 1996-1944 |
Versão da editora: | https://www.mdpi.com/1996-1944/13/9/2135 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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materials-13-02135.pdf | 5,82 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons