Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/76716
Título: | Me-Doped Ti–Me intermetallic thin films used for dry biopotential electrodes: a comparative case study |
Autor(es): | Lopes, Cláudia Jesus Ribeiro Fiedler, Patrique Rodrigues, Marco S. Borges, Joel Bertollo, Maurizio Alves, Eduardo Barradas, Nuno Pessoa Comani, Silvia Haueisen, Jens Vaz, F. |
Palavras-chave: | Thin-films Binary intermetallic systems Ti–Me dry electrodes Polymers Electrode–skin impedance Biopotential measurement |
Data: | 6-Dez-2021 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Sensors |
Citação: | Lopes, C.; Fiedler, P.; Rodrigues, M.S.; Borges, J.; Bertollo, M.; Alves, E.; Barradas, N.P.; Comani, S.; Haueisen, J.; Vaz, F. Me-Doped Ti–Me Intermetallic Thin Films Used for Dry Biopotential Electrodes: A Comparative Case Study. Sensors 2021, 21, 8143. https://doi.org/10.3390/s21238143 |
Resumo(s): | In a new era for digital health, dry electrodes for biopotential measurement enable the monitoring of essential vital functions outside of specialized healthcare centers. In this paper, a new type of nanostructured titanium-based thin film is proposed, revealing improved biopotential sensing performance and overcoming several of the limitations of conventional gel-based electrodes such as reusability, durability, biocompatibility, and comfort. The thin films were deposited on stainless steel (SS) discs and polyurethane (PU) substrates to be used as dry electrodes, for non-invasive monitoring of body surface biopotentials. Four different Ti–Me (Me = Al, Cu, Ag, or Au) metallic binary systems were prepared by magnetron sputtering. The morphology of the resulting Ti–Me systems was found to be dependent on the chemical composition of the films, specifically on the type and amount of Me. The existence of crystalline intermetallic phases or glassy amorphous structures also revealed a strong influence on the morphological features developed by the different systems. The electrodes were tested in an in-vivo study on 20 volunteers during sports activity, allowing study of the application-specific characteristics of the dry electrodes, based on Ti–Me intermetallic thin films, and evaluation of the impact of the electrode–skin impedance on biopotential sensing. The electrode–skin impedance results support the reusability and the high degree of reliability of the Ti–Me dry electrodes. The Ti–Al films revealed the least performance as biopotential electrodes, while the Ti–Au system provided excellent results very close to the Ag/AgCl reference electrodes. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/76716 |
DOI: | 10.3390/s21238143 |
ISSN: | 1424-8220 |
Versão da editora: | https://www.mdpi.com/1424-8220/21/23/8143 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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sensors-21-08143.pdf | 3,13 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons