Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/76716

TítuloMe-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-chaveThin-films
Binary intermetallic systems
Ti–Me dry electrodes
Polymers
Electrode–skin impedance
Biopotential measurement
Data6-Dez-2021
EditoraMultidisciplinary Digital Publishing Institute (MDPI)
RevistaSensors
CitaçãoLopes, 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.
TipoArtigo
URIhttps://hdl.handle.net/1822/76716
DOI10.3390/s21238143
ISSN1424-8220
Versão da editorahttps://www.mdpi.com/1424-8220/21/23/8143
Arbitragem científicayes
AcessoAcesso aberto
Aparece nas coleções:BUM - MDPI

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