Biocompatible and Flexible Transparent Electrodes for Skin-Inspired Sensing

Engineering Proceedings

article

Raquel L. Pereira¹  Gabriela V. Martins¹ 

[1] School of Engineering, Polytechnique School of Porto;Centre of Biological Engineering ,(CEB), University of Minho;LABBELS—Associate Laboratory

关键词: chitosan;    membrane;    transparent;    silver nanowires;    flexible;    electrochemical;   

DOI  :  10.3390/IECB2023-14588

来源: mdpi

【 摘 要 】

In recent years, flexible electronics have experienced a massive growth as a response to the high demand for new skin-patch sensor devices targeted at personal health-monitoring. In this context, the incorporation of biopolymers into the backbone of these soft systems brings new opportunities in terms of biocompatibility and sustainability performance. However, the suitable integration of a conductive patterned material is still a challenge, in order to achieve good adhesion and high transparency. Thus, silver nanowires (AgNWs) constitute promising candidates for the fabrication of flexible transparent conductive films. Herein, a chitosan membrane doped with a plasticizer element was made conductive, through a one-step process, by using an optimized ratio of chitosan–lactic acid–AgNWs (Chi-LaA-AgNWs) dispersion. This formulation was applied using screen-printing, and the influence of the polymer ratio, cure temperature, and number of layers applied with the AgNW-based ink was investigated. Compared with conventional water-based AgNW dispersions, the here-proposed chitosan-doped ink enabled the fabrication of transparent electrode platforms holding good stability, homogeneity, and electrical features.

【 授权许可】

Unknown