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    EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

    13–17 Sept 2021 Virtual Conference
    Virtual
    Europe/Vienna timezone
    Thank you very much for your participation!

    Conference Secretary

    Design and fabrication of flexible transparent electrode membranes and self-supporting thin film electrodes for biosignal monitoring

    15 Sept 2021, 16:30
    20m
    Room 2

    Room 2
    Oral Presentation A2. Synthesis and applications of functional materials A2_Synthesis and applications of functional materials

    Speaker

    Prof. Silvia Schintke (Laboratory of Applied NanoSciences (COMATEC-LANS), Institute of Mechanical Design and Materials Technology, Department of Industrial Technologies, HEIG-VD, HES-SO // University of Applied Sciences Western Switzerland (HES-SO))

    Description

    Flexible electrode membranes and thin films are of broad interest for various technological applications including sports, medicine, sensor developments, and environmental signal monitoring. Medical and sports applications concern for example TENS (transcutaneous electrical nerve stimulation) for the stimulation of nerves or ECG (electrocardiography) for health monitoring under movement. An increasing application interest of transparent flexible electrodes is particularly given for long-term use in medical and environmental biosignal monitoring.

    In this study we have designed and fabricated transparent flexible nanocomposite electrodes for biosignal monitoring. We present our recent results on transparent flexible electrodes based on polyvinylidene fluoride (PVDF) and silver nanowires (AgNW). Flexible conducting AgNW-PVDF nanocomposite membranes and thin films were produced using spin-coating, blade coating and electrospinning. The obtained electrode materials were studied using electrical four-point probing, optical microscopy, optical spectroscopy (UV-vis-NIR), and atomic force microscopy (AFM). Furthermore, stability tests under bending, stretching, and exposure to water as well as to further test liquids were performed.

    The results are discussed as a function of the silver nanowire load, as well as for the different materials processing techniques. We compare different underlying material formulation and processing strategies and discuss mechanical, optical, and electrical properties of the nanocomposite materials for different design concepts and material architectures of the electrodes in the light of biosignal sensor applications, as well as their optimization and device fabrication.

    Finally, we present recent results from biosignal detection and monitoring as obtained with our flexible electrodes and gel-free signal detection. The results show, that our transparent flexible nanocomposite electrode devices allow for virtually invisible long-term biosignal monitoring.

    This work has been financially supported by innosuisse (project SIENA, grant number 42751.1 IP-EE), and HES-SO (projects PRONANO (81265/IA-EXT17-57), PROINDAV (900668/UA-EXT18-23), and P3.2-SIENA (107566/IA-EXT20-28)).

    Speaker Country Switzerland

    Authors

    Dr Lilia Castro Nicolli (Laboratory of Applied NanoSciences (COMATEC-LANS), Institute of Mechanical Design and Materials Technology, Department of Industrial Technologies, HEIG-VD, HES-SO // University of Applied Sciences Western Switzerland (HES-SO)) Prof. Silvia Schintke (Laboratory of Applied NanoSciences (COMATEC-LANS), Institute of Mechanical Design and Materials Technology, Department of Industrial Technologies, HEIG-VD, HES-SO // University of Applied Sciences Western Switzerland (HES-SO))

    Co-authors

    Ms Chahrazad Benbalit (1. Laboratory of Applied NanoSciences (COMATEC-LANS), Institute of Mechanical Design and Materials Technology, Department of Industrial Technologies, HEIG-VD, HES-SO // University of Applied Sciences Western Switzerland (HES-SO), 2. Institut UTINAM, UMR 6213 CNRS-UBFC, Université de Bourgogne Franche-Comté (UBFC)) Ms Eleonora Frau (Laboratory of Applied NanoSciences, Institute of Mechanical Design and Materials Technology, Department of Industrial Technologies, HEIG-VD, HES-SO // University of Applied Sciences Western Switzerland (HES-SO)) Dr Andrzej Kurenda (Vivent SA) Mrs Carrol Plummer (Vivent SA) Dr Daniel Tran (Agroscope)

    Presentation materials

    Présentation_EUROMAT2021_Schintke_AgNWs-PVDF_2021-09-15final.pdf