Influence of Material Properties on the Performance of Highly Stretchable Pneumatic Strain Gauges

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    Abstract

    A meandering microfluidic channel in a soft elastomeric material works as a pneumatic strain gauge. The channel deforms under external forces, changing its fluidic resistance. This fluidic resistance can be measured by measuring pressure drop over the channel. We made strain gauges by casting four different elastomers of varying stiffness (Sylgard 184, Dragon Skin 30, Ecoflex 00-50 and Ecoflex 00-30) into microfabricated molds. Here we report the effects of material choice on the performance of the sensor under strain and compression. The sensors fabricated from stiffer elastomers proved effective in detecting smaller strains and higher compressive forces, while softer sensors were more suitable for larger strains and smaller compressive forces.

    Original languageEnglish
    Title of host publication2023 IEEE SENSORS, SENSORS 2023 - Conference Proceedings
    PublisherIEEE
    ISBN (Electronic)979-8-3503-0387-2
    DOIs
    Publication statusPublished - 2023
    Publication typeA4 Article in conference proceedings
    EventIEEE SENSORS - Vienna, Austria
    Duration: 29 Oct 20231 Nov 2023

    Publication series

    NameProceedings of IEEE Sensors
    ISSN (Print)1930-0395
    ISSN (Electronic)2168-9229

    Conference

    ConferenceIEEE SENSORS
    Country/TerritoryAustria
    CityVienna
    Period29/10/231/11/23

    Keywords

    • silicone elastomers
    • soft devices
    • soft strain sensor

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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