A Flexible and Adhesive Strain Sensor Based on Deep Eutectic Solvents for Deep Learning-Assisted Signal Recognition (2025)

    Applications of Polymer, Composite, and Coating Materials

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    ACS Applied Materials & Interfaces

    Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX

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    https://pubs.acs.org/doi/10.1021/acsami.4c20392

    Published April 24, 2025

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    A Flexible and Adhesive Strain Sensor Based on Deep Eutectic Solvents for Deep Learning-Assisted Signal Recognition (3)

    Flexible wearable electronic devices have garnered significant interest due to their inherent properties, serving as replacements for traditional rigid metal conductors in personal healthcare monitoring, human motion detection, and sensory skin applications. Here, we report a preparation strategy for a self-adhesive, ultrahigh stretchable DGel based on poly(acrylic acid) (PAA). The resulting DGel exhibits a high tensile strength (approximately 2.16 MPa) and an ultrahigh stretchability (approximately 5622.14%). More importantly, these meticulously designed DES gels demonstrate high signal recognition capabilities under strains ranging from 1 to 500%. DGel also shows excellent cyclic stability and durability (5000 cycles at 100% strain), exhibiting a superior electromechanical performance as a strain sensor. The ultrahigh strength of DGel is attributed to the synergistic effects of chemical and physical cross-linking within the gel. Additionally, DGel can be effortlessly assembled into wearable sensors. By integration of flexible sensing with deep learning, the fabricated touch recognition system achieves an identification accuracy of up to 99.33%. This advancement offers new insights into designing novel gels for a variety of applications, including tissue engineering, sensing, and wearable electronic devices.

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    © 2025 American Chemical Society

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    • Electrical conductivity
    • Hydrogels
    • Plastics
    • Polymers
    • Sensors

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    ACS Applied Materials & Interfaces

    Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX

    Click to copy citationCitation copied!

    Published April 24, 2025

    Publication History

    • Received

    • Accepted

    • Revised

    • Published

      online

    © 2025 American Chemical Society

    Request reuse permissions

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