Stable, Highly Conductive, and Strain-Insensitive Supramolecular Elastomer Composite for Printable Self-Healing Soft Electronics
Albeltagi, Ahmed; Tyystälä, Tiia; Nelo, Mikko; Siponkoski, Tuomo; da Silva, Aldeliane M.; Rocham, Mari; Hannu, Jari; Jantunen, Heli; Juuti, Jari; Tolvanen, Jarkko (2025-06-25)
Wiley-VCH Verlag
25.06.2025
A. Albeltagi, T. Tyystälä, M. Nelo, T. Siponkoski, A. M. da Silva, M. Rocham, J. Hannu, H. Jantunen, J. Juuti, J. Tolvanen, Stable, Highly Conductive, and Strain-Insensitive Supramolecular Elastomer Composite for Printable Self-Healing Soft Electronics. Adv. Sci. 2025, e05011. https://doi.org/10.1002/advs.202505011
https://creativecommons.org/licenses/by/4.0/
© 2025 The Author(s). Advanced Science published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
© 2025 The Author(s). Advanced Science published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
https://creativecommons.org/licenses/by/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202506264975
https://urn.fi/URN:NBN:fi:oulu-202506264975
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Abstract
Stretchable and self-healing soft conductive materials are essential for soft electronics, robotics, wearables, and bioelectronics. However, achieving a single material that simultaneously offers high and stable conductivity, minimal resistance changes under extreme stretching, high-resolution universal printability, autonomous self-healing, and pressure-sensitive adhesive properties for direct bonding of surface-mountable components remains challenging. Here, a printable ink composed of liquid metal microparticles and carboxylic acid-functionalized carbon nanotubes, blended into a bimodal supramolecular elastomer matrix is introduced. After photothermal activation, the material is capable of reorganizing conductive pathways and achieves a high conductivity (> 20000 S·cm−1 under strain), exceptional strain insensitivity (R/R0 < 3.95 up to 500%), and an elastic working range >700%. The reversible oxygen-boron and hydrogen bonding enable both effective autonomous self-healing and direct assembly of self-healing hybrid electronic circuits and systems through self-adhesiveness. To showcase the high performance and functionality, a highly stretchable, self-healing, and waterproof 3 × 5 pixel display is fabricated.
Stretchable and self-healing soft conductive materials are essential for soft electronics, robotics, wearables, and bioelectronics. However, achieving a single material that simultaneously offers high and stable conductivity, minimal resistance changes under extreme stretching, high-resolution universal printability, autonomous self-healing, and pressure-sensitive adhesive properties for direct bonding of surface-mountable components remains challenging. Here, a printable ink composed of liquid metal microparticles and carboxylic acid-functionalized carbon nanotubes, blended into a bimodal supramolecular elastomer matrix is introduced. After photothermal activation, the material is capable of reorganizing conductive pathways and achieves a high conductivity (> 20000 S·cm−1 under strain), exceptional strain insensitivity (R/R0 < 3.95 up to 500%), and an elastic working range >700%. The reversible oxygen-boron and hydrogen bonding enable both effective autonomous self-healing and direct assembly of self-healing hybrid electronic circuits and systems through self-adhesiveness. To showcase the high performance and functionality, a highly stretchable, self-healing, and waterproof 3 × 5 pixel display is fabricated.
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