A One-Step Method of Hydrogel Modification by Single-Walled Carbon Nanotubes for Highly Stretchable and Transparent Electronics

Evgenia P. Gilshteyn, Shaoting Lin, Vladislav A. Kondrashov, Daria S. Kopylova, Alexey P. Tsapenko, Anton S. Anisimov, A. John Hart, Xuanhe Zhao, Albert G. Nasibulin

    Research output: Contribution to journalArticlepeer-review

    62 Citations (Scopus)

    Abstract

    Electrically conductive hydrogels (ECHs) are attracting much interest in the field of biomaterials science because of their unique properties. However, effective incorporation and dispersion of conductive materials in the matrices of polymeric hydrogels for improved conductivity remains a great challenge. Here, we demonstrate highly transparent, electrically conductive, stretchable tough hydrogels modified by single-walled carbon nanotubes (SWCNTs). Two different approaches for the fabrication of SWCNT/hydrogel structures are examined: a simple SWCNT film transfer onto the as-prepared hydrogel and the film deposition onto the pre-stretched hydrogel. Functionality of our method is confirmed by scanning electron microscopy along with optical and electrical measurements of our structures while subjecting them to different strains. Since the hydrogel-based structures are intrinsically soft, stretchable, wet, and sticky, they conform well to a human skin. We demonstrate applications of our material as skin-like passive electrodes and active finger-mounted joint motion sensors. Our technique shows promise to accelerate the development of biointegrated wearable electronics.

    Original languageEnglish
    Pages (from-to)28069-28075
    Number of pages7
    JournalACS Applied Materials and Interfaces
    Volume10
    Issue number33
    DOIs
    Publication statusPublished - 22 Aug 2018

    Keywords

    • dry transfer
    • electrically conductive hydrogel
    • single-walled carbon nanotubes
    • stretchable electronics
    • tough hydrogels

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