Micropatterned Composite Hydrogel Sheet with Surface Electronic Conductive Network for Ultrasensitive Strain Sensing.

ABSTRACT: Conductive hydrogels show great promise for wearable sensors but suffer from low sensitivity in small strain ranges. In this study, we developed a micropatterned composite hydrogel sheet (thickness: 1.2 ± 0.1 mm) by constructing a continuous electronic conductive network of carbon nanotubes (CNTs) on a highly crosslinked micropatterned hydrogel sheet. The sheet was fabricated via a two-step synthesis of a polyvinyl alcohol/polyacrylic acid polymer network-crosslinked by Zr⁴⁺ in a glycerol-water system-using sandpaper as the template. The first step ensured tight conformity to the template, while the second step preserved the micropattern's integrity and precision. The reverse sandpaper micropattern enables secure bonding of CNTs to the hydrogel and induces localized stress conce

SUBMITTER: Chu R 

PROVIDER: S-EPMC12652483 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature