Matrix Swelling-Induced Precracking in Graphene Woven Fabric for Ultrasensitive Strain Sensors.

ABSTRACT: The growing demand for highly sensitive flexible strain sensors in applications such as wearable electronics, healthcare monitoring, and environmental sensing has driven the development of materials capable of detecting subtle deformations with high precision. Herein, we introduce a precracked strain sensor based on solvent-swollen graphene woven fabric/polydimethylsiloxane (sGWF/PDMS) composites, designed to achieve ultrahigh gauge factors (GFs) and enhanced responsiveness to minor deformations. By utilizing PDMS swelling to induce network microcracks within the graphene structure, the sGWF/PDMS composites exhibit substantially improved sensitivity compared to traditional graphene-based strain sensors. Systematic in situ SEM analyses reveal that these preexisting microcracks expand

SUBMITTER: Wu Y 

PROVIDER: S-EPMC11780412 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature