Fibrous Pressure Sensor with Unique Resistance Increase under Partial Compression: Coaxial Wet-Spun TiO₂/Graphene/Thermoplastic Polyurethane Multi-Wall Multifunctional Fiber.

ABSTRACT: Fiber-shaped resistive pressure-sensitive sensors are rare. Although fibers are widely used in strain sensors owing to their structural advantages, developing fiber-shaped resistive pressure sensors is challenging. This challenge arises because the fiber acts as a series circuit along its axis, requiring increased resistance in the compressed region for a significant signal. Coaxial wet-spinning is used to create a multi-walled fiber. The outer layer, made of thermoplastic polyurethane (TPU)/TiO₂ slurry, ensured a smooth surface, while the inner core, containing 4% graphene nanoplatelets (GNPs), is extruded at 20 mL h^-1. Unlike conventional resistance-increasing pressure sensors, TGTMW fiber shows rising resistance under compression due to microcracks in its multi-wal

SUBMITTER: Chen Z 

PROVIDER: S-EPMC12510290 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature