Multifunctional modular electrospun fiber with heterogenous structure for multimodal sensing
Flexible sensors have advanced rapidly to achieve skin-like multisensory capabilities, yet their performance is compromised by strain disturbances and multi-parameter interactions, impeding widespread deployment. Here, we report a flexible fibrous device with a patterned cellular structure enabling anti-strain interference, dual-parameter measurement, and static/dynamic detection. The patterned cellular fibrous structure achieves a heterogenous strain distribution that preserves sensing performance under 10% strain. The sensor integrates a piezoresistive component for low-frequency mechanical stimuli and a thermoelectric response to calibrate temperature-induced resistance changes. A hybrid piezoresistive/piezoelectric sensing platform was experimentally implemented for static pressure persistence and high-frequency acoustic excitation from 0 to 300 Hz. The hybrid tactile sensing achieved the highest material identification accuracy of 98.6%. This work provides valuable proposals to resolve practical constraints in flexible sensor applications, compelling advantages for broader wearable integration.