Piezoelectric‐Augmented Thermoelectric Ionogels for Self‐Powered Multimodal Medical Sensors (Adv. Mater. 6/2025)

Multimodal Sensing Ionogels In article number 2414663, Chen Xu, Shengqiang Bai, Ziqi Liang, and coworkers demonstrat the multimodal sensing capabilities of a paradigm ionogel, [EMIM][TFSI]/PVDF–HFP. Under applied temperature and pressure fields, the iongel exhibits piezoelectric (PE) augmented ionic thermoelectric (iTE) properties, where ion transport is modulated by a PE-induced internal field. Such dual-stimuli sensitivity, coupled with iTE-based humidity responsiveness, holds great potential for clinical applications. It can effectively monitor vital signs such as blood pressure, cardiac function, and blood loss from wounds.