Electrothermal air purification has emerged as a highly effective strategy for removing airborne pollutants, particulate matter, and pathogens , offering rapid response and high purification efficiency. However, a long‑standing challenge in this field lies in the trade‑off between membrane porosity and electrical conductivity : highly porous membranes enable efficient airflow but typically suffer from poor conductivity, while conductive materials often restrict air permeabili

Continuous physiological monitoring is rapidly transforming healthcare, enabling earlier detection of disease, personalized treatment, and improved long‑term management of chronic conditions. At the heart of this transformation lies the need for highly sensitive, reliable, and biocompatible sensing materials that can operate seamlessly within wearable and implantable devices. This review provides a comprehensive overview of next‑generation piezoelectric materials that are d