Piezoelectricity provides an ideal electromechanical mechanism with emerging applications in wearable devices due to its simplicity and self-powered nature. However, the 3D printing of piezoelectric devices still faces many challenges, including material printability, high energy poling process, and low dimensional accuracy. This study demonstrates, for the first time, a tellurium nanowire-based piezoelectric

A facile two-step drop-coating method was used to make FA0.88MA0.12PbIxBr3-x (0≤x≤3) perovskite films for the first time. The films formed via a self-spreading process, without the assistance of coating apparatuses, gas blowing, vacuum, or antisolvent. High-quality perovskite films with different bandgaps were made and the photovoltaic performance was investigated. The cells with FA0.88MA0.12PbI2.85Br0

Wearable medical electronics have played an essential role in remote health monitoring and disease diagnosis. However, a self-powered wearable patch that is capable of accelerating wound healing and suitable for directly affixing to the human body remains a challenge. In this work, we established a flexible stretchable sandwich-structured triboelectric patch, composed of double-layer polydimethylsiloxane