An intrinsically stretchable power-source system for bioelectronics
This work demonstrates a fully stretchable and integrated power source, consisting of a triboelectric nanogenerator (TENG), a polymeric four-transistor rectifier, and a supercapacitor, designed to harvest stretching-type mechanical energy from tissue/organ motions. The TENG, featuring tissue-like softness, high stretchability, and high output power, has been successfully tested as an implantable harvester on a porcine heart. The fully integrated power source can operate conformably on the human body, offering sustainable energy for wearable and implantable electronics.