Invited Self-Powered Wearable and Implantable Electrical Stimulation Devices for Biomedical Applications
TLDR Self-powered devices can speed up healing, boost hair growth, and help control weight without batteries.
The document discussed the development and application of self-powered wearable and implantable electrical stimulation devices using flexible nanogenerators. These devices converted biomechanical energy into electrical pulses for therapeutic treatments, such as skin wound healing, hair growth, and obesity control. In rat studies, an electrical stimulation bandage accelerated skin wound healing from 12 days to 3 days by facilitating fibroblast activity. For hair growth, electrical pulses improved hair regeneration in rats and mice by enhancing growth factor secretion. Additionally, a vagus nerve stimulation system was developed to control weight in rats, reducing body weight by 38% over 100 days. These innovations highlighted a new, battery-free approach to electrical therapeutic technology.