Sustainable Bio-Based Nanogenerators for Self-Powered Healthcare and Wearable Electronics

Wearable healthcare systems are becoming increasingly important in response to population aging, chronic diseases, and the desire for more personalized devices, which has led to a rise in the usage of traditional power sources and toxic batteries. To address this, triboelectric and piezoelectric nanogenerators have emerged as promising alternatives, converting any waste mechanical energy to electricity. Lately, this shift has been toward green, bio-derived materials like nanocellulose, chitosan, silk fibroin, and hydrogels. Replacing conventional materials with these natural alternatives reduces electronic waste and toxicity while providing the biocompatibility required for wearable healthcare electronics.Despite rapid improvements in device performance, a critical gap remains in transforming these sustainable energy harvesting devices from laboratory prototypes into clinically reliable solutions. Researchers face distinct challenges in material and device engineering such as long-term stability under physiological conditions, long-term biocompatibility, comfort, and portability. This Research Topic aims to address these challenges by bridging multidisciplinary perspectives from material science, bioengineering, and electronics. Our goal is to highlight innovative strategies that merge sustainable biomaterial design with functional, self-powered wearable healthcare systems.To gather further insights into the development and application of sustainable nanogenerators as wearable healthcare devices, we welcome articles addressing, but not limited to, the following themes:• Bio-derived, biodegradable, and bioresorbable materials and composites for energy harvesting devices• Nanocellulose-, chitosan-, silk fibroin-, protein-, and other biomaterial-based nanogenerators• Biocompatible self-healing hydrogel matrix for wearable energy harvesting• Integrated self-powered biosensors for chemical, biological, physiological monitoring• Nanogenerators for wound healing, tissue repair, nerve stimulation, and biomedical application• Energy management, storage, wireless communication, and low-power electronics for self- powered healthcare systems• Flexible, skin-conformal, textile-based, and portable wearable devices• Long-term stability, mechanical reliability, and performance under physiological conditions• Biocompatibility, biodegradation, bio resorption, toxicity assessment, and environmental impact• Strategies for scalable fabrication, system integration, validation, and clinical translation of sustainable nanogenerators Topic editors: Swati Panda, Dr Uday Kumar Khanapuram, Sugato Hajra Source: https://www.frontiersin.org/research-topics/83817/sustainable-bio-based-nanogenerators-for-self-powered-healthcare-and-wearable-electronics