Abstract
Piezoelectric nanoparticles offer a chance for advancement toward self-powered systems through energy harvesting. The use of a system or device that performs a function without the requirement for an external power source, such as a battery or any other type of source, is made possible by the newly emerging technology known as self-powered systems. For instance, this technology can capture energy from nearby sources and transform it into electric energy utilizing the piezoelectric effect. The creation of some self-powered systems based on nano-devices would be facilitated by the development of a nanogenerator (NG) to transform environmental energy into electric energy. Zinc oxide (ZnO) has been employed in a wide range of applications, including optoelectronics, chemical sensors, piezoelectric transducers, and varistors, due to its many functions. Consequently, ZnO-based piezoelectric composites would be a different option for flexible and small implantable sensors that may immediately detect and monitor mechanical stimulation or pressure changes occurring in the patient's organs.