Energy harvesting refers to the capture of small amounts of ambient energy from light, heat, motion, vibration, radio waves, fluid flow, or chemical gradients and conversion into usable electrical power. In nanotechnology, energy harvesting uses nanoscale materials and structures to improve charge generation, surface interactions, mechanical flexibility, optical absorption, and thermal transport. It supports autonomous sensors, wearable devices, biomedical implants, and distributed electronics.
Energy harvesting matters because connected devices and remote systems increasingly require power sources that reduce battery replacement and enable long-term operation. Research includes piezoelectric, triboelectric, thermoelectric, photovoltaic, electromagnetic, and bioenergy harvesters. Nanomaterials such as nanowires, graphene, carbon nanotubes, piezoelectric nanoparticles, and flexible nanocomposites can improve efficiency, sensitivity, and device integration. The field connects closely to triboelectric nanogenerators, thermoelectrics, and wearable electronics.
Conferences on energy harvesting appear in nanotechnology, sensors, materials science, flexible electronics, Internet-of-Things, and energy-device programs. Sessions often cover nanogenerators, self-powered sensors, wearable power, hybrid harvesters, and system integration. Tracking energy-harvesting events helps researchers follow how nanoscale materials are enabling small, distributed, and self-powered technologies.