LAUSR

In the world of increasing energy consumption, nanogenerators have shown high potential for energy harvesting and self-powered portable electronics. Here, flexible and dual-mode triboelectric nanogenerator (TENG) combining both vertical contact-separation and single electrical modes has been developed to convert environmental mechanical energy into electricity with highly encapsulated and multifunctional strategies. By introducing the polymer melt wetting technique, the polymer nanotubes are fabricated on the surface of TENG, which provides self-cleaning and hydrophobic features beneficial for water drop energy harvesting based on the device. For such mechanical energy harvesting, the maximum output power and open-circuit voltage can arrive at 0.025 mW and 41 V, respectively. By designing the dimensions of the device, the dual-mode TENG is utilized as self-powered sensor to detect human body motion such as phalanges movement of fingers. The fabricated dual-mode TENG promotes the development of energy harvesting and self-powered human motion sensors for artificial intelligent prosthetics, human kinematics and human body recovery treatment.