With the recent rapid development of wireless sensor networks, energy harvesting devices for power supply of those networks are also in the spotlight. Among various types of the energy harvesting devices, triboelectric nanagenerator (TENG) have attracted a lot of attentions. TENG generate electrical power via contact-electrification and electrostatic induction. When two different surfaces contact by an external mechanical excitation, those surfaces are electrified in opposite polarities. Then if the surfaces move far from each other by releasing the excitation, the electrical equilibrium is broken and charges flow through the electrodes which are attached to the backside of the contact surfaces to achieve another equilibrium state. Current in the opposite direction can also be induced by applying the excitation again. Based on this operation principle, TENG converts wasted ambient mechanical energy to usable electrical energy.

 * 일시 :  2023년 01월 13일(금) 16시 30분