Triboelectric Nanogenerator Powers Calculator (IMAGE) Georgia Institute of Technology Caption With this triboelectric nanogenerator and two-stage power management and storage system, finger tapping motion generates enough power to operate this scientific calculator. Credit Credit: Zhong Lin Wang Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.