Fig.2 (IMAGE) The Chinese University of Hong Kong Caption Multiple small WT-TENG units can be easily combined and integrated as one larger unit and realise multiplied electric outputs. Credit CUHK 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.