Figure 1 (IMAGE) Science China Press Caption (a) Optical image of WS2/WSe2 heterobilayer. (b) The energy of the TDE in WS2/WSe2 heterobilayer as a function of twist angle. (c) The polarized k-space emission pattern of the TDE. Credit ©Science China Press Usage Restrictions Use with credit. License Original 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.