2D-crystals emit laser light (IMAGE) University of Oldenburg Caption Single-layer crystals (centre of image) placed between "mirrors" can be brought to emit laser light at room temperature. Credit University of Oldenburg/QMat Usage Restrictions Only to be used in connection with the press release, attribution is required. 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.