colour centre (IMAGE) University of Münster Caption Hexagonal boron nitride (red: boron atoms, blue: nitrogen atoms) with a colour centre (blue-red) illuminated with ultrafast laser pulses (green) Credit Münster University - Johann Preuß Usage Restrictions The use of the image is permitted exclusively in connection with this press release and with reference to the source. 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.