2021-02-24-Lin (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Using ultraviolet light, researchers probed the electronic characteristics of a 2D semiconductor (purple) as the number of substrate layers (green) increased. In the data maps, red circles mark an electronic feature that diminished as substrate layers were added. Credit Meng Kai Lin/University of Illinois at Urbana-Champaign 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.