Seam at the boundary of two TMDCs. (IMAGE) Tokyo Metropolitan University Caption Tungsten diselenide and tungsten disulfide monolayers combine over an atomically thin seam in an in-plane heterostructure. Credit Tokyo Metropolitan University Usage Restrictions Can be used 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.