Materials Synthesis (IMAGE) University at Buffalo Caption UB researchers work with a dual chamber thin film deposition system that can be used to synthesize thin film materials. In the new study, this machine was used to create europium sulfide films and tungsten trioxide, a precursor for 2D tungsten disulfide. Credit Credit: Douglas Levere / University at Buffalo Usage Restrictions This image may only be used in news reports discussing the research in the associated press release. 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.