Choetsu under the microscope (IMAGE) University of Tokyo Caption A section of Choetsu-coated paper a fraction of a millimeter across viewed with different kinds of X-rays to see the distribution of compounds. Si is silicon, C is carbon and Ti is titanium. Credit ©2022 Hiroi et al. Usage Restrictions Credit ©2022 Hiroi et al. 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.