Topological insulators (IMAGE) University of Tokyo Caption Subtle changes in the arrangement of component materials can have a stronger knock-on effect to the bulk material than was previously thought. Credit © 2020 Kondo et al 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.