Materials (IMAGE) University of Liverpool Caption The arrangement of chemical bonds in different materials can make it hard to put them together to form a clean interface, like the green and red blocks in the figure. It is possible to construct a flexible block, which will fit with both materials, and bridge the gap between them, like the blue blocks bridge the gap between the red and green ones. Credit University of Liverpool 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.