Pressures and shears (IMAGE) Iowa State University Caption A laboratory image shows a rotational diamond anvil cell squeezing a sample within the gasket placed in the middle. Credit Image courtesy of Valery Levitas. Usage Restrictions None 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.