Covalent organic framework (IMAGE) University of Maryland Caption A sample of the covalent organic framework material that researchers found preserves its 2D mechanical properties as a multilayer stack. (Photo by Gustavo Raskosky/Rice University) Credit Gustavo Raskosky/Rice University) Usage Restrictions Provide photo credit: Gustavo Raskosky/Rice University) 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.