MOF Particle (IMAGE) DOE/SLAC National Accelerator Laboratory Caption Cryo-EM images show a slice through a single MOF particle in atomic detail (left), revealing cage-like molecules (center) that can trap other molecules inside. The image at right shows carbon dioxide molecules trapped in one of the cages -- the first time this has ever been observed. Bottom right, a drawing of the molecular structure of the cage and the trapped CO2. Credit Li et al., <em>Matter</em>, 26 June 2019 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.