Hydrogen clathrate (IMAGE) DOE/Oak Ridge National Laboratory Caption Field emission scanning electron microscopy reveals the microstructure of the porous activated carbon that can confine hydrogen at the nanoscale. Credit Joaquin Silvestre-Albero/University of Alicante Usage Restrictions n/a 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.