Oxygen Barrier Device (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Microelectronic device fabricated in the Electrical Engineering and Computer Science Department at UC Berkeley. Electrical calcium tests demonstrated the self-assembling nanosheet’s potential as an oxygen barrier for microelectronics such as thin-film solar materials called organic photovoltaics. Credit Image courtesy of Jasmine Jan, UC Berkeley 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.