Toma & Zeng at LBNL (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Guosong Zeng, a postdoctoral scholar, and Francesca Toma, a staff scientist, both in Berkeley Lab's Chemical Sciences Division, test an artificial photosynthesis device made of gallium nitride. Rather than degrading over time, which is typical for devices that turn water and light into hydrogen fuel, Toma and Zeng discovered that this device improves. Credit Thor Swift/Berkeley Lab 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.