Experiment (image) University of California - San Diego Share Print E-Mail Caption In this experiment, nanotree electrodes are submersed in water and illuminated by simulated sun light to measure electricity output of the device. Credit Photo credit: Joshua Knoff, UC San Diego Jacobs School of Engineering. Usage Restrictions With full credit. Share Print E-Mail 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.