Water on Gold Electrodes (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Schematic of the electrochemical cell – a silicon nitride (Si3N4) membrane separates the liquid from vacuum region of the x-ray source; a 20nm thin-film gold electrode is deposited on liquid side of the membrane. Detection of x-ray absorption is via fluorescence emission on the vacuum side or electron emission at the gold electrode. Credit Image courtesy of 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.