Electrochemical devices using sunlight to generate fuel are hampered by the inability to observe and measure interactions at the liquid-crystal interface. Berkeley Lab researchers have invented a cell designed to allow unobtrusive observation of isolated, operating catalysts. https://newscenter.lbl.gov/2019/09/12/a-chemical-reaction-close-up-new-technology-gives-a-glimpse-of-solar-fuel-generation-in-action/