Development of a Janus Droplet (IMAGE) Saarland University Caption The fluorescent microscope images show water-ethanol droplets in an oil-surfactant mixture with a fluorescent dye (scale bar 100 μm). Credit Menglin Li, Saarland University 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.