Oil droplet cluster (IMAGE) Penn State Caption Chasing pairs of bromooctane and ethoxynonafluorobutane droplets form larger active droplet clusters with additional movement behaviors in aqueous surfactant solution. Credit Zarzar Laboratory/Nature Chemistry 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.