Nanoparticle Transport (IMAGE) University of Massachusetts Amherst Caption Oil-in-water droplets represented by shiny spheres stabilized by functional surfactants first pick up the nanoparticles, represented by small red balls, when traversing a nanoparticle-coated surface. Later in the same in-line process, when the particle-attached droplets meet the downstream empty surface with a high affinity for the nanoparticles, they drop the nanoparticles off onto the surface and move forward in the aqueous flow. Credit UMass Amherst/Richard Bai 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.