静電相互作用を利用した複数自走油滴の挙動制御

抄録

In this study, we focus on the chargeability of self-propelled oil droplets, and attempt to control their behavior. Multiple oleic acid oil droplets show probabilistic motions such as follow-up motion, translational motion, and repulsive motion by the interaction between the oil droplets and the surfactant solution. To control the behavior of multiple oil droplets, we adjust the pH concentration of the surfactant solution, and change the charging state of the oil / water interface using electrostatic interaction. In addition, we visualize the convection inside the oil droplets using PIV method, and analyze the relationship between the convection and the droplets motion.