title: Blebbing dynamics in an oil-water-surfactant system through the generation and destruction of a gel-like structure.
abstract: Interfacial dynamical blebbing of an oil droplet on an aqueous solution is reported. The oil droplet and the aqueous solution contain a fatty acid and a cationic surfactant, respectively. When the oil droplet was placed on an aqueous surface, the oil-water interface formed blebs, spherical extrusions on the oil-water interface and circular ones on the edge of the oil droplet. With increase of the concentration of the surfactant and/or the fatty acid, the generated blebs become smaller. Based on the experimental observations together with theoretical considerations, we conclude that the bleb formation is induced through generation and destruction of a gel-like intermediate phase.
authors.affiliation: Department of Physics, Graduate School of Science, Kyoto University and Spatio-Temporal Order Project, ICORP, JST, Kyoto 606-8502, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Sumino
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kitahata
authors.forename: Hideki
authors.initials: H
authors.lastname: Seto
authors.forename: Kenichi
authors.initials: K
authors.lastname: Yoshikawa