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Updated: Jul 7, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
Published on: April 19, 2018
Blebbing dynamics in an oil-water-surfactant system through the generation and destruction of a gel-like structure
Yutaka Sumino1, Hiroyuki Kitahata, Hideki Seto
1Department of Physics, Graduate School of Science, Kyoto University and Spatio-Temporal Order Project, ICORP, JST, Kyoto 606-8502, Japan.
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.
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