title: Formation of a multiscale aggregate structure through spontaneous blebbing of an interface.
abstract: The motion of an oil-water interface that mimics biological motility was investigated in a Hele-Shaw-like cell where elastic surfactant aggregates were formed at the oil-water interface. With the interfacial motion, millimeter-scale pillar structures composed of the aggregates were formed. The pillars grew downward in the aqueous phase, and the separations between pillars were roughly equal. Small-angle X-ray scattering using a microbeam X-ray revealed that these aggregates had nanometer-scale lamellar structures whose orientation correlated well with their location in the pillar structure. It is suggested that these hierarchical spatial structures are tailored by the spontaneous interfacial motion.
authors.affiliation: Department of Applied Physics, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Sumino
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kitahata
authors.forename: Yuya
authors.initials: Y
authors.lastname: Shinohara
authors.forename: Norifumi L
authors.initials: NL
authors.lastname: Yamada
authors.forename: Hideki
authors.initials: H
authors.lastname: Seto
mesh_terms: D049329:Nanostructures; D009821:Oils / Q000737:chemistry*; D013499:Surface Properties; D013501:Surface-Active Agents; D014867:Water / Q000737:chemistry*
chemical_list: D009821:Oils; D013501:Surface-Active Agents; D014867:Water