title: Ubiquity of domain patterns in sheared viscoelastic fluids.
abstract: A ubiquitous domain pattern is observed in two-phase viscoelastic fluids falling within the simple paradigm of soft viscoelastic domains suspended in a less viscoelastic fluid under shear flow. Three strikingly different complex fluids exhibit the same shear-induced domain structure, which we relate to the elasticity of the dispersed phase via an approximate Weissenberg number. We suggest a physical mechanism for the formation of this pervasive pattern, independent of the dynamic origin of the elasticity of the suspended phase.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. erik.hobbie@nist.gov
authors.forename: E K
authors.initials: EK
authors.lastname: Hobbie
authors.forename: S
authors.initials: S
authors.lastname: Lin-Gibson
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: J A
authors.initials: JA
authors.lastname: Pathak
authors.forename: H
authors.initials: H
authors.lastname: Kim