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Stable jets of viscoelastic fluids and self-assembled cylindrical capsules by hydrodynamic focusing

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Original languageEnglish
Pages (from-to)9052-9056
Number of pages5
JournalLangmuir
Volume22
Issue number21
DOIs
StatePublished - 10 Oct 2006

Abstract

We demonstrate formation of long-lived cylindrical jets of a viscoelastic fluid using hydrodynamic focusing. A solution of polyacrylamide in water is driven coaxially with immiscible oil and subjected to strong extensional flow. At high flow rates, the aqueous phase forms jets that are 4-90 mu m in diameter and several centimeters long. The liquid surfaces of these jets are then used as templates for assembly of microspheres into novel rigid and hollow cylinders.

    Research areas

  • COLLOIDAL PARTICLES, LIQUID INTERFACES, ELECTRIC-FIELD, BREAKUP, RHEOMETRY, DEVICE, SHELLS, FLOW, MICROFLUIDICS, COLLOIDOSOMES

ID: 1445130