Microfluidic interfacial tensiometry

POSTER

Abstract

A microfluidic instrument to measure interfacial tension of multicomponent immiscible liquids is reported. The instrument measures deformation and retraction dynamics of drops under extensional flow, and is accurate within a few percent. Binary and ternary mixtures have been examined. Surfactant transport phenomena and the effects of viscosity ratio and bounded flow have also been explored.

Authors

  • Jai Pathak

    NIST

  • Steven Hudson

    National Inst. of Standards and Technology, NIST

  • Joao Cabral

    Imperial College, London