Microdevices for extensional rheometry of low viscosity elastic liquids: a review

Francisco J Galindo-Rosales, M.A. Alves, Monica Oliveira

Research output: Contribution to journalArticlepeer-review

106 Citations (Scopus)
78 Downloads (Pure)


Extensional flows and the underlying stability/instability mechanisms are of extreme relevance to the efficient operation of inkjet printing, coating processes and drug delivery systems, as well as for the generation of micro droplets. The development of an extensional rheometer to characterize the extensional properties of low viscosity fluids has therefore stimulated great interest of researchers, particularly in the last decade. Microfluidics has proven to be an extraordinary working platform and different configurations of potential extensional microrheometers have been proposed. In this review, we present an overview of several successful designs, together with a critical assessment of their capabilities and limitations.
Original languageEnglish
Pages (from-to)1-19
JournalMicrofluidics and Nanofluidics
Issue number1-2
Publication statusPublished - Jan 2013


  • microfluidics
  • extensional flow
  • filament stretching
  • filament thinning
  • diluted polymer solution
  • rheometry
  • extensional viscosity
  • viscoelasticity


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