Experimental characterisation of a novel viscoelastic rectifier design

Kristian Ejlebjærg Jensen, Fridolin Okkels, Peter Szabo, M.A. Alves

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A planar microfluidic system with contractions and obstacles is characterized in terms of anisotropic flow resistance due to viscoelastic effects. The working mechanism is illustrated using streak photography, while the diodicity performance is quantified by pressure drop measurements. The point of maximum performance is found to occur at relatively low elasticity levels, with diodicity around 3.5. Based on a previously published numerical work [Ejlebjerg et al., Appl. Phys. Lett. 100, 234102 (2012)], 2D simulations of the FENE-CR differential constitutive model are also presented, but limited reproducibility and uncertainties of the experimental data prevent a direct comparison at low elasticity, where the flow is essentially two-dimensional. © 2012 American Institute of Physics.
Original languageEnglish
JournalBiomicrofluidics
Volume6
Issue number4
Pages (from-to)Paper 044112
ISSN1932-1058
DOIs
Publication statusPublished - 2012

Keywords

  • Genetic engineering
  • Microfluidics
  • Molecular biology
  • Elasticity

Cite this

Jensen, Kristian Ejlebjærg ; Okkels, Fridolin ; Szabo, Peter ; Alves, M.A. / Experimental characterisation of a novel viscoelastic rectifier design. In: Biomicrofluidics. 2012 ; Vol. 6, No. 4. pp. Paper 044112.
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Experimental characterisation of a novel viscoelastic rectifier design. / Jensen, Kristian Ejlebjærg; Okkels, Fridolin; Szabo, Peter; Alves, M.A.

In: Biomicrofluidics, Vol. 6, No. 4, 2012, p. Paper 044112.

Research output: Contribution to journalJournal articleResearchpeer-review

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AU - Szabo, Peter

AU - Alves, M.A.

PY - 2012

Y1 - 2012

N2 - A planar microfluidic system with contractions and obstacles is characterized in terms of anisotropic flow resistance due to viscoelastic effects. The working mechanism is illustrated using streak photography, while the diodicity performance is quantified by pressure drop measurements. The point of maximum performance is found to occur at relatively low elasticity levels, with diodicity around 3.5. Based on a previously published numerical work [Ejlebjerg et al., Appl. Phys. Lett. 100, 234102 (2012)], 2D simulations of the FENE-CR differential constitutive model are also presented, but limited reproducibility and uncertainties of the experimental data prevent a direct comparison at low elasticity, where the flow is essentially two-dimensional. © 2012 American Institute of Physics.

AB - A planar microfluidic system with contractions and obstacles is characterized in terms of anisotropic flow resistance due to viscoelastic effects. The working mechanism is illustrated using streak photography, while the diodicity performance is quantified by pressure drop measurements. The point of maximum performance is found to occur at relatively low elasticity levels, with diodicity around 3.5. Based on a previously published numerical work [Ejlebjerg et al., Appl. Phys. Lett. 100, 234102 (2012)], 2D simulations of the FENE-CR differential constitutive model are also presented, but limited reproducibility and uncertainties of the experimental data prevent a direct comparison at low elasticity, where the flow is essentially two-dimensional. © 2012 American Institute of Physics.

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KW - Microfluidics

KW - Molecular biology

KW - Elasticity

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