High-throughput sorting of drops in microfluidic chips using electric capacitance

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

Abstract

A theoretical model has been developed to analyse bubble rise in water and subsequent impact and bounce against a horizontal glass plate. The multiscale nature of the problem, where the bubble size is on the millimetre range and the film drainage process happens on the micrometre to nanometre scale requires the combined use of different modelling techniques. On the macro scale we solve the full Navier–Stokes equations in cylindrical coordinates to model bubble rise whereas modelling film drainage on the micro scale is based on lubrication theory because the film Reynolds number becomes much smaller than unity. Quantitative predictions of this model are compared with experimental data obtained using synchronised high-speed cameras. Video recording of bubble rise and bounce trajectories are combined with interferometry data to deduce the position and time-dependent thickness of the thin water film trapped between the deformed bubble and the glass plate. Bubble rise velocity indicated that the boundary condition at the bubble surface was tangentially immobile. Quantitative comparisons are presented for bubbles of different size to quantify similarities and differences.
Original languageEnglish
Article number044116
Pages (from-to)044116-
Number of pages13
JournalBiomicrofluidics
Volume9
Issue number044116
DOIs
Publication statusPublished - 2015

Fingerprint

classifying
Sorting
Microfluidics
Capacitance
bubbles
capacitance
chips
Throughput
Drainage
Glass
Video recording
Water
High speed cameras
drainage
Interferometry
Lubrication
Macros
Reynolds number
Trajectories
Boundary conditions

Keywords

  • METIS-312060
  • IR-97501

Cite this

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title = "High-throughput sorting of drops in microfluidic chips using electric capacitance",
abstract = "A theoretical model has been developed to analyse bubble rise in water and subsequent impact and bounce against a horizontal glass plate. The multiscale nature of the problem, where the bubble size is on the millimetre range and the film drainage process happens on the micrometre to nanometre scale requires the combined use of different modelling techniques. On the macro scale we solve the full Navier–Stokes equations in cylindrical coordinates to model bubble rise whereas modelling film drainage on the micro scale is based on lubrication theory because the film Reynolds number becomes much smaller than unity. Quantitative predictions of this model are compared with experimental data obtained using synchronised high-speed cameras. Video recording of bubble rise and bounce trajectories are combined with interferometry data to deduce the position and time-dependent thickness of the thin water film trapped between the deformed bubble and the glass plate. Bubble rise velocity indicated that the boundary condition at the bubble surface was tangentially immobile. Quantitative comparisons are presented for bubbles of different size to quantify similarities and differences.",
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year = "2015",
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pages = "044116--",
journal = "Biomicrofluidics",
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}

High-throughput sorting of drops in microfluidic chips using electric capacitance. / Pit, Arjen; de Ruiter, Riëlle; Wijnperle, Daniël; Duits, Michael H.G.; Mugele, Friedrich Gunther.

In: Biomicrofluidics, Vol. 9, No. 044116, 044116, 2015, p. 044116-.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - High-throughput sorting of drops in microfluidic chips using electric capacitance

AU - Pit, Arjen

AU - de Ruiter, Riëlle

AU - Wijnperle, Daniël

AU - Duits, Michael H.G.

AU - Mugele, Friedrich Gunther

PY - 2015

Y1 - 2015

N2 - A theoretical model has been developed to analyse bubble rise in water and subsequent impact and bounce against a horizontal glass plate. The multiscale nature of the problem, where the bubble size is on the millimetre range and the film drainage process happens on the micrometre to nanometre scale requires the combined use of different modelling techniques. On the macro scale we solve the full Navier–Stokes equations in cylindrical coordinates to model bubble rise whereas modelling film drainage on the micro scale is based on lubrication theory because the film Reynolds number becomes much smaller than unity. Quantitative predictions of this model are compared with experimental data obtained using synchronised high-speed cameras. Video recording of bubble rise and bounce trajectories are combined with interferometry data to deduce the position and time-dependent thickness of the thin water film trapped between the deformed bubble and the glass plate. Bubble rise velocity indicated that the boundary condition at the bubble surface was tangentially immobile. Quantitative comparisons are presented for bubbles of different size to quantify similarities and differences.

AB - A theoretical model has been developed to analyse bubble rise in water and subsequent impact and bounce against a horizontal glass plate. The multiscale nature of the problem, where the bubble size is on the millimetre range and the film drainage process happens on the micrometre to nanometre scale requires the combined use of different modelling techniques. On the macro scale we solve the full Navier–Stokes equations in cylindrical coordinates to model bubble rise whereas modelling film drainage on the micro scale is based on lubrication theory because the film Reynolds number becomes much smaller than unity. Quantitative predictions of this model are compared with experimental data obtained using synchronised high-speed cameras. Video recording of bubble rise and bounce trajectories are combined with interferometry data to deduce the position and time-dependent thickness of the thin water film trapped between the deformed bubble and the glass plate. Bubble rise velocity indicated that the boundary condition at the bubble surface was tangentially immobile. Quantitative comparisons are presented for bubbles of different size to quantify similarities and differences.

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KW - IR-97501

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JO - Biomicrofluidics

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