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2022 年度 実施状況報告書

3D microfluidics for extensional rheometry

研究課題

研究課題/領域番号 21K03884
研究機関沖縄科学技術大学院大学

研究代表者

HAWARD Simon  沖縄科学技術大学院大学, マイクロ・バイオ・ナノ流体ユニット, グループリーダー (20812986)

研究期間 (年度) 2021-04-01 – 2024-03-31
キーワードextensional flow / microfluidics / rheology / polymer solution / viscosity
研究実績の概要

In FY2022, experiments were completed measuring the pressure drop and velocity field for viscoelastic polyacrylamide solutions (at dilute concentrations of 0.005 to 0.04 wt%) in a planar extensional flow device. Pressure drop and velocity field measurements have also been completed in the new uniaxial and biaxial extensional flow device developed during FY2021.
A new data analysis has been developed to estimate the extensional viscosity of Newtonian and viscoelastic fluids. This ensures that the expected (constant) extensional viscosity is obtained for Newtonian fluid, and also for the polymer solutions at small flow rates. At high flow rates the extensional viscosity of the polymer solutions increases up to a plateau value that depends on the mode of extension. For the dilute solutions tested, the plateau values in uniaxial and planar extension are equal to each other and double that found for biaxial extension. This is in agreement with the finitely-extensible non-linear elastic dumbbell model, which is often used to describe such fluids in theory. Two journal papers have been prepared based on the work conducted so far in FY2021 and FY2022, which are both currently under review in the Journal of Rheology.
Furthermore, experiments with viscoelastic polymer solutions revealed some interesting instability phenomena at high flow rates, which are worthy of a more detailed investigation. Our new data analysis method for estimation of the extensional viscosity also merits some additional experimental verification. These topics will be the focus of research in FY2023.

現在までの達成度 (区分)
現在までの達成度 (区分)

2: おおむね順調に進展している

理由

The project has progressed very well through FY2022. As it was hoped, the core experiments are now complete and there is sufficient time in FY2023 to explore the onset of elastic instabilities in the uniaxial and biaxial extensional flow configurations. Characterization of the instabilities will be achieved using a LaVision volumetric (3-component) stereoscopic flow velocimetry set up. This is planned by the use of the more highly concentrated polyacrylamide solution (0.04%, which is the most prone to instability) in a solvent with the same refractive index as the glass microfluidic device.
Furthermore, we intend to reconfigure our uniaxial and biaxial extensional flow device to enable birefringence measurements to be made without requiring the polymer solution to have the same refractive index as the device. This will allow us to measure the width of the birefringent strand that forms along the device outlet, as a function of both the flow rate and the extensibility of the polymer, and will help to verify (or improve) our new data analysis method for computing the extensional viscosity. For these planned experiments we will employ dilute polystyrene of various molecular weights (i.e., various extensibility), and measurements will be made using a Photron high speed birefringence imaging set up. Numerical simulations of the flow using the finitely-extensible non-linear elastic dumbbell model are planned in order to compare with the experimental results.

今後の研究の推進方策

We are in a strong position to achieve all the research objectives targeted in this project (and more). In FY2023, our first two papers (one describing the development of the uniaxial and biaxial extensional flow device, and the other detailing the extensional viscosity measurements in uniaxial, planar and biaxial extension) should be published in Journal of Rheology. We will also perform the first experimental characterization of the viscoelastic flow instabilities arising in uniaxial and biaxial extensional flow. In addition, we hope to perform the first comprehensive birefringence measurements characterizing the dimensions of the birefringent strands that develop in uniaxial, planar and biaxial extension of polymer solutions. These experiments, which can be compared with theoretical predictions, will allow us to verify or refine our determination of the extensional viscosity based on our new analysis approach.

We anticipate that the results of this project comparing the viscoelastic flow response in uniaxial, planar and biaxial extension will lead to significant new insights into polymer solution rheology. In the second half of FY2023, we hope to submit two or three additional research papers based on the results of the project.

次年度使用額が生じた理由

Laboratory consumables (e.g., glass slides, tubing, reagents, etc)
Travel expenses to attend a domestic conference (7th International Soft Matter Conference, Osaka Japan, September 2023)
Open Access charges for journal publications

  • 研究成果

    (33件)

すべて 2023 2022

すべて 雑誌論文 (12件) (うち国際共著 12件、 査読あり 12件、 オープンアクセス 11件) 学会発表 (21件) (うち国際学会 19件、 招待講演 2件)

  • [雑誌論文] Prevention of edge fracture using a non-toxic liquid metal sealant2023

    • 著者名/発表者名
      San To Chan, Simon J Haward, Amy Q Shen
    • 雑誌名

      Physics of Fluids

      巻: 35 ページ: 011704

    • DOI

      10.1063/5.0135554

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Edge fracture of thixotropic elastoviscoplastic liquid bridges2023

    • 著者名/発表者名
      San To Chan, Stylianos Varchanis, Amy Q Shen, Simon J Haward
    • 雑誌名

      PNAS Nexus

      巻: 2 ページ: 1-14

    • DOI

      10.1093/pnasnexus/pgad042

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Canopy elastic turbulence: Spontaneous formation of waves in beds of passive slender microposts2023

    • 著者名/発表者名
      Charlotte de Blois, Simon J Haward, Amy Q Shen
    • 雑誌名

      Physical Review Fluids

      巻: 8 ページ: 023301

    • DOI

      10.1103/PhysRevFluids.8.023301

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Naturally derived colloidal rods in microfluidic flows2023

    • 著者名/発表者名
      Vincenzo Calabrese, Amy Q Shen, Simon J Haward
    • 雑誌名

      Biomicrofluidics

      巻: 17 ページ: 021301

    • DOI

      10.1063/5.0142867

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Perspectives on viscoelastic flow instabilities and elastic turbulence2022

    • 著者名/発表者名
      SS Datta, AM Ardekani, ... SJ Haward, AQ Shen, et al
    • 雑誌名

      Physical Review Fluids

      巻: 7 ページ: 080701

    • DOI

      10.1103/PhysRevFluids.7.080701

    • 査読あり / 国際共著
  • [雑誌論文] Non-Newtonian flows and instabilities in 3D glass microfluidic devices2022

    • 著者名/発表者名
      Simon J Haward, Amy Q Shen
    • 雑誌名

      Science Talks

      巻: 2 ページ: 100023

    • DOI

      10.1016/j.sctalk.2022.100023

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Evaluation of constitutive models for shear-banding wormlike micellar solutions in simple and complex flows2022

    • 著者名/発表者名
      Stylianos Varchanis, Simon J Haward, Cameron C Hopkins, John Tsamopoulos, Amy Q Shen
    • 雑誌名

      Journal of Non-Newtonian Fluid Mechanics

      巻: 307 ページ: 104855

    • DOI

      10.1016/j.jnnfm.2022.104855

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Upstream wall vortices in viscoelastic flow past a cylinder2022

    • 著者名/発表者名
      Cameron C Hopkins, Simon J Haward, Amy Q Shen
    • 雑誌名

      Soft Matter

      巻: 18 ページ: 4868-4880

    • DOI

      10.1039/D2SM00418F

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Alignment of colloidal rods in crowded environments2022

    • 著者名/発表者名
      Vincenzo Calabrese, Stylianos Varchanis, Simon J Haward, Amy Q Shen
    • 雑誌名

      Macromolecules

      巻: 55 ページ: 5610-5620

    • DOI

      10.1021/acs.macromol.2c00769

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Volumetric evolution of elastic turbulence in porous media2022

    • 著者名/発表者名
      Daniel W Carlson, Kazumi Toda-Peters, Amy Q Shen, Simon J Haward
    • 雑誌名

      Journal of Fluid Mechanics

      巻: 950 ページ: A36

    • DOI

      10.1017/jfm.2022.836

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Microstructural dynamics and rheology of worm-like diblock copolymer nanoparticle dispersions under a simple shear and a planar extensional flow2022

    • 著者名/発表者名
      Vincenzo Calabrese, Csilla Gyorgy, Simon J Haward, Thomas J Neal, Steven P Armes, Amy Q Shen
    • 雑誌名

      Macromolecules

      巻: 55 ページ: 10031-10042

    • DOI

      10.1021/acs.macromol.2c01314

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Effect of blockage ratio on flow of a viscoelastic wormlike micellar solution past a cylinder in a microchannel2022

    • 著者名/発表者名
      Cameron C Hopkins, Amy Q Shen, Simon J Haward
    • 雑誌名

      Soft Matter

      巻: 18 ページ: 8856-8866

    • DOI

      10.1039/D2SM01162J

    • 査読あり / オープンアクセス / 国際共著
  • [学会発表] Influence of geometric ordering on viscoelastic flow instabilities in 3D porous media2023

    • 著者名/発表者名
      EY Chen, CA Browne, SJ Haward, AQ Shen, SS Datta
    • 学会等名
      American Physical Society March Meeting
    • 国際学会
  • [学会発表] Optimized Microfluidic Device for Uniaxial and Biaxial Elongation of Mobile Fluids2023

    • 著者名/発表者名
      SJ Haward, F Pimenta, S Varchanis, K Toda-Peters, GH McKinley, MA Alves, AQ Shen
    • 学会等名
      Recent Trends in Microrheology and Microfluidics
    • 招待講演
  • [学会発表] Geometric Effects on the Dynamics of Viscoelastic Porous Media Flows2023

    • 著者名/発表者名
      SJ Haward, CC Hopkins, AQ Shen
    • 学会等名
      Yielding and Flow of Soft Matter Systems
    • 招待講演
  • [学会発表] Transport dynamics of microparticles in inertio-elastic vortex flows2022

    • 著者名/発表者名
      N Burshtein, AA Banaei, M Aulnette, SJ Haward, AQ Shen, L Brandt, A Lindner
    • 学会等名
      Annual European Rheology Conference
    • 国際学会
  • [学会発表] Alignment of colloidal rods in crowded environments2022

    • 著者名/発表者名
      V Calabrese, S Varchanis, SJ Haward, AQ Shen
    • 学会等名
      Annual European Rheology Conference
    • 国際学会
  • [学会発表] Torsional fracture of viscoelastic liquid bridges2022

    • 著者名/発表者名
      F van Berlo, ST Chan, HA Faizi, A Matsumoto, SJ Haward, PD Anderson, AQ Shen
    • 学会等名
      Annual European Rheology Conference
    • 国際学会
  • [学会発表] Shear-thinning and shear-thickening effects in the Oldroyd-B model2022

    • 著者名/発表者名
      S Varchanis, J Tsamopoulos, AQ Shen, SJ Haward
    • 学会等名
      Annual European Rheology Conference
    • 国際学会
  • [学会発表] Torsional instability of constant viscosity elastic liquid bridges2022

    • 著者名/発表者名
      ST Chan, S Varchanis, SJ Haward, AQ Shen
    • 学会等名
      Annual European Rheology Conference
    • 国際学会
  • [学会発表] Alignment of colloidal rods in crowded environments2022

    • 著者名/発表者名
      V Calabrese, S Varchanis, SJ Haward, AQ Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] A Space-Time Galerkin/Least-Squares Method for the simulation of non-Newtonian fluid flows2022

    • 著者名/発表者名
      S Varchanis, SJ Haward, AQ Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Volumetric evolution of elastic turbulence in porous media2022

    • 著者名/発表者名
      DW Carlson, SJ Haward, AQ Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Influence of geometric ordering on viscoelastic flow instabilities in 3D porous media2022

    • 著者名/発表者名
      EY Chen, CA Browne, SJ Haward, AQ Shen, SS Datta
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Optimized microfluidic device for homogeneous uniaxial and biaxial elongation of mobile fluids2022

    • 著者名/発表者名
      SJ Haward, F Pimenta, S Varchanis, K Toda-Peters, MA Alves, AQ Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Design and fabrication of an optimized “6-arm cross-slot” device2022

    • 著者名/発表者名
      SJ Haward, F Pimenta, S Varchanis, DW Carlson, K Toda-Peters, MA Alves, AQ Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Rheological effects on the cross-slot flow instability2022

    • 著者名/発表者名
      Arisa Yokokoji, Stylianos Varchanis, Simon J. Haward, Amy Q. Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Upstream wall vortices in viscoelastic flow past a cylinder2022

    • 著者名/発表者名
      Cameron C. Hopkins, Simon J. Haward, and Amy Q. Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Volumetric evolution of elastic turbulence in porous media2022

    • 著者名/発表者名
      Daniel W. Carlson, Kazumi Toda-Peters, Amy Q. Shen, and Simon J. Haward
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Block copolymer worms under flow: shear and stretch2022

    • 著者名/発表者名
      Vincenzo Calabrese, Csilla Gyorgy, Simon J. Haward, Thomas J. Neal, Steven P. Armes, and Amy Q. Shen
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Viscoelastic promotion of pore-scale commotion2022

    • 著者名/発表者名
      Daniel W. Carlson, Kazumi Toda-Peters, Amy Q. Shen, and Simon J. Haward
    • 学会等名
      Society of Rheology Annual Meeting
    • 国際学会
  • [学会発表] Influence of geometric ordering on viscoelastic flow instabilities in 3D porous media2022

    • 著者名/発表者名
      EY Chen, CA Browne, SJ Haward, AQ Shen, SS Datta
    • 学会等名
      American Physical Society Division of Fluid Dynamics 75th Annual Meeting
    • 国際学会
  • [学会発表] Rheological and flow characteristics of extensible yield stress fluids2022

    • 著者名/発表者名
      M Abdelgawad, SJ Haward, AQ Shen, ME Rosti
    • 学会等名
      American Physical Society Division of Fluid Dynamics 75th Annual Meeting
    • 国際学会

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公開日: 2023-12-25  

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