The study focuses on predicting the hydrodynamics of sodium alginate-based microgel “liquid core–gel shell” particles for droplet-based bioprinting. Hydrophobic polytetrafluoroethylene nanofiber-based coating (NBC #1) and hydrophilic polycaprolactone–polyvinylpyrrolidone NBC #2 are manufactured to serve as the basis for microgel deposition. An approach is proposed to model the flow of a Maxwell gel-like liquid with different fluidity, surface tension, and initial velocity along an inhomogeneous interface after microgel particle–NBC collision. Wetting and anti-wetting pressure differences allow estimating liquid impalement into NBCs at We = 10–50. For NBC #2, the initial particle velocity plays mainly a decisive role in predicting the contact diameter and height at maximum spreading and receding. For NBC #1, the pinning is considered by introducing the complex parameter resolving particle inertia, microgel rheology and surface tension, and NBC characteristics. The flow along the porous interface physically correlates with the extended Freundlich model, explaining the surface inhomogeneity caused by multilayer adsorption.
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January 2024
Research Article|
January 25 2024
Microgel particle deposition patterns after impinging on nanofiber-based coatings Available to Purchase
Alexandra Piskunova (Александра Пискунова)
;
Alexandra Piskunova (Александра Пискунова)
(Data curation, Formal analysis, Investigation, Software, Visualization, Writing – original draft)
Heat Mass Transfer Laboratory, National Research Tomsk Polytechnic University
, 30, Lenin Avenue, Tomsk 634050, Russia
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Nikita Khomutov (Никита Хомутов)
;
Nikita Khomutov (Никита Хомутов)
(Formal analysis, Investigation, Methodology, Writing – review & editing)
Heat Mass Transfer Laboratory, National Research Tomsk Polytechnic University
, 30, Lenin Avenue, Tomsk 634050, Russia
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Maxim Piskunov (Максим Пискунов)
Maxim Piskunov (Максим Пискунов)
a)
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Project administration, Supervision, Writing – original draft)
Heat Mass Transfer Laboratory, National Research Tomsk Polytechnic University
, 30, Lenin Avenue, Tomsk 634050, Russia
Search for other works by this author on:
Alexandra Piskunova (<span class='lang' lang='zh'>Александра Пискунова</span>)
Data curation, Formal analysis, Investigation, Software, Visualization, Writing – original draft
Heat Mass Transfer Laboratory, National Research Tomsk Polytechnic University
, 30, Lenin Avenue, Tomsk 634050, Russia
Nikita Khomutov (<span class='lang' lang='zh'>Никита Хомутов</span>)
Formal analysis, Investigation, Methodology, Writing – review & editing
Heat Mass Transfer Laboratory, National Research Tomsk Polytechnic University
, 30, Lenin Avenue, Tomsk 634050, Russia
Maxim Piskunov (<span class='lang' lang='zh'>Максим Пискунов</span>)
Conceptualization, Formal analysis, Funding acquisition, Investigation, Project administration, Supervision, Writing – original draft
a)
Heat Mass Transfer Laboratory, National Research Tomsk Polytechnic University
, 30, Lenin Avenue, Tomsk 634050, Russia
Physics of Fluids 36, 013119 (2024)
Article history
Received:
November 01 2023
Accepted:
January 02 2024
Citation
Alexandra Piskunova, Nikita Khomutov, Maxim Piskunov; Microgel particle deposition patterns after impinging on nanofiber-based coatings. Physics of Fluids 1 January 2024; 36 (1): 013119. https://doi.org/10.1063/5.0185711
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