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A computational study of droplet-based bioprinting: Effects of viscoelasticity
Koc Univ, Dept Mech Engn, TR-34450 Istanbul, Turkey.;Univ Cent Florida, Dept Mech & Aerosp Engn, Orlando, FL 32816 USA..
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, Centres, SeRC - Swedish e-Science Research Centre. Koc Univ, Dept Mech Engn, TR-34450 Istanbul, Turkey..
Univ Connecticut, Connecticut Inst Brain & Cognit Sci, Inst Collaborat Hlth Intervent & Policy, Dept Biomed Engn,Inst Mat Sci,Dept Mech Engn, Storrs, CT 06269 USA..
Koc Univ, Dept Mech Engn, TR-34450 Istanbul, Turkey..
2019 (English)In: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 31, no 8, article id 081901Article in journal (Refereed) Published
Abstract [en]

Despite significant progress, cell viability continues to be a central issue in droplet-based bioprinting applications. Common bioinks exhibit viscoelastic behavior owing to the presence of long-chain molecules in their mixture. We computationally study effects of viscoelasticity of bioinks on cell viability during deposition of cell-loaded droplets on a substrate using a compound droplet model. The inner droplet, which represents the cell, and the encapsulating droplet are modeled as viscoelastic liquids with different material properties, while the ambient fluid is Newtonian. The model proposed by Takamatsu and Rubinsky ["Viability of deformed cells," Cryobiology 39(3), 243-251 (1999)] is used to relate cell deformation to cell viability. We demonstrate that adding viscoelasticity to the encapsulating droplet fluid can significantly enhance the cell viability, suggesting that viscoelastic properties of bioinks can be tailored to achieve high cell viability in droplet-based bioprinting systems. The effects of the cell viscoelasticity are also examined, and it is shown that the Newtonian cell models may significantly overpredict the cell viability. Published under license by AIP Publishing.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2019. Vol. 31, no 8, article id 081901
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-260204DOI: 10.1063/1.5108824ISI: 000483888900034Scopus ID: 2-s2.0-85071031700OAI: oai:DiVA.org:kth-260204DiVA, id: diva2:1355796
Conference
10th National Congress on Fluid Mechanics of China, OCT 25-28, 2018, Hangzhou, PEOPLES R CHINA
Note

QC 20190930

Available from: 2019-09-30 Created: 2019-09-30 Last updated: 2019-09-30Bibliographically approved

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Izbassarov, Daulet

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