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Stability of High Speed 3D Printing in Liquid-Like Solids
University of Florida, USA.ORCID iD: 0000-0002-2473-9171
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2016 (English)In: ACS Biomaterials Science & Engineering, E-ISSN 2373-9878, Vol. 2, no 10, p. 1796-1799Article in journal (Refereed) Published
Abstract [en]

Fluid instabilities limit the ability of features to hold their shape in many types of 3D printing as liquid inks solidify into written structures. By 3D printing directly into a continuum of jammed granular microgels, these instabilities are circumvented by eliminating surface tension and body forces. However, this type of 3D printing process is potentially limited by inertial instabilities if performed at high speeds where turbulence may destroy features as they are written. Here, we design and test a high-speed 3D printing experimental system to identify the instabilities that arise when an injection nozzle translates at 1 m/s. We find that the viscosity of the injected material can control the Reynold's instability, and we discover an additional, unanticipated instability near the top surface of the granular microgel medium.

Place, publisher, year, edition, pages
American Chemical Society , 2016. Vol. 2, no 10, p. 1796-1799
Keywords [en]
3D printing, high-speed, liquid-like solid, microgel, Reynold's number, yield stress material, Article, environmental temperature, hydrostatic pressure, molecular stability, molecular weight, priority journal, shear stress, surface property, surface tension, three dimensional printing, velocity, viscometry, viscosity
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:ri:diva-56333DOI: 10.1021/acsbiomaterials.6b00184Scopus ID: 2-s2.0-84991387334OAI: oai:DiVA.org:ri-56333DiVA, id: diva2:1591331
Note

Funding details: National Science Foundation, NSF, 1352043, DMR-1352043; Funding text 1: This work is funded by National Science Foundation under Grant No. DMR-1352043.

Available from: 2021-09-06 Created: 2021-09-06 Last updated: 2023-05-23Bibliographically approved

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Harris, Kathryn L

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