Measuring and Simulating the Transient Packing Density During Ultrasound Directed Self-Assembly and Vat Polymerization Manufacturing of Engineered Materials

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dc.contributor.authorNoparast, Soheylen
dc.contributor.authorGuevara Vasquez, Fernandoen
dc.contributor.authorFrancoeur, Mathieuen
dc.contributor.authorRaeymaekers, Barten
dc.date.accessioned2025-02-17T17:36:06Zen
dc.date.available2025-02-17T17:36:06Zen
dc.date.issued2024-04-08en
dc.description.abstractUltrasound-directed self-assembly (DSA) uses ultrasound waves to organize and orient particles dispersed in a fluid medium into specific patterns. Combining ultrasound DSA with vat photopolymerization (VP) enables manufacturing materials layer-by-layer, wherein each layer the organization and orientation of particles in the photopolymer is controlled, which enables tailoring the properties of the resulting composite materials. However, the particle packing density changes with time and location as particles organize into specific patterns. Hence, relating the ultrasound DSA process parameters to the transient local particle packing density is important to tailor the properties of the composite material, and to determine the maximum speed of the layer-by-layer VP process. This paper theoretically derives and experimentally validates a 3D ultrasound DSA model and evaluates the local particle packing density at locations where particles assemble as a function of time and ultrasound DSA process parameters. The particle packing density increases with increasing particle volume fraction, decreasing particle size, and decreasing fluid medium viscosity is determined. Increasing the particle size and decreasing the fluid medium viscosity decreases the time to reach steady-state. This work contributes to using ultrasound DSA and VP as a materials manufacturing process.en
dc.description.versionPublished versionen
dc.format.extent14 page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1002/admt.202301950en
dc.identifier.eissn2365-709Xen
dc.identifier.issn2365-709Xen
dc.identifier.issue11en
dc.identifier.orcidRaeymaekers, Bart [0000-0001-5902-3782]en
dc.identifier.urihttps://hdl.handle.net/10919/124598en
dc.identifier.volume9en
dc.language.isoenen
dc.publisherWileyen
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjecttransienten
dc.subjectultrasound directed self-assemblyen
dc.subjectvat photopolymerizationen
dc.subjectviscosityen
dc.titleMeasuring and Simulating the Transient Packing Density During Ultrasound Directed Self-Assembly and Vat Polymerization Manufacturing of Engineered Materialsen
dc.title.serialAdvanced Materials Technologiesen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherArticleen
dc.type.otherJournalen
pubs.organisational-groupVirginia Techen
pubs.organisational-groupVirginia Tech/Engineeringen
pubs.organisational-groupVirginia Tech/Engineering/Mechanical Engineeringen
pubs.organisational-groupVirginia Tech/All T&R Facultyen
pubs.organisational-groupVirginia Tech/Engineering/COE T&R Facultyen

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