<div class="csl-bib-body">
<div class="csl-entry">Ehrmann, K. (2025, June 27). <i>An entire world between black and white: Multi-material 3D printing with grayscale lithography</i> [Conference Presentation]. EPF European Polymer Congress 2025, Groningen, Netherlands (the).</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/225538
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dc.description.abstract
Modern devices, such as medical prostheses and data storage systems, often require the integration of multiple material properties. Traditionally, fabricating such components involves combining separately manufactured single-property parts using various engineering and manufacturing techniques. As a result, achieving true multi-material printing from a single vat has become a central focus in light-based 3D printing.
Techniques such as greyscale lithography (varying light intensity) and multi-wavelength printing (using different light colors) have enabled the tuning of material stiffness within a single resin by adjusting crosslinking density through controlled monomer conversion. However, these property differences tend to diminish over time due to post-curing from residual unreacted monomers, and the range of achievable material properties has largely been limited to soft versus stiff.
This talk presents advancements in greyscale lithography that extend beyond current limitations. It will highlight the fabrication of microscale objects with finely tunable mechanical properties and the integration of both degradable and non-degradable regions within a single 3D-printed structure.
Additionally, new strategies for one-photon vat photopolymerization enabling multi-material printing of macroscopic objects will be discussed. A key innovation is the effective trapping of crystallinity in photopolymers, allowing for precise control of transparency and thermomechanical behavior. This is achieved through adjustments in printing temperature or light intensity, introducing new capabilities for tailoring material properties during the printing process. These developments mark a significant step toward versatile, functionally complex 3D-printed components from a single resin system.
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.subject
multi-material printing
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dc.subject
vat photopolymerization
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dc.subject
photopolymerization
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dc.subject
3D printing
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dc.subject
additive manufacturing
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dc.subject
greyscale printing
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dc.subject
stereolithography
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dc.title
An entire world between black and white: Multi-material 3D printing with grayscale lithography
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
RIC9773224
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dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.project.title
Orthogonale Synthesestrategien für Vat Photopolymerisation - Elise Richter
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tuw.researchTopic.id
M7
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tuw.researchTopic.id
Q1
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tuw.researchTopic.id
M8
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tuw.researchTopic.name
Special and Engineering Materials
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tuw.researchTopic.name
Photonics
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tuw.researchTopic.name
Structure-Property Relationsship
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tuw.researchTopic.value
80
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tuw.researchTopic.value
10
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tuw.researchTopic.value
10
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tuw.publication.orgunit
E163-02-1 - Forschungsgruppe Polymerchemie und Technologie
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tuw.author.orcid
0000-0002-0161-0527
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tuw.event.name
EPF European Polymer Congress 2025
en
tuw.event.startdate
22-06-2025
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tuw.event.enddate
27-06-2025
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Groningen
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tuw.event.country
NL
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tuw.event.institution
EPF
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tuw.event.presenter
Ehrmann, Katharina
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tuw.event.track
Multi Track
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wb.sciencebranch
Chemie
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wb.sciencebranch
Chemische Verfahrenstechnik
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wb.sciencebranch
Werkstofftechnik
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wb.sciencebranch.oefos
1040
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wb.sciencebranch.oefos
2040
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wb.sciencebranch.oefos
2050
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wb.sciencebranch.value
80
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wb.sciencebranch.value
10
-
wb.sciencebranch.value
10
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item.grantfulltext
none
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item.fulltext
no Fulltext
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item.cerifentitytype
Publications
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.languageiso639-1
en
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item.openairetype
conference paper not in proceedings
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crisitem.author.dept
E163-02-1 - Forschungsgruppe Polymerchemie und Technologie
