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Article: Hopping Light Vat Photopolymerization for Multiscale Fabrication

TitleHopping Light Vat Photopolymerization for Multiscale Fabrication
Authors
Keywordsadditive manufacturing
computer vision
hopping light
multiscale
vat photopolymerization
Issue Date2023
Citation
Small, 2023, v. 19, n. 11, article no. 2205784 How to Cite?
Abstract3D objects with features spanning from microscale to macroscale have various applications. However, the fabrication of such objects presents challenges to additive manufacturing (AM) due to the tradeoffs among manufacturable feature resolution, maximum build area, and printing speed. This paper presents a projection-based AM process called hopping light vat photopolymerization (HL-VPP) to address this critical barrier. The key idea of HL-VPP is to synchronize linear scanning projection with a galvo mirror's rotation. The projector moves continuously at a constant speed while periodically rotating a one-axis galvo mirror to compensate for the projector's linear movement so synchronized hopping motion can be achieved. By this means, HL-VPP can simultaneously achieve large-area (over 200 mm), fast-speed (scanning speed of 13.5 mm s-1), and high-resolution (10 µm pixel size) fabrication. The distinguishing characteristic of HL-VPP is that it allows for hundreds of times lower refresh rates without motion blur. Thus, HL-VPP decouples the fabrication efficiency limit imposed by the refresh rate and will enable super-fast curing in the future. This work will significantly advance VPP's use in applications that require macroscale part size with microscale features. The process has been verified by fabricating multiple multiscale objects, including microgrids and biomimetic structures.
Persistent Identifierhttp://hdl.handle.net/10722/341388
ISSN
2023 Impact Factor: 13.0
2023 SCImago Journal Rankings: 3.348
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXu, Yang-
dc.contributor.authorMao, Huachao-
dc.contributor.authorLiu, Cenyi-
dc.contributor.authorDu, Zhengyu-
dc.contributor.authorYan, Weijia-
dc.contributor.authorYang, Zhuoyuan-
dc.contributor.authorPartanen, Jouni-
dc.contributor.authorChen, Yong-
dc.date.accessioned2024-03-13T08:42:26Z-
dc.date.available2024-03-13T08:42:26Z-
dc.date.issued2023-
dc.identifier.citationSmall, 2023, v. 19, n. 11, article no. 2205784-
dc.identifier.issn1613-6810-
dc.identifier.urihttp://hdl.handle.net/10722/341388-
dc.description.abstract3D objects with features spanning from microscale to macroscale have various applications. However, the fabrication of such objects presents challenges to additive manufacturing (AM) due to the tradeoffs among manufacturable feature resolution, maximum build area, and printing speed. This paper presents a projection-based AM process called hopping light vat photopolymerization (HL-VPP) to address this critical barrier. The key idea of HL-VPP is to synchronize linear scanning projection with a galvo mirror's rotation. The projector moves continuously at a constant speed while periodically rotating a one-axis galvo mirror to compensate for the projector's linear movement so synchronized hopping motion can be achieved. By this means, HL-VPP can simultaneously achieve large-area (over 200 mm), fast-speed (scanning speed of 13.5 mm s-1), and high-resolution (10 µm pixel size) fabrication. The distinguishing characteristic of HL-VPP is that it allows for hundreds of times lower refresh rates without motion blur. Thus, HL-VPP decouples the fabrication efficiency limit imposed by the refresh rate and will enable super-fast curing in the future. This work will significantly advance VPP's use in applications that require macroscale part size with microscale features. The process has been verified by fabricating multiple multiscale objects, including microgrids and biomimetic structures.-
dc.languageeng-
dc.relation.ispartofSmall-
dc.subjectadditive manufacturing-
dc.subjectcomputer vision-
dc.subjecthopping light-
dc.subjectmultiscale-
dc.subjectvat photopolymerization-
dc.titleHopping Light Vat Photopolymerization for Multiscale Fabrication-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/smll.202205784-
dc.identifier.pmid36541744-
dc.identifier.scopuseid_2-s2.0-85144365503-
dc.identifier.volume19-
dc.identifier.issue11-
dc.identifier.spagearticle no. 2205784-
dc.identifier.epagearticle no. 2205784-
dc.identifier.eissn1613-6829-
dc.identifier.isiWOS:000899414100001-

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