Anti-reflection coatings on 3D printed components

Canning, J; Clark, C; Dayao, M; LaMela, D; Logozzo, M; Zhao, J

Anti-reflection coatings on 3D printed components

Canning, J

Clark, C Dayao, M LaMela, D Logozzo, M Zhao, J

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Publisher:: MDPI AG
Publication Type:: Journal Article
Citation:: Coatings, 2021, 11, (12), pp. 1-10
Issue Date:: 2021-12-25

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Field	Value	Language
dc.contributor.author	Canning, J https://orcid.org/0000-0001-8281-7783
dc.contributor.author	Clark, C
dc.contributor.author	Dayao, M
dc.contributor.author	LaMela, D
dc.contributor.author	Logozzo, M
dc.contributor.author	Zhao, J
dc.date.accessioned	2022-03-12T22:23:28Z
dc.date.available	2022-03-12T22:23:28Z
dc.date.issued	2021-12-25
dc.identifier.citation	Coatings, 2021, 11, (12), pp. 1-10
dc.identifier.issn	2079-6412
dc.identifier.issn	2079-6412
dc.identifier.uri	http://hdl.handle.net/10453/155177
dc.description.abstract	The use of anti-reflection coatings on 3D-printed components to reduce both Fresnel reflections and scattering is explored. Two similar photo-initiated acrylic commercial material structures, known as Standard Clear (SC: T~60% @ λ = 800 nm) and VeroClear (VC: T~90% @ λ = 800 nm), used specifically for optical components, are examined. The refractive indices for slab samples~(5 × 5 × 0.7) cm are measured at λ = 650 nm and averaged over the slab area: n(SC)~(1.49 ± 0.04) and n(VC)~(1.42 ± 0.03). Within experimental error, novel Shore D mapping is used to show hardness distribution across the surface flats, with VC slightly harder than SC, where VC = 85.9 ± 0.3 and SC = 84.4 ± 1.3, indicating uniform hardness. A TiO2/MgF2 anti-reflection twin-layer coating is deposited onto one side of an unpolished SC slab and binds well, passing standard peeling and humidity tests. Shore hardness increases to SCCOATED = 87.5 ± 1.5. It is found to reduce the measured Fresnel reflection and surface scatter by~65% without requiring major polishing, paving the way for lower-cost high-quality optics. The demonstration of successful anti-reflection coatings will benefit all 3D-printed component finishes, permitting viable film deposition more broadly.
dc.language	en
dc.publisher	MDPI AG
dc.relation	Air Force Office of Scientific ResearchFA2386-16-1-4031
dc.relation.ispartof	Coatings
dc.relation.isbasedon	10.3390/coatings11121519
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0306 Physical Chemistry (incl. Structural), 0904 Chemical Engineering, 0912 Materials Engineering
dc.title	Anti-reflection coatings on 3D printed components
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0306 Physical Chemistry (incl. Structural)
utslib.for	0904 Chemical Engineering
utslib.for	0912 Materials Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-03-12T22:23:25Z
pubs.issue	12
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	12

Abstract:

The use of anti-reflection coatings on 3D-printed components to reduce both Fresnel reflections and scattering is explored. Two similar photo-initiated acrylic commercial material structures, known as Standard Clear (SC: T~60% @ λ = 800 nm) and VeroClear (VC: T~90% @ λ = 800 nm), used specifically for optical components, are examined. The refractive indices for slab samples~(5 × 5 × 0.7) cm are measured at λ = 650 nm and averaged over the slab area: n(SC)~(1.49 ± 0.04) and n(VC)~(1.42 ± 0.03). Within experimental error, novel Shore D mapping is used to show hardness distribution across the surface flats, with VC slightly harder than SC, where VC = 85.9 ± 0.3 and SC = 84.4 ± 1.3, indicating uniform hardness. A TiO2/MgF2 anti-reflection twin-layer coating is deposited onto one side of an unpolished SC slab and binds well, passing standard peeling and humidity tests. Shore hardness increases to SCCOATED = 87.5 ± 1.5. It is found to reduce the measured Fresnel reflection and surface scatter by~65% without requiring major polishing, paving the way for lower-cost high-quality optics. The demonstration of successful anti-reflection coatings will benefit all 3D-printed component finishes, permitting viable film deposition more broadly.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/155177