Complex optical elements for scanning helium microscopy through 3D printing

Title: Complex optical elements for scanning helium microscopy through 3D printing
Creator: Bergin, M.; Myles, T.A.; Radic, A.; Hatchwell, C.J.; Lambrick, S.M.; Ward, D.J.; Eder, S.D.; Fahy, A.; Barr, M.; Dastoor, P.C.
Relation: Journal of Physics D: Applied Physics Vol. 55, Issue 9
Publisher Link: http://dx.doi.org/10.1088/1361-6463/ac3a3e
Publisher: Institute of Physics Publishing
Resource Type: journal article
Date: 2022
Description: Developing the next generation of scanning helium microscopes requires the fabrication of optical elements with complex internal geometries. We show that resin stereolithography (SLA) 3D printing produces low-cost components with the requisite convoluted structures whilst achieving the required vacuum properties, even without in situ baking. As a case study, a redesigned pinhole plate optical element of an existing scanning helium microscope was fabricated using SLA 3D printing. In comparison to the original machined component, the new optical element minimised the key sources of background signal, in particular multiple scattering and the secondary effusive beam.
Subject: 3D print; vacuum; scanning helium microscopy; helium; SDG 9; Sustainable Development Goals
Identifier: http://hdl.handle.net/1959.13/1464836
Identifier: uon:47123
Identifier: ISSN:0022-3727
Language: eng
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