Rapid prototyping-coded masks for x-ray backscatter imaging

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dc.contributor.author Munoz, Andre Arelius Marcus
dc.contributor.author Vella, Anna
dc.contributor.author Healy, Matthew J. F.
dc.contributor.author Lane, David W.
dc.date.accessioned 2019-11-29T11:16:08Z
dc.date.available 2019-11-29T11:16:08Z
dc.date.issued 2018-08-22
dc.identifier.citation Munoz AAM, Vella A, Healy MJF, et al., Rapid prototyping-coded masks for x-ray backscatter imaging. Optical Engineering, Volume 57, Issue 8, August 2018, Article number 085104 en_UK
dc.identifier.issn 0091-3286
dc.identifier.uri https://doi.org/10.1117/1.OE.57.8.085104
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/14782
dc.description.abstract Coded masks (CM) often lack a self-supporting structure that is difficult to manufacture without recourse to drilled holes in place of ideal square apertures, degrading imaging properties. An alternative approach is presented with three-dimensional (3-D) printed CM molds cast with a radio-opaque material that allows square elements to be retained. Two methods are presented; hot casting a bismuth alloy (density 8.6  g cm  −  3) and cold casting with tungsten powder/epoxy resin (densities 9.6 and 10.6  g cm  −  3). A critical review of 3-D printed-CM fabrication along with some typical x-ray backscatter images is presented. A signal-to-noise ratio from both the machined tungsten and cold cast 3-D printed mask were comparable, with the former having a slight advantage. Also, 3-D printed cold cast masks were found to be more economical and easier to rapid prototype over traditional drilled tungsten masks. en_UK
dc.language.iso en en_UK
dc.rights Attribution-NonCommercial 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc/4.0/ *
dc.subject coded apertures en_UK
dc.subject coded masks en_UK
dc.subject x-ray backscatter en_UK
dc.subject three-dimensional printing en_UK
dc.title Rapid prototyping-coded masks for x-ray backscatter imaging en_UK
dc.type Article en_UK
dc.identifier.cris 21309832

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