Author
Killian J. Barton
Bio: Killian J. Barton is an academic researcher from Cork Institute of Technology. The author has contributed to research in topics: Coating & Raman scattering. The author has an hindex of 2, co-authored 4 publications receiving 13 citations.
Papers
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17 citations
TL;DR: A low-cost multispectral imager was built using a multiwavelength LED PCB, 3D printed housing, and a monochrome camera, and it was controlled via Nation.
Abstract: A low-cost multispectral imager was built using a multiwavelength LED PCB (light-emitting diode printed circuit board), 3D printed housing, and a monochrome camera, and it was controlled via Nation...
4 citations
TL;DR: A prototype IR transmission microscope is presented to evaluate micron-level coating coverage of polyurethane and/or polyvinylpyrrolidone on a poly(propylene)-based delivery device and the industrial applicability of the prototype was demonstrated using comparisons with dye stain analysis by estimating water dilution of coating and identifying artifacts in coating, which may indicate machine malfunction.
Abstract: Transparent polymer delivery devices often contain a solid lubricant coating on a stronger bulk polymer. The distribution of lubricant coating must be monitored for device optimisation appraisals and to ensure consistency during mass production. However, coating evaluation is difficult to perform as surfaces are often concealed and/or disjointed. Dye stain analysis, which is destructive and time-consuming, is the current industry standard. We present a prototype IR transmission microscope to evaluate micron-level coating coverage of polyurethane and/or polyvinylpyrrolidone on a poly(propylene)-based delivery device. The device has a common industrial configuration, containing a duct and bevel. Inferred absorption of the coating was used to identify coating coverage and a multivariate analysis was used to remove the effects of absorption and scattering by the bulk. Coverage on concealed and disjointed surfaces was imaged and evaluated from a single camera viewpoint and ≈50 μm defects were detectable. The industrial applicability of the prototype was demonstrated using comparisons with dye stain analysis by estimating water dilution of coating and identifying artifacts in coating, which may indicate machine malfunction. The sensitivity and speed of the IR technique makes it a favourable alternative to the current industry standard.
3 citations
01 Sep 2019
TL;DR: A prototype system which determines defects in thin film coatings, a few micron thick, of polyurethane and/or polyvinylpyrrolidone concealed on the inner surface of a polypropylene tube is described.
Abstract: We describe a prototype system which determines defects in thin film coatings, a few micron thick, of polyurethane (PU) and/or polyvinylpyrrolidone (PVP) concealed on the inner surface of a polypropylene tube. The tubing cross-section is several millimeters and has a wall thickness of 200 μm. Inferred absorption of the coating is used to identify the coating coverage and a multivariate analysis is used to remove the effects of absorption and scattering by the tubing wall. We demonstrate the application of the technique to an industry need for measuring defects in medical device manufacture.
1 citations
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Journal Article•
325 citations
19 Aug 2021
19 citations
TL;DR: In this article, the authors developed and compared two approaches, (i) Raman imaging, combined with logic-based and principal component analysis (PCA)-based algorithms, and (ii) matrix-assisted laser desorption/ionisation-mass spectrometry (MALDI-MS).
13 citations
TL;DR: In this paper , the authors developed and compared two approaches, (i) Raman imaging, combined with logic-based and principal component analysis (PCA)-based algorithms, and (ii) matrix-assisted laser desorption/ionisation-mass spectrometry (MALDI-MS).
13 citations
01 Jan 2020
TL;DR: This review paper covers the forensic-relevant literature in questioned documents from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium.
Abstract: This review paper covers the forensic-relevant literature in questioned documents from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol Review Papers 2019.pdf .
12 citations