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Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation

Four-dimensional phase computed tomography (4D phase CT) by an X-ray Talbot interferometer (XTI) with white synchrotron radiation has ever been demonstrated at a temporal resolution of about 1 s for soft-matter samples. However, the radiation damage to samples caused by white synchrotron radiation o...

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Autores principales: Vegso, Karol, Wu, Yanlin, Takano, Hidekazu, Hoshino, Masato, Momose, Atsushi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6531456/
https://www.ncbi.nlm.nih.gov/pubmed/31118428
http://dx.doi.org/10.1038/s41598-019-43589-6
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author Vegso, Karol
Wu, Yanlin
Takano, Hidekazu
Hoshino, Masato
Momose, Atsushi
author_facet Vegso, Karol
Wu, Yanlin
Takano, Hidekazu
Hoshino, Masato
Momose, Atsushi
author_sort Vegso, Karol
collection PubMed
description Four-dimensional phase computed tomography (4D phase CT) by an X-ray Talbot interferometer (XTI) with white synchrotron radiation has ever been demonstrated at a temporal resolution of about 1 s for soft-matter samples. However, the radiation damage to samples caused by white synchrotron radiation occasionally hampers our understanding of the sample dynamical properties. Based on the fact that XTI functions with X-rays of a bandwidth up to ca. 10% with performance comparable to that by monochromatic X-rays, filtering white synchrotron radiation to generate a ‘pink-beam’ of a 10% bandwidth is effective to reduce radiation damage without degrading the image quality and temporal resolution. We have therefore developed pink-beam 4D phase CT at SPring-8, Japan by installing a multilayer mirror with a 10% bandwidth and a 25 keV central photon energy. XTI optimal at this photon energy was built downstream, and a CMOS-based X-ray detector was used to achieve fast image acquisitions with an exposure time of 1 ms (or 0.5 ms) per moiré image. The resultant temporal resolution of pink-beam 4D phase CT was 2 s (1 s). We applied the pink-beam 4D phase CT to in-situ observation of polypropylene, poly(methyl methacrylate), and polycarbonate under infrared laser irradiation (1064 nm). The dynamics of melting, bubbling, and ashing were successfully visualized in 3D movies without problematic radiation damage by synchrotron radiation.
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spelling pubmed-65314562019-05-30 Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation Vegso, Karol Wu, Yanlin Takano, Hidekazu Hoshino, Masato Momose, Atsushi Sci Rep Article Four-dimensional phase computed tomography (4D phase CT) by an X-ray Talbot interferometer (XTI) with white synchrotron radiation has ever been demonstrated at a temporal resolution of about 1 s for soft-matter samples. However, the radiation damage to samples caused by white synchrotron radiation occasionally hampers our understanding of the sample dynamical properties. Based on the fact that XTI functions with X-rays of a bandwidth up to ca. 10% with performance comparable to that by monochromatic X-rays, filtering white synchrotron radiation to generate a ‘pink-beam’ of a 10% bandwidth is effective to reduce radiation damage without degrading the image quality and temporal resolution. We have therefore developed pink-beam 4D phase CT at SPring-8, Japan by installing a multilayer mirror with a 10% bandwidth and a 25 keV central photon energy. XTI optimal at this photon energy was built downstream, and a CMOS-based X-ray detector was used to achieve fast image acquisitions with an exposure time of 1 ms (or 0.5 ms) per moiré image. The resultant temporal resolution of pink-beam 4D phase CT was 2 s (1 s). We applied the pink-beam 4D phase CT to in-situ observation of polypropylene, poly(methyl methacrylate), and polycarbonate under infrared laser irradiation (1064 nm). The dynamics of melting, bubbling, and ashing were successfully visualized in 3D movies without problematic radiation damage by synchrotron radiation. Nature Publishing Group UK 2019-05-22 /pmc/articles/PMC6531456/ /pubmed/31118428 http://dx.doi.org/10.1038/s41598-019-43589-6 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Vegso, Karol
Wu, Yanlin
Takano, Hidekazu
Hoshino, Masato
Momose, Atsushi
Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation
title Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation
title_full Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation
title_fullStr Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation
title_full_unstemmed Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation
title_short Development of pink-beam 4D phase CT for in-situ observation of polymers under infrared laser irradiation
title_sort development of pink-beam 4d phase ct for in-situ observation of polymers under infrared laser irradiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6531456/
https://www.ncbi.nlm.nih.gov/pubmed/31118428
http://dx.doi.org/10.1038/s41598-019-43589-6
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