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Circular Unit Cell Gratings for X-ray Dark-Field Imaging

Kagias, Matias LU orcid ; Pandeshwar, Amogha ; Wang, Zhentian ; Villanueva-Perez, Pablo LU orcid ; Jefimovs, Konstantins and Stampanoni, Marco (2017) 13th International X-ray Microscopy Conference, XRM 2016 In Journal of Physics: Conference Series 849.
Abstract

Dark-field imaging has been demonstrated to provide complementary information about the unresolved microstructure of the investigated sample. The usual implementation of a grating interferometer, which can provide access to the dark-field signal, consists of linear gratings limiting the sensitivity to only one direction (perpendicular to the grating lines). Recently, a novel grating design, composed of circular unit cells, was proposed allowing 2D-omnidirectional dark-field sensitivity in a single shot. In this work we present a further optimisation of the proposed grating by changing the arrangement of the unit cells from a Cartesian to a hexagonal grid. We experimentally compare the two designs and demonstrate that the latter has an... (More)

Dark-field imaging has been demonstrated to provide complementary information about the unresolved microstructure of the investigated sample. The usual implementation of a grating interferometer, which can provide access to the dark-field signal, consists of linear gratings limiting the sensitivity to only one direction (perpendicular to the grating lines). Recently, a novel grating design, composed of circular unit cells, was proposed allowing 2D-omnidirectional dark-field sensitivity in a single shot. In this work we present a further optimisation of the proposed grating by changing the arrangement of the unit cells from a Cartesian to a hexagonal grid. We experimentally compare the two designs and demonstrate that the latter has an improved performance.

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author
; ; ; ; and
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
host publication
Circular Unit Cell Gratings for X-ray Dark-Field Imaging
series title
Journal of Physics: Conference Series
volume
849
edition
1
conference name
13th International X-ray Microscopy Conference, XRM 2016
conference location
Oxford, United Kingdom
conference dates
2016-08-15 - 2016-08-19
external identifiers
  • scopus:85021877830
ISSN
1742-6588
DOI
10.1088/1742-6596/849/1/012053
language
English
LU publication?
no
additional info
Publisher Copyright: © Published under licence by IOP Publishing Ltd.
id
3bec6639-db2f-4dde-a099-4c593f30e62e
date added to LUP
2024-06-30 10:48:58
date last changed
2025-10-14 10:10:47
@inproceedings{3bec6639-db2f-4dde-a099-4c593f30e62e,
  abstract     = {{<p>Dark-field imaging has been demonstrated to provide complementary information about the unresolved microstructure of the investigated sample. The usual implementation of a grating interferometer, which can provide access to the dark-field signal, consists of linear gratings limiting the sensitivity to only one direction (perpendicular to the grating lines). Recently, a novel grating design, composed of circular unit cells, was proposed allowing 2D-omnidirectional dark-field sensitivity in a single shot. In this work we present a further optimisation of the proposed grating by changing the arrangement of the unit cells from a Cartesian to a hexagonal grid. We experimentally compare the two designs and demonstrate that the latter has an improved performance.</p>}},
  author       = {{Kagias, Matias and Pandeshwar, Amogha and Wang, Zhentian and Villanueva-Perez, Pablo and Jefimovs, Konstantins and Stampanoni, Marco}},
  booktitle    = {{Circular Unit Cell Gratings for X-ray Dark-Field Imaging}},
  issn         = {{1742-6588}},
  language     = {{eng}},
  month        = {{06}},
  series       = {{Journal of Physics: Conference Series}},
  title        = {{Circular Unit Cell Gratings for X-ray Dark-Field Imaging}},
  url          = {{http://dx.doi.org/10.1088/1742-6596/849/1/012053}},
  doi          = {{10.1088/1742-6596/849/1/012053}},
  volume       = {{849}},
  year         = {{2017}},
}