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DOI: 10.5445/IR/1000081467
Veröffentlicht am 29.03.2018

Development and Characterization of Two-Dimensional Gratings for Single-Shot X-ray Phase-Contrast Imaging

Zakharova, Margarita; Vlnieska, Vitor; Fornasier, Heike; Börner, Martin; Rolo, Tomy dos Santos; Mohr, Jürgen; Kunka, Danays

Abstract (englisch):
Single-shot grating-based phase-contrast imaging techniques offer additional contrast modalities based on the refraction and scattering of X-rays in a robust and versatile configuration. The utilization of a single optical element is possible in such methods, allowing the shortening of the acquisition time and increasing flux efficiency. One of the ways to upgrade single-shot imaging techniques is to utilize customized optical components, such as two-dimensional (2D) X-ray gratings. In this contribution, we present the achievements in the development of 2D gratings with UV lithography and gold electroplating. Absorption gratings represented by periodic free-standing gold pillars with lateral structure sizes from 5 µm to 25 µm and heights from 5 µm to 28 µm have shown a high degree of periodicity and defect-free patterns. Grating performance was tested in a radiographic setup using a self-developed quality assessment algorithm based on the intensity distribution histograms. The algorithm allows the final user to estimate the suitability of a specific grating to be used in a particular setup.

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Institut für Photonenforschung und Synchrotronstrahlung (IPS)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2076-3417
URN: urn:nbn:de:swb:90-814671
KITopen ID: 1000081467
HGF-Programm 43.23.02; LK 01
Erschienen in Applied Sciences
Band 8
Heft 3
Seiten 468
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte 2D gratings; UV lithography; grating-based X-ray imaging; single-shot phase-contrast imaging
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