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Grid-enhanced X-ray coded aperture microscopy with polycapillary optics

Sowa, Katarzyna M.; Last, Arndt; Korecki, Paweł

Polycapillary devices focus X-rays by means of multiple reflections of X-rays in arrays of bent glass capillaries. The size of the focal spot (typically 10–100 μm) limits the resolution of scanning, absorption and phase-contrast X-ray imaging using these devices. At the expense of a moderate resolution, polycapillary elements provide high intensity and are frequently used for X-ray micro-imaging with both synchrotrons and X-ray tubes. Recent studies have shown that the internal microstructure of such an optics can be used as a coded aperture that encodes high-resolution information about objects located inside the focal spot. However, further improvements to this variant of X-ray microscopy will require the challenging fabrication of tailored devices with a well-defined capillary microstructure. Here, we show that submicron coded aperture microscopy can be realized using a periodic grid that is placed at the output surface of a polycapillary optics. Grid-enhanced X-ray coded aperture microscopy with polycapillary optics does not rely on the specific microstructure of the optics but rather takes advantage only of its focusing properties. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000068610
Veröffentlicht am 16.03.2018
DOI: 10.1038/srep44944
Zitationen: 4
Web of Science
Zitationen: 3
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 2045-2322
KITopen-ID: 1000068610
HGF-Programm 43.23.02 (POF III, LK 01)
Erschienen in Scientific reports
Band 7
Seiten Art.Nr.: 44944
Schlagworte Microscopy, X-ray
Nachgewiesen in Scopus
Web of Science
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