XMEMS: Dynamic diffraction gratings by MEMS technology for X-ray imaging applications

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1 Citation (Scopus)

Abstract

Grating-based intereferometry is a method used in X-ray phase-contrast imaging to visualize details in transparent objects that are hard to resolve in absorption contrast. Phase shifts introduced into the propagating X-ray wavefront are translated into intensity variations by comparing changes in the interference patterns produced by diffraction gratings. Diffraction gratings and the interference pattern they produce are typically considered static. Using MEMStechnology, the gratings can be actuated such that, e.g., their internal structure can be varied. By driving the gratings into resonance, it is possible to obtain modulated, dynamic interference patterns. By demodulating the time-varying signals from the detector pixels, useful object-related phase-contrast information can be differentiated from the static background and noise. The method, thus, allows low-dose imaging of organic specimens with improved contrast and reduced noise.

Original languageEnglish
Title of host publication26th European Conference on Solid-State Transducers, EUROSENSOR 2012
PublisherElsevier
Pages277-280
Number of pages4
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event26th European Conference on Solid-State Transducers, EUROSENSOR 2012 - Krakow, Poland
Duration: 9 Sep 201212 Sep 2012

Publication series

NameProcedia Engineering
PublisherElsevier
Volume47
ISSN (Print)1877-7058

Conference

Conference26th European Conference on Solid-State Transducers, EUROSENSOR 2012
CountryPoland
CityKrakow
Period9/09/1212/09/12

Keywords

  • Comb drive
  • Grating
  • Interferometry
  • Mems
  • Micromechanical
  • Phase constrast
  • X-ray

Cite this

Gorelick, S. (2012). XMEMS: Dynamic diffraction gratings by MEMS technology for X-ray imaging applications. In 26th European Conference on Solid-State Transducers, EUROSENSOR 2012 (pp. 277-280). (Procedia Engineering; Vol. 47). Elsevier. https://doi.org/10.1016/j.proeng.2012.09.137