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Träfflista för sökning "WFRF:(Ayyer Kartik) srt2:(2021)"

Sökning: WFRF:(Ayyer Kartik) > (2021)

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1.
  • Ayyer, Kartik, et al. (författare)
  • 3D diffractive imaging of nanoparticle ensembles using an x-ray laser
  • 2021
  • Ingår i: Optica. - : Optical Society of America. - 2334-2536. ; 8:1, s. 15-23
  • Tidskriftsartikel (refereegranskat)abstract
    • Single particle imaging at x-ray free electron lasers (XFELs) has the potential to determine the structure and dynamics of single biomolecules at room temperature. Two major hurdles have prevented this potential from being reached, namely, the collection of sufficient high-quality diffraction patterns and robust computational purification to overcome structural heterogeneity. We report the breaking of both of these barriers using gold nanoparticle test samples, recording around 10 million diffraction patterns at the European XFEL and structurally and orientationally sorting the patterns to obtain better than 3-nm-resolution 3D reconstructions for each of four samples. With these new developments, integrating advancements in x-ray sources, fast-framing detectors, efficient sample delivery, and data analysis algorithms, we illuminate the path towards sub-nano meter biomolecular imaging. The methods developed here can also be extended to characterize ensembles that are inherently diverse to obtain their full structural landscape. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
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2.
  • Prasciolu, Mauro, et al. (författare)
  • On the use of multilayer Laue lenses with X-ray free electron lasers
  • 2021
  • Ingår i: International Conference on X-Ray Lasers 2020. - : SPIE. - 0277-786X .- 1996-756X. - 9781510646186 ; 11886
  • Konferensbidrag (refereegranskat)abstract
    • We report on the use of multilayer Laue lenses to focus the intense X-ray Free Electron Laser (XFEL) beam at the European XFEL to a spot size of a few tens of nanometers. We present the procedure to align and characterize these lenses and discuss challenges working with the pulse trains from this unique X-ray source.
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