SZFI Hírek

Femtosecond X-ray Fourier holography imaging of free-flying nanoparticles

Tais Gorkhover et al. including G. Faigel
Nature Photonics 12 150–153

© Nature Photonics, 2018

Ultrafast X-ray imaging on individual fragile specimens such as aerosols1, metastable particles2, superfluid quantum systems3 and live biospecimens4 provides high-resolution information that is inaccessible with conventional imaging techniques. Coherent X-ray diffractive imaging, however, suffers from intrinsic loss of phase, and therefore structure recovery is often complicated and not always uniquely defined4,5. Here, we introduce the method of in-flight holography, where we use nanoclusters as reference X-ray scatterers to encode relative phase information into diffraction patterns of a virus. The resulting hologram contains an unambiguous three-dimensional map of a virus and two nanoclusters with the highest lateral resolution so far achieved via single shot X-ray holography. Our approach unlocks the benefits of holography for ultrafast X-ray imaging of nanoscale, non-periodic systems and paves the way to direct observation of complex electron dynamics down to the attosecond timescale.

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Beküldte: NOVA Admin, 2018. 03. 07. 12.16,   Hír típusa: Cikk,   Megtekintve: 568 alkalommal