Abstract
Methods of coherent X-ray diffraction imaging of the spatial structure of noncrystalline objects and nanocrystals (nanostructures) are considered. Particular attention is paid to the methods of scanning-based coherent diffraction imaging (ptychography), visualization based on coherent surface scattering with application of correlation spectroscopy approaches, and specific features of visualization using X-ray free-electron laser radiation. The corresponding data in the literature are analyzed to demonstrate the state of the art of the methods of coherent diffraction imaging and fields of their application.
Highlights
The enhanced brightness [143] and time structure with specific 100 fs pulse is a characteristic feature of X-ray free-electron lasers (XFELs), which casts a new look at the possibilities of X-ray time-resolved experiment
The methods of coherent diffraction imaging considered in this review were elaborated and are being actively developed because new synchrotron radiation (SR) sources of the 3+ and fourth generations and XFEL are being put into operation
These sources, due to their brightness, small emittance, and temporal structure open up new horizons for X-ray diffraction studies and materials science
Summary
In this case the linear sizes of sample studied exceed the transverse sizes of incident X-ray beam. The schematic of CDI in the Bragg geometry (Fig. 1c) is similar to that presented, but a diffraction pattern is recorded in the vicinity of Bragg reflection in the case of crystalline object (nanoscale structures, nanocrystals, etc.). A distinctive feature of the CDI approach in Fresnel approximation is the use of an incident wave with a specified wavefront curvature It was shown in [50, 51] that, when a wave with a known (finite) curvature is incident on a sample, there is a single solution to the problem of structure reconstruction for the object studied. An image of a standard sample with a resolution of 20 nm was reconstructed in a similar way in [53]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
