Reaching the third dimension

Journal Article · Wed Jan 25 04:00:00 UTC 2017 · Nature Materials

DOI: https://doi.org/10.1038/nmat4845 · OSTI ID:1344222

Robinson, Ian; Huang, Xiaojing

X-ray imaging is extensively used in medical and materials science. Traditionally, the depth dimension is obtained by turning the sample to gain different views. The famous penetrating properties of X-rays mean that projection views of the subject sample can be readily obtained in the linear absorption regime. 180 degrees of projections can then be combined using computed tomography (CT) methods to obtain a full 3D image, a technique extensively used in medical imaging. In the work now presented in Nature Materials, Stephan Hruszkewycz and colleagues have demonstrated genuine 3D imaging by a new method called 3D Bragg projection ptychography1. Our approach combines the 'side view' capability of using Bragg diffraction from a crystalline sample with the coherence capabilities of ptychography. Thus, it results in a 3D image from a 2D raster scan of a coherent beam across a sample that does not have to be rotated.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: SC0012704
• OSTI ID: 1344222
• Report Number(s): BNL--113299-2016-JA; KC0201060
• Journal Information: Nature Materials, Journal Name: Nature Materials Journal Issue: 2 Vol. 16; ISSN 1476-1122
• Publisher: Springer Nature - Nature Publishing GroupCopyright Statement
• Country of Publication: United States
• Language: English