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Dr Charan Kuppili, Dept of Earh Sciences, Uni of Cambridge
Thursday 10 October 2019, 11:30-12:30
Ptychotomographic imaging of nano-materials at I13-1 Diamond Light Source
- 👤 Speaker: Dr Charan Kuppili, Dept of Earh Sciences, Uni of Cambridge
- 📅 Date & Time: Thursday 10 October 2019, 11:30 - 12:30
- 📍 Venue: Open Plan Area, BP Institute, Madingley Rise CB3 0EZ
Abstract
Ptychography is a lensless X-ray diffraction microscopy technique [1,2] in which the sample is scanned at pre-defined positions collecting far-field diffraction patterns at each of these scanning positions. The diffraction patterns along with the information regarding the scan positions are then processed using iterative phase retrieval algorithms resulting in high resolution complex transmission function of the sample. The complex X-ray probe function incident on the sample is also reconstructed along with the sample’s transmission function [2]. Ptychography can be combined with tomography in order to obtain high resolution, phase contrast 3D transmission function of the sample [5]. Ptychography has shown to be capable of achieving high 2D ( 17 nm [3]) as well as 3D (16 nm [4]) resolutions.
Series This talk is part of the Institute for Energy and Environmental Flows (IEEF) series.
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