The CoWork webinar series is dedicated to the exploitation of the coherence properties of X-rays for advanced materials characterization, with a special focus on inverse microscopy techniques, such as Coherent Diffraction Imaging (CDI), Ptychography and Holography. It is an introduction to Coherent X-ray imaging methods to facilitate the access to advanced microscopy techniques to new users and it welcomes all researchers intrigued by the spectacular coherence properties of X-rays produced at modern synchrotron sources – of which MAX IV is a first example.
When: Thursday April 8, 15.30 - 16.30
Speaker: Manuel Guizar-Sicairos, Paul Scherrer Institut (PSI), Switzerland
Title: Characterization and mapping of nanostructure using ptychographic 3D nanoscale imaging and small angle X-ray scattering at the cSAXS beamline
Zoom link/registration (Register in advance for this meeting): https://lu-se.zoom.us/meeting/register/u5ElduqtpjgpHdSyhWySYgFjVwxLMCWkj3HD
After registering, you will receive a confirmation email containing information about joining the meeting.
Bio:
Manuel Guizar-Sicairos received his B.Sc. and M.Sc. from the Tecnológico de Monterrey, Mexico, and his Ph.D. from the University of Rochester in 2010. Currently, he is a beamline scientist at the coherent small-angle X-ray scattering (cSAXS) beamline of the Swiss Light Source (SLS) and has coauthored over 100 peer-reviewed publications. His research focuses on the development, advancement, and application of coherent X-ray imaging techniques, in particular on innovations in novel imaging methods and image reconstruction algorithms. Manuel received the 2019 ICO prize and is a Fellow Member of the OSA. He has contributed to novel approaches in X-ray coherent imaging including X-ray holography, to phase retrieval, ptychography, small-angle X-ray scattering, and tomography.
Abstract:
The small wavelength of X-rays offer the opportunity to image or probe structure with very high resolution. This property combined with the high-penetration of photons, with energies on the order of multiple keV, are ideal for nanoscale-resolution imaging in 3D, with important applications for energy functional materials as well as biology. At the cSAXS beamline we use ptychographic nanotomography (PXCT) and imaging SAXS for characterization of nanostructure. For PXCT we develop algorithms and dedicated instrumentation and achieve resolutions in 3D below 20 nm. Ptychography is a coherent imaging technique that benefits directly from the increased coherent flux available in fourth generation sources. It is additionally highly versatile, and can be used with different wavelengths and experimental geometries. Imaging SAXS in 2D and 3D provides statistical information about nanostructure across macroscopic lengthscales, rendering very complementary information to nanotomography. In this talk I will briefly introduce these techniques and highlight recent developments and applications.
Webinar moderators
Members of the organising group.
Please contact either gerardina.carbone@maxiv.lu.se or asa.grunning@linxs.lu.se for any questions.