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SUMMARY:IMX Talks - X-ray scattering and imaging for hierarchical material
 s
DTSTART:20210311T100000
DTEND:20210311T110000
DTSTAMP:20260925T112225Z
UID:77291148f34aeaf60ffb801754cf87e30d966b4b35b32e6cc0f394ed
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Marianne Liebi\, Chalmers University of Technology\, Swe
 den\nMicroscopy in scanning mode allows to image different contrasts from 
 the sample\, by probing not only absorption and phase contrast of the samp
 le but for example a full X-ray fluorescence spectrum or a 2D scattering p
 attern. Small- and wide-angle X-ray scattering (SAXS/WAXS) imaging is in p
 articular valuable for heterogeneous samples\, in which structural element
 s in the nano- or Ångström-scale change over macroscopic length scales\,
  thus several millimeters or centimeters. The scattering patterns provide 
 statistical information in each scan point\, thus this method is complemen
 tary to high-resolution imaging techniques. The information extracted from
  each scattering pattern can be used to create images with different contr
 ast\, such as density of nano-scale features or orientation of nanostructu
 res. These methods can also be combined with computed tomography to study 
 the inside of three-dimensional samples\, as shown on the example of bone 
 in Figure 1. A range of applications will be shown from biological tissues
  to various soft-matter systems. Linking for example the structural layers
  induced by the injection-molding process in semi-crystalline polymers use
 d in food packaging industry to their anisotropic mechanical properties. C
 ombining SAXS imaging with microfluidics extends the method from imaging s
 olid sample to mapping of nanostructures in flow.\nBio: Marianne Liebi is 
 Adjunct Associate Professor in Materials Science in the Department of Phys
 ics at the Chalmers University of Technology\, and Scientific Group Leader
  in the Center for X-ray Analytics at Empa\, St.Gallen since August 2020. 
 She started her own research group in 2017 as Assistant Professor at the C
 halmers University of Technology and became Docent in Physics in spring 20
 20. The focus of her research is in the development of advanced X-ray imag
 ing techniques and their application towards materials with hierarchical s
 tructures. Her main expertise is small-angle X-ray scattering (SAXS) imagi
 ng in 2D and 3D\, but include other imaging modalities such as ptychograph
 ic nanotomography\, X-ray fluorescence or phase contrast tomography. With 
 a background in food science\, she started using small-angle neutron scatt
 ering (SANS) for the characterization of soft-matter\, namely of magnetic 
 alignable self-assembly structures during her PhD\, received from ETH Zuri
 ch\, Switzerland in 2013. As a Post Doc in the coherent X-ray scattering g
 roup at the Swiss Light Source (SLS)\, she worked from 2013-2016 on method
  development in SAXS imaging\, and from 2016-2017  at the NanoMAX beamlin
 e at the MAX IV Laboratory\, in Lund Sweden.\n 
LOCATION:https://epfl.zoom.us/j/83355821457
STATUS:CONFIRMED
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