Seeing the unimaginable

Joint LINX and NEXMAP seminar at DTU Physics



Seeing the unimaginable 

- using Spin-Echo Small Angle Scattering (SESANS) for resolving structures in the gap between imaging and traditional scattering techniques.


Wim G. Bouwman

Delft University of Technology



SESANS is a new efficient method to measure structures of materials in real space. Structures can be determined over three orders of magnitude in length scale, from 20 nanometer to 20 micrometer, which is an order of magnitude larger than conventional small-angle neutron scattering (SANS). In contrast to traditional scattering methods, the data are taken in real space, rather than reciprocal space, this makes interpretation easier. These properties make SESANS a new powerful tool for the study of structural properties of materials. 

The presentation will outline the fundamentals of the SESANS technique and its implementation and use at instruments in TU Delft and at STFC in the UK. Further, the presentation will highlight how the method can be applied to studies of soft materials relevant for the food industry, such as modern plant-protein based meat substitutes.

About the presenter

In one line we can summarise the academic interest of Wim Bouwman as: Development and application of scattering methods for soft condensed matter

At present he is developing neutron scattering methods for soft condensed matter research at the Delft University of Technology. On the one hand he is building new neutron spin manipulation devices, thinking of new methods, calculating magnetic fields, designing data acquisition strategies and developing data-analysis methods and software. For this work he is well known in the neutron scattering community.

On the other hand he is building sample cells for in situ measurements on food systems and interpreting measurements in collaboration with food scientists at other universities, research institutes and industries. His great interest is to make the neutron scattering techniques accessible to food scientists.

Wim Bouwman is currently visiting DTU Physics as guest researcher.


Wed 11 Dec 19
10:00 - 11:00


DTU Fysik


DTU Physics
Building 311
1st floor/ Lounge