Experimental Nanophysics

 

Prof. Dag Werner Breiby

 

 

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! Master projects 2019 will soon be announced !

 

 

Scientific interests:

 

We are highly interested in the development of coherent X-ray diffraction imaging (CXDI) techniques, which is a lensless imaging technique based on iterative phase reconstruction from diffraction images. CXDI, including ptychography, can be performed under relevant/realistic conditions, including high temperatures and high gas pressures. Efforts are thus made to perform in situ imaging experiments with a resolution approaching 10 nm, in collaboration with the coherent scattering groups at the Swiss Light Source in Villigen outside Zürich and at the European Synchrotron Radiation Facility (ESRF) in Grenoble. We are also increasingly working in the optical domain with computational microscopy methods, in particular Fourier Ptychography.

 

Another line of research is Computational Tomography (CT) which we perform on a wide range of materials, both using our Nikon HT 220 micro-CT scanner, and synchrotron beamlines like TOMCAT at SLS and ID19 at ESRF. Efforts are put into developing schemes for dynamic CT.

 

Sample systems of particular interest are porous materials, ranging from mesoporous thin films, via foams, to cement and rocks (notably sandstone and shales).

 

Fundamental structure-properties studies of functional organic materials, mainly polymers, but also small molecules and liquid crystals have been my main research theme. Our main tools are X-ray diffraction and imaging, and the investigations are usually combined with other experimental or theoretical efforts to yield insight into how materials behave the way they do. A typical example would be correlating charge-carrier mobility in field-effect transistors with thin-film structures in organic electronics. The work we do on organic electronics has attracted wide-spread attention, and we are collaborating with many of the leading groups in the world in this field, cf. list of publications.

 

We are frequent users of synchrotron radiation, mainly at SLS, HASYLAB and ESRF. GISAXS / GIWAXS are important techniques for revealing structures in thin films, and we have developed considerable expertise in collecting, interpreting and modeling this kind of data, increasingly often in collaboration with experts on density functional theory.

 

The group is generally interested in microsystems (MEMS), and is collaborating with the nationally leading institutions (Vestfold University College) in this field.

 

Visiting Trondheim?

 

Short CV

 

 

 

Recent Funding:

 

 

Project

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4D-CT (RCN:FRINATEK)

 

COMPMIC (RCN: SYNKNØYT)

 

CuttingEdge (RCN: PETROMAKS2)

 

CO2PLUG (RCN: CLIMIT)

 

RECX - National research infrastructure for X-ray scattering and imaging

(RCN: INFRASTRUKTUR)

 

Towards coherent imaging of working catalyst nanoparticles

(RCN: SYNKROTRON)

 

ColdWear (RCN: KMB)

 

Expériences et simulation de clichés GISAXS de films minces mésoporeux ou fonctionnalisé  (RCN: Aurora)

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RAtional DEsign of blends for bulk heterojunction SOLar cells - RADESOL (M-ERA.NET)

 

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ColdWear