Physics Colloquium: Giuseppe Portale - Structure and dynamics of polymeric systems in thin films observed by GISAXS
|When:||Th 24-09-2015 16:00 - 17:00|
|Where:||Nijenborgh 4 Room 5111.0080|
A large number of technological applications in industrial, biomedical and renewable energy sectors are based on the use of thin polymer films. Device fabrication usually require thin polymer films with thickness in the range of 10 ‐ 200 nm. Beside TEM and AFM, Grazing Incidence X ‐ray Scattering (GISAXS) is a powerful tool to study thin polymer films as it provides simultaneous in ‐ lane and out ‐of plane structural information and gives the possibility to perform real time measurements. In this talk, I will show our recent advances in the understanding of phase separation and assembly in polymer thin films performing both static and dynamic GISAXS measurements.
In particular I will discuss a) the possibility to assemble 1 ‐D structures of polymer ‐Au core ‐ hell nanoparticles onto glass, and how their structure is appealing for plasmonic solar cells, and b) ultrafast GISAXS investigation of phase separation during spin coating of a PS:PCBM polymer blend.
The experimental results obtained are unique and together with modelling provide fundamental knowledge of polymeric materials in thin films.
Host: Prof.dr. K.U. Loos
Doors open and coffee available at 15:30 h