NAWI Physics Doctoral Seminar Winter 2010


Tuesday 05 October 2010      KFU

16:00 - 17:00

Organizational meeting
M. Ramsey / P. Pölt


Tuesday 19 October 2010      KFU

16:00 - 17:00

Structural and Morphological Characterization of an Organic Multilayer Photodiode with X-ray Scattering Techniques, SEM and AFM
Alfred Neuhold, TUG

Organic opto-electronic devices such as light emitting devices as well as organic photodiodes (OPDs) are generally constructed by sandwiching organic thin films between two metal electrodes. The growth of the different layers on top of each other occurs in a specific manner. In o ... more


Tuesday 09 November 2010      TUG

16:15 - 17:15

Decrypting the Mechanical Properties of Paper
Eduard Gilli, TUG

Paper as a functional material is known and used for about 4000 years. However, little is known today about the microscopic mechanisms of the bonding of individual paper fibers. This is the key knowledge for further improvement of paper properties.

Within the framewo ... more


Tuesday 16 November 2010      TUG

16:15 - 17:15

Modelling low frequeny waves in Tokamak plasmas
Miran Mulec, TUG

In recent studies of the interaction of low frequency resonant magnetic field perturbations it was demonstrated that Magnetohydrodynamic theory (MHD) has strong limitations in its applicability for modern Tokamak parameter range. MHD instabilities resulting from perturbed MHD p ... more


Tuesday 23 November 2010      KFU

16:00 - 17:00

The influence of nanometric surface morphology on surface plasmon resonances and surface enhanced effects on gold nanoparticles
Jean-Claude Tinguely,

Plasmonics is a booming field with numerous applications ranging from optical data processing over negative-refraction materials to bio-sensors. To achieve a better tuning and understanding of the plasmonic effect, an addressing of the surface roughness influence at localized sur ... more


Tuesday 30 November 2010      KFU

16:00 - 17:00

Surface spin-glass freezing and interparticle interactions in ferrite nanoparticles
Kashif Nadeem, KFU

The magnetic phases of surface and core spins of small-sized nanomagnets are in the focus of current intense research. The magnetic order of the surface spins of a nanoparticle influences substantially the magnetic properties of the entire particle. The surface to volume ratio is ... more


Tuesday 14 December 2010      TUG

16:00 - 17:00

Organic thin film-transistors – fundamentals and recent results
Simon J. Ausserlechner, TUG

Field effect transistors (FETs) especially metal-oxide-semiconductor FETs (MOS-FETs) are the central type of devices in modern microelectronics. Since the 1970s organic transistors have been studied as an interesting alternative. Typically, they are realized as thin-film transist ... more


Tuesday 11 January 2011      TUG

16:15 - 17:15

Controlling device properties in Organic Thin Film Transistors (OTFTs) by the application of Organic Photoreactive Interfacial Layers
Marco Marchl, TUG

The charge carrier mobility and the threshold voltage are crucial device parameters of Organic Thin Film Transistors (OTFTs). In this presentation, we present an approach to photochemically tune those properties using photoreactive polymers between the SiO2 surface and the active ... more


Tuesday 18 January 2011      KFU

16:00 - 17:00

Grazing Incidence X-Ray Diffraction to Characterize Organic Thin Films
Armin Moser

Grazing incidence x-ray diffraction is a powerful tool to investigate crystallographic structures of thin organic films. In these films organic molecules have a tendency to form crystal structures that differ from the bulk equilibrium structures, i.e. structures of macroscopic si ... more
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