Open Access

The neutron single crystal diffractometer BIODIFF at the research reactor Heinz Maier-Leibnitz (FRM II) is especially designed to collect data from crystals with large unit cells. The main field of application is the structural analysis of proteins, especially the determination of hydrogen atom positions. [...]

What is often well established at many synchrotron beam lines is still in the development phase at neutron beam lines: In-situ light scattering techniques. The science case for in-situ light scattering at neutron instruments lies mostly in the limited reproducibility of sample preparation and stability of the samples over time. [...]

With the advent of new instruments (e. g. [...]

Electronic devices with nonlinear current-voltage characteristics can be used as mixers in receivers for frequency downconversion. Mixers based onsuperconductors show high conversion efficiencies and low noise. [...]

We present ab-initio electronic structure calculations of the electronic propertiesof impurities on metallic surfaces in the framework of the local density approximationbased on the Greens function approach proposed by Korringa, Kohn and Rostoker(KKR). Motivated by the results of scanning tunneling microscope experiments(STM) of Cr-atoms on the (001) surface of Iron, we study in the first part of thisreport the properties of $\textit{3d}$-impurities on the Fe(001) surface. [...]

The thesis presented here describes the application of intense, pulsed X-rays from a synchrotron to the investigation of biochemical reactions triggered by light. The workincludes contributions to the instrumentation of a beamline and experiments with the proteins myoglobin, the photoactive yellow protein (PYP) and bacteriorhodopsin.The instrumentational work led to an improvement of the time resolution for pulsed Laue experiments from 10 ns to 100 ps. [...]

The adhesion of wear resistant coatings with predominant covalent bond content is limited byhigh stresses of the layers and by the weak chemial interaction between the metallic substrateand the covalent top layer. One essential aim of this work was the investigation of the structure and properties of a-C:H layers on several interlayer materials (Al, Ti, Cr,Cu). [...]

The amorphization and crystallization process of Ge$_{2}$Sb$_{2}$Te$_{5}$ is characterized. This alloyis used for optical data storage utilizing laser induced structural phase transitions. [...]

The main task in the field of turbine development is the increase of their life-time andefficiency and the reduction of toxic emissions. These can be achieved by raising the hot gasinlet temperature. [...]