Now showing items 1-10 of 114
Untersuchungen der thermoelektrischen Leistungskennzahl ZT von Metallfilmen und komplexen intermetallischen Verbindungen
While many thermoelectric studies concentrate on materials with a large bandgap for high-temperature applications (T=400-800 °C) the present work provides the measurement of Rho, S and Lambda of metallic and semiconducting ...
Entwicklung neuer Simulationsmethoden zur Untersuchung des Wasserhaushalts in Brennstoffzellen-Gasdiffusionslagen
Due to their high energy conversion efficiency, fuel cells offer a perspective to encounter the challenges regarding sustainable energy supply and mobility of the future. Water management is one of the key topics for further ...
Charakterisierung der Prozessierungs-und Interferenzaktivität des CRISPR/Cas-Systems in Haloferax volcanii
The CRISPR/Cas-system represents an adaptive, heritable immune system found in prokaryotes to defend themselves against viruses and other invasive genetic elements. An essential part of this system is the biogenesis of ...
The challenge of ATP biosensing - application, investigation and further development of ATP microbiosensors
Amperometric microbiosensors are an attractive tool for monitoring adenosine triphosphate (ATP) due to their inherent spatial and temporal resolution. Within this thesis new concepts for ATP microbiosensors were developed ...
Dissipative spin systems in non-Ohmic environments: real-time path integral Monte Carlo-simulations
In this work, I study the dynamics of spin-1/2 systems in contact with dissipative bosonic reservoirs. Investigations are motivated by recent progress in designing and controling atomic and solid state structures of growing ...
Functionalized benzodithiophenes with application in organic solar cells
Functionalized oligothiophenes incorporating fused central moieties, such as benzodithiophene and derivatives thereof were synthesized. Their thermal, optical, and electrochemical properties were investigated and they were ...
Tuning the magnetic properties of thin films by interaction with periodic nanostructures
This work presents a study of the magnetic properties of nanoscaled, hexagonally ordered antidot arrays within magnetically soft thin films. The antidot arrays are prepared by colloidal lithography. Magnetic characterization ...
Incorporate elastic and inelastic scattering into image calculation for low-voltage transmission electron microscope
In this work, we have studied the dependence of image contrast on different parameters for low voltage TEM by means of image calculation. For pure elastic scattering, we have utilized a semi-experimental model which ...
Cooperative phenomena in open quantum systems subject to external control
Subject of this cumulative thesis is the optimal control of open quantum systems. The cooperative interplay between strong driving and a dissipative medium is investigated, resulting in cooling and entanglement generation.
Effiziente Stärkeverwertung von Corynebacterium glutamicum für das Wachstum und die Produktion von organischen Säuren und Aminosäuren
In this work, the acetate auxotrophic mutant C. glutamicum ELB-P, a pyruvate and succinate producing strain, was engineered to become an efficient producer of pyruvate and succinate from boiled soluble potato starch, by ...