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This book provides a comprehensive overview of the state-of-the-art in the development of semiconductor nanostructures and nanophotonic devices. It covers epitaxial growth processes for GaAs- and GaN-based quantum dots and quantum wells, describes the fundamental optical, electronic, and vibronic properties of nanomaterials, and addresses the design and realization of various nanophotonic devices. These include energy-efficient and high-speed vertical cavity surface emitting lasers (VCSELs) and ultra-small metal-cavity nano-lasers for applications in multi-terabus systems; silicon photonic I/O engines based on the hybrid integration of VCSELs for highly efficient chip-to-chip communication; ...
We present a mathematical model and a tool chain for the numerical simulation of TEM images of semiconductor quantum dots (QDs). This includes elasticity theory to obtain the strain profile coupled with the Darwin-Howie-Whelan equations, describing the propagation of the electron wave through the sample. We perform a simulation study on indium gallium arsenide QDs with different shapes and compare the resulting TEM images to experimental ones. This tool chain can be applied to generate a database of simulated TEM images, which is a key element of a novel concept for model-based geometry reconstruction of semiconductor QDs, involving machine learning techniques.
This book brings together three After the Battle stories devoted to that historic struggle for the city of Stalingrad. Stalingrad was not only the most-crucial battle on the Eastern Front, it was the main turning point of the whole Second World War in Europe. The Third Reich had suffered setbacks earlier, notably at El Alamein in North Africa in October 1942, but the scale of the fighting on the Eastern Front was incomparably larger than any of the other war fronts and it was the fate of the armies there that decided the outcome of the global conflict. After the demise of the German 6. Armee at Stalingrad in February 1943 it was clear that Nazi Germany would lose the war. This book brings to...
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