335 research outputs found

    Voor een nieuw Oostenrijk : aartshertog Johan als legerhervormer en generaal 1805-1809

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    A survey into the origins of the army reforms of Archduke John of Austria 1805-1809. The thesis claims that the army reforms were not merely aimed at reforming the army, but through the army the political, social en economical structure of the Empire as well. John was influenced intellectually by his father, the emperor Leopold II, and Johannes von MĂĽller, a Swiss historian of the early romantic school. John of Austria saw that limited warfare was something of the 18th century, and tried to realize a style of warfare that he thought would be more suited to a people's war. The survey ends with a chapter on the war of 1809, looks into Johns experiences in its campaigns and concludes that the Austrian defeat meant the defeat of the reform party in Habsburg politics as well.LEI Universiteit LeidenPolitical Culture and National Identit

    Exciton Footprint of Self-assembled AlGaAs Quantum Dots in Core-Shell Nanowires

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    Quantum-dot-in-nanowire systems constitute building blocks for advanced photonics and sensing applications. The electronic symmetry of the emitters impacts their function capabilities. Here, we study the fine structure of gallium-rich quantum dots nested in the shell of GaAs-AlGaAs core-shell nanowires. We used optical spectroscopy to resolve the splitting resulting from the exchange terms and extract the main parameters of the emitters. Our results indicate that the quantum dots can host neutral as well as charges excitonic complexes and that the excitons exhibit a slightly elongated footprint, with the main axis tilted with respect to the growth axis. GaAs-AlGaAs emitters in a nanowire are particularly promising for overcoming the limitations set by strain in other systems, with the benefit of being integrated in a versatile photonic structure
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