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Electron Transport in Quantum Dots Defined in Low-Dimensional Semiconductor Structures

Popular Abstract in Swedish I denna avhandling studeras ledningsförmågan hos nanometer-stora kvantprickar tillverkade i halvledarmaterial. Halvledare är material vars ledningsförmåga ligger någonstans mellan ledare (metaller) och isolatorer. I halvledare kan ledningsförmågan ändras med elektriska fält, vilket har möjliggjort utvecklandet av halvledartransistorn. Utvecklandet av halvledartransistorThis thesis focuses on electron transport in single and double quantum dots defined in low-dimensional, narrow-band-gap III-V semiconductor materials. Fabrication schemes are presented for defining single and double quantum dots in lateral InGaAs/InP heterostructures, either by a combination of etching and local gating or solely by local top gating. The quantum dots are here electrostatically conf

Construction and Control of an Educational Lab Process - The Gantry Crane

In this paper, we describe the construction and control of a gantry crane that is used in courses at the Department of Automatic Control, Lund university. Two different models of the crane are developed. A thorough example of path following, including on-line time-varying input/state-transformations and LQG control, used in a laboratory exercise is shown together with experimental results. Time-op

Why refugees still matter: a response to James Hathaway

In a 2007 article, Hathaway relaunched his proposal of a multilateral refugee protection system based on the idea of ‘common but differentiated responsibility’. The 2007 article and an earlier, similar article of 1997 both observe that the proposed system will not provide a back door to ‘permanent immigration’ for refugees.In the proposals, all remaining migration movements are subjected to the co

Process and impact evaluation of PFE – a Swedish tax rebate program for industrial energy efficiency

Before the minimum tax directive (2003/96/EC) took effect in 2004, Swedish industries had enjoyed untaxed electricity for over a decade. While the introduction of the tax increased costs for many companies, energy intensive industries were eligible for exemption if they entered an agreement on energy efficiency. Sweden quickly implemented the directive and simultaneously launched the Programme for