Sökning: "thulium"
Hittade 4 avhandlingar innehållade ordet thulium.
1. Integration of thulium silicate for enhanced scalability of high-k/metal gate CMOS technology
Sammanfattning : High-k/metal gate stacks have been introduced in CMOS technology during the last decade in order to sustain continued device scaling and ever-improving circuit performance. Starting from the 45 nm technology node, the stringent requirements in terms of equivalent oxide thickness and gate current density have rendered the replacement of the conventional SiON/poly-Si stack unavoidable. LÄS MER
2. Robust Multi-objective Optimization of Rare Earth Element Chromatography
Sammanfattning : Rare earth elements comprise the metallic elements known as lanthanides as well as scandium and yttrium. They are extensively used in modern technological industries and are considered as strategic commodities in many countries. LÄS MER
3. Quantum Optics and Quantum Information Processing in Rare-Earth-Ion-Doped Crystals
Sammanfattning : In this thesis, aspects of the use of cryogenically cooled rare-earth-ion-doped crystals in the fields of quantum optics and quantum information processing are addressed. The experiments and theoretical considerations referred to in this thesis are based on the coherent transient interaction between light and the ions in the crystals. LÄS MER
4. Characterization and Optimization of Silicon-strip Detectors for Mammography and Computed Tomography
Sammanfattning : The goal in medical x-ray imaging is to obtain the image quality requiredfor a given detection task, while ensuring that the patient dose is kept as lowas reasonably achievable. The two most common strategies for dose reductionare: optimizing incident x-ray beams and utilizing energy informationof transmitted beams with new detector techniques (spectral imaging). LÄS MER