Search for dissertations about: "neodymium"

Showing result 1 - 5 of 19 swedish dissertations containing the word neodymium.

  1. 1. Hydrometallurgical Treatment of Neodymium Magnet Waste

    Author : Marino Gergoric; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; recycling; rare-earth elements; leaching; Keywords: neodymium magnets; solvent extraction;

    Abstract : Recent decades have seen a considerable increase in the usage of rare-earth elements (REEs) in modern technologies and green energy sources. Recycling of REEs out of end-of-life products and E-scrap has become an alternative to mining them out of primary ores due to their supply risk in some countries and the development towards circular economies. READ MORE

  2. 2. Spectral control of lasers and optical parametric oscillators with volume Bragg gratings

    Author : Björn Jacobsson; Fredrik Laurell; Uwe Morgner; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; volume Bragg gratings; single-longitudinal-mode laser; laser tuning; erbium; neodymium; ytterbium; nonlinear optics; optical parametric oscillator; KTP; tunable optical parametric oscillator; narrowband optical parametric oscillator; Physics; Fysik;

    Abstract : I den här avhandlingen visas hur lasrar och optiska parametriska oscillatorer (OPO:er) kan styras spektralt med hjälp av volymbraggitter. Volymbraggitter utgörs av ett periodiskt varierande brytningsindex som skrivits i ett fototermorefraktivt glas. READ MORE

  3. 3. Application of Raman and Fluorescence Spectroscopy to Single Chromatographic Beads

    Author : Mina Larsson; Jan Lindgren; Jean-Claude Lassègues; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Chemistry; agarose; chelating group; confocal Raman spectroscopy; confocal scanning laser microscopy; gold nanoparticles; ligand distribution; functional group; neodymium; polymer beads; Raman; SERS; surface-enhanced Raman spectroscopy; Kemi; Chemistry; Kemi;

    Abstract : Chromatography is a powerful technique, essential in chemical analyses and preparative separation in industry and research. Many different kinds of chromatographic material are needed, due to the large variety of applications. Detailed methods of characterisation are needed to design new chromatographic materials and understand their properties. READ MORE

  4. 4. Compact solid-state lasers in the near-infrard and visible spectral range

    Author : Kai Seger; Fredrik Laurell; Uwe Griebner; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; volume Bragg gratings; single-longitudinal-mode laser; laser tuning; Q-switching; mode-locking; carbon nanotubes; semiconductor lasers; neodymium; ytterbium; nonlinear optics; KTP;

    Abstract : The subject of this thesis is the exploration of new concepts for compact solid-state lasers in the visible and near-infrared spectral range using new components such as volume Bragg gratings for wavelength stabilisation and wavelength tuning. Also single-walled carbon nanotubes for mode-locking and Q-switching of lasers have been studied. READ MORE

  5. 5. The Diluent Effect on the Solvent Extraction of Rare Earth Elements from Neodymium Magnet Leachate

    Author : Marino Gergoric; Chalmers University of Technology; []

    Abstract : The diluent effect on the solvent extraction of rare earth elements from neodymium magnet leachateMARINO GERGORIĆIndustrial Materials RecyclingDepartment of Chemistry and Chemical EngineeringChalmers University of TechnologyABSTRACTRare earth elements (REEs) have become vital components in a wide range of industrial applications. The demand for the REEs has grown significantly in the last few decades. READ MORE