Sökning: "Kristallografi"

Visar resultat 6 - 10 av 17 avhandlingar innehållade ordet Kristallografi.

  1. 6. Generation and Applications of Short-Pulse X-ray Radiation

    Författare :Michael Harbst; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; egenskaper termiska och mekaniska ; Kondenserade materiens egenskaper:struktur; crystallography; phase equilibria; Material science; Condensed matter:stucture; thermal and mechanical properties; time-resolved; X-ray diffraction; kristallografi; fasjämvikt; Material technology; Materiallära; materialteknik;

    Sammanfattning : This thesis summarizes work using hard X-ray radiation on nanosecond and picosecond timescales. The focus is on the experimental part including detailed descriptions of setups for laser pumped - X-ray probe experiments. X-ray diffraction is sensitive to structural properties on the length scale of chemical bonds. LÄS MER

  3. 7. Transmission Electron Microscopy of Semiconductor Nanowires

    Författare :Magnus Larsson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanowires; magnetic resonance; supraconductors; magnetic and optical properties; electrical; Condensed matter:electronic structure; fasjämvikt; kristallografi; egenskaper termiska och mekaniska ; crystallography; phase equilibria; Kondenserade materiens egenskaper:struktur; akustik; Condensed matter:stucture; thermal and mechanical properties; optics; acoustics; Elektromagnetism; optik; Electromagnetism; Scanning Tunneling Microscopy; Nanomaterials; III-V Semiconductors; Transmission Electron Microscopy; Inorganic chemistry; Oorganisk kemi; relaxation; spectroscopy; Kondenserade materiens egenskaper:elektronstruktur; egenskaper elektriska; magnetiska och optiska ; supraledare; magnetisk resonans; spektroskopi; materialteknik; Material technology; Materiallära; Semiconductory physics; Halvledarfysik;

    Sammanfattning : Semiconductor nanowires are studied by using transmission electron microscopy (TEM) based methods in this work. In the first section, the growth mechanism of gallium arsenide nanowires grown by chemical beam epitaxy is investigated. The nanowires are epitaxially grown from a gallium arsenide substrate by using gold seed particles as catalysts. LÄS MER

  4. 8. Crystallographic studies on porphyrin metallation by ferrochelatase

    Författare :David Lecerof; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; thermal and mechanical properties; Condensed matter:stucture; fasjämvikt; kristallografi; egenskaper termiska och mekaniska ; Kondenserade materiens egenskaper:struktur; crystallography; phase equilibria; Magnesium; pi-helix; Zinc; ferrochelatase; Metal binding; porphyrin metallation;

    Sammanfattning : Ferrochelatase catalyses the terminal step in heme biosynthesis by inserting a ferrous ion into protoporphyrin IX. The reaction mechanism has in this thesis been studied by mainly crystallographic methods. LÄS MER

  5. 9. Specimen academicum, de crystallorum generatione, quod consent. ampliss. Facult. Med. im Reg. Acad. Upsaliensi, sub præsidio ... Dn. Doct. Caroli Linnæi, ... publico examini modeste submittit Martinus Kähler, Stockholmiensis. In audit. Gust. Maj. d. XXII. Decemb. Anni MDCCXLVII

    Författare :Carl von Linné; Mårten Kähler; Carl von Linné; Uppsala universitet; []
    Nyckelord :Texture Crystallography ; Minerals; Crystallography; Mineralogy; Geology; Geologi; Mineralogi; Kristallografi;

    Sammanfattning : .... LÄS MER

  7. 10. Metal and Semiconductor Nanocrystals for Quantum Devices

    Författare :Martin Magnusson; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; thermal and mechanical properties; quantum devices; nanocrystals; nanoparticles; gold; aerosol technology; tungsten; gallium arsenide; indium phosphide; semiconductors; thermal charging; nanoxerography; single electron transistors; nanowhiskers; Physics; Fysik; Semiconductory physics; Condensed matter:stucture; Halvledarfysik; crystallography; phase equilibria; Kondenserade materiens egenskaper:struktur; egenskaper termiska och mekaniska ; kristallografi; fasjämvikt; Fysicumarkivet A:2001:Magnusson;

    Sammanfattning : Aerosol technology was used to develop new methods for fabrication of size-selected, nanometer-sized particles of metals and semiconductors. Such particles were used to realize different types of quantum devices and nanometer-sized structures. LÄS MER