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Visar resultat 11 - 15 av 18 avhandlingar som matchar ovanstående sökkriterier.

  1. 11. Quantum Chemical Studies of Diamond for Energy Related Applications

    Författare :Yang Song; Karin Larsson; Kim Bolton; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Diamond; surface; graphene; terminations; doping; functionalization; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : Diamond is a unique material with excellent properties. As a result of the development within the area of CVD synthesis, doping and surface functionalization, diamond has become a strong candidate for use in electrochemical, electronic and biomedical applications. LÄS MER

  3. 12. Development of tissue-equivalent CVD-diamond radiation detectors with small interface effects

    Författare :Bartosz Górka; Bo Nilsson; José M. Fernández-Varea; Anders Brahme; Hugo Palmans; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CVD-diamond detector; tissue-equivalent encapsulation; dosimetry; Monte Carlo simulation; Physics; Fysik; medicinsk strålningsfysik; Medical Radiation Physics;

    Sammanfattning : Due to its close tissue-equivalence, high radiation sensitivity, dose and dose-rate linearity, diamond is a very promising detector for radiation therapy applications. The present thesis focuses on the development of a chemical vapour deposited (CVD) diamond detector with special attention on the arrangement of the electrodes and encapsulation having minimal influence on the measured signal. LÄS MER

  4. 13. Nucleation and growth of CVD diamond films

    Författare :Erik Johansson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 14. Diamond Based Electronics and Valleytronics : An experimental study

    Författare :Kiran Kumar Kovi; Jan Isberg; Shin-ichi Shikata; Uppsala universitet; []
    Nyckelord :Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Diamond is a promising semiconductor material for high power, high voltage, high temperature and high frequency applications due to its remarkable material properties: it has the highest thermal conductivity, it is the hardest material, chemically inert, radiation hard and has the widest transparency in the electromagnetic spectrum. It also exhibits excellent electrical properties like high breakdown field, high mobilities and a wide bandgap. LÄS MER

  7. 15. Quantitative Spectroscopy of Gas Phase Reactions at Elevated Temperatures

    Författare :Joachim Walewski; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fluiddynamik; Gaser; plasma; Maskinteknik; vibration and acoustic engineering; vacuum technology; hydraulics; vibrationer; vakuumteknik; statistical inference; Mechanical engineering; polarisation spectroscopy; diamond CVD; quantitative spectroscopy; hydraulik; gas phase kinetics; plasmas; fluid dynamics; Gases; Fysik; akustik; Physics; Fysicumarkivet A:2001:Walewski;

    Sammanfattning : Gas phase reactions at elevated temperatures are versatile tools for material manufacturing and energy conversion. They are of great commercial interest, but they often entail hazardous impacts on the environment. There is consequently a pronounced need for the further develpment of processes utilising these types of reactions. LÄS MER