Sökning: "full width at half maximum FWHM"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden full width at half maximum FWHM.

  1. 1. Magnetron Sputter Epitaxy of GaN Epilayers and Nanorods

    Författare :Muhammad Junaid; Jens Birch; Lars Hultman; K. Scott Butcher; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : In this research, electronic-grade GaN(0001) epilayers and nanorods have been grown onto Al2O3(0001) and Si(111) substrates, respectively, by reactive magnetron sputter epitaxy (MSE) using liquid Ga as a sputtering target. MSE, employing ultra high vacuum conditions, high-purity source materials, and lowenergy ion assisted deposition from substrate biasing, is a scalable method, lending itself to large area GaN synthesis. LÄS MER

  3. 2. Pulse Generation and Detection through Intra-Cavity Up-Conversion

    Författare :Max Widarsson; Fredrik Laurell; Valdas Pasiskevicius; Peter Tidemand-Lichtenberg; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optik och fotonik; Optics and Photonics;

    Sammanfattning : The work presented in this thesis concerns two main categories: pulse detection and pulse generation, however both utilise intra-cavity up-conversion. The work regarding pulse detection deals with up-conversion LIDAR and was split into two smaller projects, the first one focused on the resolution in measurements along one line with multiple reflections, and the second focused on measurements further into the MIR, as well as performing 3D imaging. LÄS MER

  4. 3. Photoresponse of Patterned YBa2Cu3O7-x Thin Films

    Författare :Martin Danerud; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The first object of this work was to develop YBa2Cu3O7-x (YBCO) thin films. Initially, Y, BaF2 and Cu were coevaporated with the substrate temperature (TS) 400 °C and the oxygen pressure (pO2) 5 x 10-5 mbar on SrTiO3 substrates with a subsequent high temperature annealing at 890 °C for 15 min in flowing wet oxygen. LÄS MER

  5. 4. Atmospheric Species and Spectral Radiation in Terrestrial Exoplanets : Implications for Astrobiology

    Författare :Samuel Konatham; Javier Martin-Torres; María-Paz Zorzano Mier; Akos Kereszturi; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Exoplanets; Atmospheres; Habitability; Human vision; Scotopic vision; Photopic vision; Spectral radaition; Atmosfärsvetenskap; Atmospheric science;

    Sammanfattning : The physical properties of the planets and their parent stars are fundamental in the composition of atmospheres and radiative environments, which fundamentally determine their surface temperature and habitability. The atmospheric composition and radiation play a vital role in the emergence of life. LÄS MER

  7. 5. The temporomandibular joint : Tomopraphic and CT assesment of its bone demarcations with reference to adjacent organs

    Författare :Jan Ahlqvist; Annika Isberg; Sven-Ola Hietala; Umeå universitet; []
    Nyckelord :Temporomandibular joint; anatomy; tomography; CT; artefacts; odontologi; Odontology;

    Sammanfattning : The wall of the temporal bone separating the temporomandibular joint (TMJ) from surroundings organs, can be very thin and also have development defects. Distortion effects in the radiographic reproduction of these bone walls can result in misinterpretations when exanimating suspected pathologic changes in the region. LÄS MER