Search for dissertations about: "hultman k"

Showing result 1 - 5 of 13 swedish dissertations containing the words hultman k.

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

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

    Abstract : 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. READ MORE

  4. 2. Nanostructured carbon-based thin films : prediction and design

    Author : Cecilia Goyenola; Gueorgui K. Gueorguiev; Lars Hultman; Sven Stafström; Yury Gogotsi; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon; carbon-based; thin films; fullerene-like; modeling; dft;

    Abstract : Carbon-based thin films are a vast group of materials of great technological importance. Thanks to the different bonding options for carbon, a large variety of structures (from amorphous to nanostructured) can be achieved in the process of film synthesis. READ MORE

  5. 3. The k-assignment polytope, phylogenetic trees, and permutation patterns

    Author : Jonna Gill; Jan Snellman; Axel Hultman; Bruce Sagan; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In this thesis three combinatorial problems are studied in four papers.In Paper 1 we study the structure of the k-assignment polytope, whose vertices are the mxn (0,1)-matrices with exactly k 1:s and at most one 1 in each row and each column. READ MORE

  6. 4. Design of Transition-Metal Nitride Thin Films for Thermoelectrics

    Author : Sit Kerdsongpanya; Per Eklund; Björn Alling; Gunilla Wingqvist; Lars Hultman; Daniel Gall; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Thermoelectric devices are one of the promising energy harvesting technologies, because of their ability to convert heat (temperature gradient) to electricity by the Seebeck effect. Furthermore, thermoelectric devices can be used for cooling or heating by the inverse effect (Peltier effect). READ MORE

  7. 5. Scandium Nitride Thin Films for Thermoelectrics

    Author : Sit Kerdsongpanya; Per Eklund; Björn Alling; Lars Hultman; Gunilla Wingqvist; Heiner Linke; Linköpings universitet; []
    Keywords : ;

    Abstract : Thermoelectric devices are one of the promising energy harvesting technologies, since they can convert heat (i.e. a temperature gradient) to electricity. This result leads us to use them to harvest waste heat from heat engines or in power plants to generate usable electricity. READ MORE