Search for dissertations about: "lattice barrier"

Showing result 1 - 5 of 32 swedish dissertations containing the words lattice barrier.

  2. 1. Heterostructure Barrier Varactor Diodes for Frequency Multiplier Applications

    Author : Jan Stake; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; III-V semiconductor; millimetre- and submillimetre wave power source; Heterostructure Barrier Varactor HBV ; frequency multiplier; varactor diode;

    Abstract : This thesis deals with fabrication, characterisation and modelling of the Heterostructure Barrier Varactor (HBV) diode and its use in frequency multiplier circuits. Different aspects of material structures and frequency multipliers are described. READ MORE

  4. 2. Planar Heterostructure Barrier Varactor Diodes for Millimetre Wave Applications

    Author : Jan Stake; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; millimetre- and sub-millimetre wave power source; III-V semiconductor; varactor diode; frequency multiplier; Heterostructure Barrier Varactor HBV ;

    Abstract : This thesis deals with fabrication, characterisation and modelling of the Heterostructure Barrier Varactor (HBV) diode and its use in frequency multiplier applications. Different aspects of material structures and frequency multipliers are described. READ MORE

  5. 3. Ultracold rubidium atoms in periodic potentials

    Author : Robert Saers; Anders Kastberg; Svante Jonsell; Jan W. Thomsen; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bose-Einstein condensation; optical lattice; quantum phase transition; experiment; theory; Condensed matter physics; Kondenserade materiens fysik;

    Abstract : This thesis includes both experimental and theoretical investigations, presented in a series of eight papers. The experimental part ranges from the construction procedures of an apparatus for Bose-Einstein condensates, to full scale experiments using three different set-ups for ultracold atoms in optical lattices. READ MORE

  6. 4. On the Pricing of Path-Dependent Options and Related Problems

    Author : Per Hörfelt; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The thesis considers the pricing of European path-dependent options in a multi-dimensional Black-Scholes model. The thesis focuses mainly on the three different classes of path-dependent options: barrier, Asian, and lookback options. The thesis consists of eight chapters. READ MORE

  7. 5. Internal rotation in molecules : a nuclear magnetic resonance relaxation study

    Author : Anders Ericsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In order to study the internal rotation of methyl-type groups in molecules, the carbon-13 nuclear magnetic resonance (NMR) spin-lattice relaxation times (T1) and nuclear Overhauser enhancement factors (n) are measured for some terpenes (borneol, camphor, isopinocampheol and α-pinene), for octafluorotoluene and for 1-methylnaphtalene. In addition, deuterium NMR T1 data are presented for 1-methylnaphtalene-d10. READ MORE