Sökning: "Electromagnetic"

Visar resultat 31 - 35 av 692 avhandlingar innehållade ordet Electromagnetic.

  1. 31. Modelling of Terahertz Planar Schottky Diodes

    Författare :Aik-Yean Tang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; S-parameter extraction; Electro-thermal; Schottky diodes; Skin effect; Electromagnetic; Frequency multipliers; High-power frequency multiplier; Current crowding; Proximity effect; Submillimetre wave generation and detection; Geometric modelling; Gallium Arsenide;

    Sammanfattning : This thesis deals with the modelling of THz planar Schottky diodes, focusing on analyses of the geometry- dependent parasitics and the diode chip thermal management. Moving towards higher operating frequencies, the electromagnetic couplings pose significant limitations on the diode performance. LÄS MER

  3. 32. Pores, inclusions and electromagnetic stirring : Topics from the continuous casting of steel

    Författare :Arash Safavi Nick; Pär Jönsson; Michael Vynnycky; Jesper H. Hattel; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : This thesis deals with two topics of relevance to the continuous casting of steel,in view of their importance as regards the quality of the final solidified structure.The first concerns the precipitation of gas pores and inclusions in the interden-dritic region of the solidifying metal. LÄS MER

  4. 33. Electromagnetic transitions in atomic nuclei : experimental studies of transition probabilities and decay schemes

    Författare :Tage Sundström; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 34. Numerical simulation of continuous casting of steel with applied magnetic field

    Författare :Hongliang Yang; KTH; []
    Nyckelord :Continuous casting; electromagnetic field; free surface; fluid flow; solidification; electromagnetic brake; finite element method; finite volume method; multigrid;

    Sammanfattning : .... LÄS MER

  7. 35. Nonlinear interaction and propagation of gravitational and electromagnetic waves in plasmas

    Författare :Martin Servin; Gert Brodin; Lennart Stenflo; Demetrios Papadopoulos; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; general relativity; plasma; gravitational waves; electromagnetic waves; nonlinear; wave interaction; wave propagation; Teoretisk fysik; Physics; Fysik; teoretisk fysik; Theoretical Physics;

    Sammanfattning : Gravitational waves and electromagnetic waves are important as carriers of energy and information. This thesis is devoted to the study of the propagation and interaction of these waves in plasmas, with emphasis on nonlinear effects and applications within astrophysics. LÄS MER