Search for dissertations about: "A. Jonas Niklasson"

Found 4 swedish dissertations containing the words A. Jonas Niklasson.

  2. 1. Elastic Wave Propagation in Anisotropic Media. Application to Ultrasonic NDT

    Author : A. Jonas Niklasson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; layered media; cylinders; cracks; integral equations; scattering; nondestructive testing; elastic waves; ultrasonics; transducers; anisotropy;

    Abstract : The subject of this thesis is elastic wave propagation in anisotropic materials with application to ultrasonic nondestructive testing (NDT). The first part of the thesis is concerned with modeling of ultrasonic transducers and wave propagation in anisotropic materials in general. First, a scalar 2-D case is considered. READ MORE

  4. 2. Ultrasonic 2D-SH probe modelling and crack detection in anisotropic solids

    Author : A. Jonas Niklasson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : .... READ MORE

  5. 3. Electrochromic Properties of Iridium Oxide Based Thin Films

    Author : Jonas Backholm; Gunnar A. Niklasson; Andris Azens; Franco Decker; Uppsala universitet; []
    Keywords : Engineering physics; Electrochromism; iridium oxide; hydrogen intercalation; chemical diffusion coefficient; density of states; optical modulation; Teknisk fysik;

    Abstract : Electrochromic iridium oxide (IrOx) and iridium-tantalum oxide (IrTaOx) thin films were prepared by reactive magnetron sputtering. Composition, density, and structure were determined using Rutherford backscattering spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and electron energy loss spectroscopy. READ MORE

  6. 4. Quantum transport in photoswitching molecules : An investigation based on ab initio calculations and Non Equilibrium Green Function theory

    Author : Anders Odell; Anna Delin; Anders Niklasson; Jonas Fransson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular electronics; electron transport; electron structure; density functional theory; non equilibrium green function theory; Electronic structure; Elektronstruktur;

    Abstract : Molecular electronics is envisioned as a possible next step in device miniaturization. It is usually taken to mean the design and manufacturing of electronic devices and applications where organic molecules work as the fundamental functioning unit. READ MORE