Search for dissertations about: "electron"

Showing result 1 - 5 of 2702 swedish dissertations containing the word electron.

  1. 1. 3D Electron crystallography Real space reconstruction and reciprocal space tomography

    University dissertation from Stockholm : Department of Materials and Environmental Chemistry (MMK), Stockholm University

    Author : Daliang Zhang; Stockholms universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electron crystallography; Electron microscopy; Porous materials; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; Structural Chemistry; strukturkemi;

    Abstract : Electron crystallography is an important technique for studying micro- and nano-sized materials. It has two important advantages over X-ray crystallography for structural studies: 1) crystals millions of times smaller than those needed for X-ray diffraction can be studied; 2) it is possible to; focus the electrons to form an image. READ MORE

  2. 2. Electron microscopy : contrast and signal analysis

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Einar Lindahl; Uppsala universitet.; [1981]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  3. 3. Exploiting reciprocal space : Electron diffraction, textures and precession

    University dissertation from Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Author : Peter Oleynikov; Stockholms universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; electron crystallography; electron diffraction; texture patterns; precession electron diffraction; NATURAL SCIENCES Chemistry Inorganic chemistry; NATURVETENSKAP Kemi Oorganisk kemi;

    Abstract : Electron crystallography emerges as a new tool for accurate structure determination of very small crystals. In order to exploit the full potential of electron diffraction, the methods for data acquisition and processing have to be developed towards the high standards of X-ray crystallography. READ MORE

  4. 4. Ultrasensitive Cold-Electron Bolometer

    University dissertation from Chalmers University of Technology

    Author : Ian Agulo; Chalmers tekniska högskola.; Chalmers University of Technology.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Astronomi; Astronomy; Lågtemperaturfysik; Low temperature physics; Mesoskopisk fysik; Mesoscopic physics; Supraledning; Superconductivity; cold-electron bolometer CEB ; superconducting cold-electron bolometer SCEB ; electron cooling; SIN tunnel junctions; noise equivalent power; responsivity;

    Abstract : The Cold-Electron Bolometer (CEB) is an ultrasensitive device designed for the detection of cosmic microwave background radiation. The key to its sensitivity is the electron cooling of the absorber by the superconductor-insulator-normal metal (SIN) tunnel junction. READ MORE

  5. 5. 3D Electron Diffraction Application and Development towards High-quality Structure Determination

    University dissertation from Stockholm : Department of Materials and Environmental Chemistry, Stockholm University

    Author : Yunchen Wang; Stockholms universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; three-dimensional electron diffraction; structure determination; rotation electron diffraction; oorganisk kemi; Inorganic Chemistry;

    Abstract : Electron crystallography has been proven to be effective for structure determination of nano- and micron-sized crystals. In the past few years, 3D electron diffraction (3DED) techniques were used for the structure solution of various types of complex structures such as zeolites, metal-organic frameworks (MOF) and pharmaceutical compounds. READ MORE