Search for dissertations about: "electron microscopy"

Showing result 6 - 10 of 1105 swedish dissertations containing the words electron microscopy.

  1. 6. Transmission Electron Microscopy of Semiconductor Nanowires

    University dissertation from Polymer och Materialkemi Kemiska Institutionen

    Author : Magnus Larsson; Lund University.; Lunds universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nanowires; magnetic resonance; supraconductors; magnetic and optical properties; electrical; Condensed matter:electronic structure; fasjämvikt; kristallografi; egenskaper termiska och mekaniska ; crystallography; phase equilibria; Kondenserade materiens egenskaper:struktur; akustik; Condensed matter:stucture; thermal and mechanical properties; optics; acoustics; Elektromagnetism; optik; Electromagnetism; Scanning Tunneling Microscopy; Nanomaterials; III-V Semiconductors; Transmission Electron Microscopy; Inorganic chemistry; Oorganisk kemi; relaxation; spectroscopy; Kondenserade materiens egenskaper:elektronstruktur; egenskaper elektriska; magnetiska och optiska ; supraledare; magnetisk resonans; spektroskopi; materialteknik; Material technology; Materiallära; Semiconductory physics; Halvledarfysik;

    Abstract : Semiconductor nanowires are studied by using transmission electron microscopy (TEM) based methods in this work. In the first section, the growth mechanism of gallium arsenide nanowires grown by chemical beam epitaxy is investigated. The nanowires are epitaxially grown from a gallium arsenide substrate by using gold seed particles as catalysts. READ MORE

  2. 7. Characterizing cavity containing materials using electron microscopy A study of metal oxides, mesoporous crystals and porous material containing nanosized metal-particles

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

    Author : Miia Klingstedt; Stockholms universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Electron microscopy; Structural Chemistry; strukturkemi;

    Abstract : This thesis concerns the characterization of novel materials by utilizing electron microscopy techniques. The examined materials contain cavities with certain attributes that enables desired properties for applications such as gas separation, catalysis and fuel cells. READ MORE

  3. 8. Image Processing in High Resolution Transmission Electron Microscopy of Inorganic Materials

    University dissertation from Inorganic Chemistry, Chemical Center, Lund University

    Author : Anna Carlsson; Lund University.; Lunds universitet.; [1997]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Oorganisk kemi; Inorganic chemistry; electron diffraction; Electron microscopy; image processing;

    Abstract : High resolution transmission electron microscopy and digital image processing has been used to investigate the structure and properties of inorganic materials. The image processing was performed with the programming language Semper. All routines are listed in the appendix. READ MORE

  4. 9. Transmission Electron Microscopy of Graphene and Hydrated Biomaterial Nanostructures Novel Techniques and Analysis

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Sultan Akhtar; Uppsala universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Graphene flakes; magnetic beads DNA coils; hydrated biomaterials; transmission electron microscopy; focused ion beam scanning electron microscopy; bright-field dark-field imaging; high resolution imaging; electron diffraction and cryogenic temperatures; Materialvetenskap; Materials Science;

    Abstract : Transmission Electron Microscopy (TEM) on light element materials and soft matters is problematic due to electron irradiation damage and low contrast. In this doctoral thesis techniques were developed to address some of those issues and successfully characterize these materials at high resolution. READ MORE

  5. 10. Morphology of Polymers - Development of Electron Microscopy Methods

    University dissertation from Helen Hassander

    Author : Helen Hassander; Lund University.; Lunds universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; SEM; TEM; polymer; electron microscopy; Polymer technology; biopolymers; Polymerteknik;

    Abstract : Most polymeric materials used today are not simple homopolymers, but consist of more than one polymer, which lead to morphologies of different length scale and shape. It is important to receive knowledge of the morphologies because the properties of the materials change depending on the structure. READ MORE