Sökning: "Scanning electron microscopy SEM"

Visar resultat 1 - 5 av 203 avhandlingar innehållade orden Scanning electron microscopy SEM.

  1. 1. Mechanical behaviour of carbon nanostructures

    Detta är en avhandling från Karlstad : Karlstads universitet

    Författare :Henrik Jackman; Karlstads universitet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbon nanotubes; CNT; multiwalled carbon nanotubes; MWCNT; rippling; buckling; mechanical properties; transmission electron microscopy; TEM; scanning electron microscopy; SEM; atomic force microscopy; AFM; Young’s modulus; in situ TEM; in situ SEM; Physics; Fysik;

    Sammanfattning : AbstractCarbon nanotubes (CNTs) have extraordinary mechanical and electrical properties. Together with their small dimensions and low density, they are attractive candidates for building blocks in future nanoelectromechanical systems and for many other applications. LÄS MER

  2. 2. Morphology of Polymers - Development of Electron Microscopy Methods

    Detta är en avhandling från Helen Hassander

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

    Sammanfattning : 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. LÄS MER

  3. 3. Quantitative Electron Microscopy Studies of Metal Nanoparticle Catalysts: Nanostructure, Support Interaction and Ageing Effects

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Torben Nilsson Pingel; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; CO oxidation; strain; ageing; specimen preparation; scanning electron microscopy SEM ; FIB SEM; supported nanoparticle catalyst; transmission electron microscopy TEM ; particle size distribution PSD ; platinum;

    Sammanfattning : Heterogeneous catalysis plays a major role in modern society, for example in chemical production, sustainable energy production and emission control technologies. Metal nanoparticles (NPs) supported on oxide materials are frequent catalytic systems in this field. LÄS MER

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

    Detta är en avhandling från Stockholm : Department of Materials and Environmental Chemistry (MMK), Stockholm University

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

    Sammanfattning : 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. LÄS MER

  5. 5. Fabrication and Applications of a Focused Ion Beam Based Nanocontact Platform for Electrical Characterization of Molecules and Particles

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Tobias Blom; Uppsala universitet.; [2010]
    Nyckelord :Focused Ion Beam; FIB; Scanning Electron Microscopy; SEM; Nanogap electrodes; Nanostructuring; Nanofabrication; Electron Beam Lithography; Electrical characterization; Dielectrophoresis;

    Sammanfattning : The development of new materials with novel properties plays an important role in improving our lives and welfare. Research in Nanotechnology can provide e.g. cheaper and smarter materials in applications such as energy storage and sensors. LÄS MER