Sökning: "transmission electron microscopy"

Visar resultat 11 - 15 av 495 avhandlingar innehållade orden transmission electron microscopy.

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

    Författare :Miia Klingstedt; Osamu Terasaki; Syo Matsumura; Stockholms universitet; []
    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

  3. 12. Structural studies of microbubbles and molecular chaperones using transmission electron microscopy

    Författare :Johan Härmark; Philip JB Köck; Hans Hebert; Reinhard Rachel; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Transmission electron microscopy; Contrast agent; Microbubble; Polyvinyl alcohol; Single particle analysis; Heat shock protein; Molecular chaperone; Technology and Health; Teknik och hälsa;

    Sammanfattning : Ultrasound contrast agents (CAs) are typically used in clinic for perfusion studies (blood flow through a specific region) and border delineating (differentiate borders between tissue structures) during cardiac imaging. The CAs used during ultrasound imaging usually consist of gas filled microbubbles (MBs) (diameter 1-5 μm) that are injected intravenously into the circulatory system. LÄS MER

  4. 13. Transmission Electron Tomography and In-situ Analysis of Nanowires

    Författare :Axel Persson; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Transmission electron microscopy TEM ; Electron tomography; Nanowires NWs ; Aerotaxy; In-situ;

    Sammanfattning : As semiconducting nanowires have promising applications for materials science, nanoelectronics and photovoltaic devices, absolute control of their structure, morphology and composition is a prerequisite for their functionality. Nanowires, grown through the vapor-liquid-solid (VLS) method, exhibit a complex relationship between their liquid seed particle and what properties, such as the aforementioned ones, the wire adopts in the end. LÄS MER

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

    Författare :Helen Hassander; Centrum för analys och syntes; []
    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

  7. 15. Characterisation of III-V semiconductor nanowires by in-situ transmission electron microscopy

    Författare :Magnus Larsson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; STM-TEM; semiconductor; STM; nanowires; VSS mechanism; Electron microscopy;

    Sammanfattning : [abstract missing].... LÄS MER