Sökning: "optical microscopy"

Visar resultat 1 - 5 av 284 avhandlingar innehållade orden optical microscopy.

  1. 1. New laser-based techniques for nanometre lithography and microscopy

    Författare :Lars Malmqvist; [1996]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microscopy; near-field; frequency doubling; optical trapping; laser plasma; Atomic and molecular physics; low debris; Fysicumarkivet A:1996:Malmqvist; X-ray lithography; Atom- och molekylärfysik;

    Sammanfattning : This thesis describes the development of new laser-based techniques for nanometre lithography and microscopy. The potential of a non-intrusive scanned near-field optical microscope (SNOM) has been investigated. The probe consists of an optically trapped microscopic particle which is scanned in proximity to the object to be studied. LÄS MER

  2. 2. Laboratory soft x-ray microscopy and tomography

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Michael Bertilson; KTH.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Microscopy; X-ray optics; Diffractive optics; Zone plates; X-ray microscopy; Soft X-ray physics; Tomography; NATURAL SCIENCES Physics Other physics Optics; NATURVETENSKAP Fysik Övrig fysik Optik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : Soft x-ray microscopy in the water-window (λ = 2.28 nm – 4.36 nm) is based on zone-plate optics and allows high-resolution imaging of, e.g. LÄS MER

  3. 3. Optical Mapping of Bacterial Plasmids

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Vilhelm Müller; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; competitive binding; optical mapping; fluorescence microscopy; DNA; plasmids; CRISPR Cas9; antibiotic resistance; nanofluidics; single-molecule;

    Sammanfattning : Bacteria that have acquired resistance to antibiotics represent one of the largest threats to human health and modern health care. The genes encoding resistance are frequently spread via the transfer of plasmids, which are circular double stranded DNA molecules separate from the chromosomal DNA of the bacteria. LÄS MER

  4. 4. Development of Nonlinear Microscopy for Studies of Metabolism and Tissue Engineering

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Madeleine Åkeson; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; imaging; bacterial cellulose; nonlinear microscopy; Saccharomyces cerevisiae; yeast; C. elegans; Microscopy; lipid storage;

    Sammanfattning : Nonlinear microscopy techniques provide abilities for noninvasive and selective imaging of structural and chemical properties of biological systems. These techniques include coherent anti-Stokes Raman scattering (CARS) microscopy with the ability to selectively image molecular vibrations, second harmonic generation (SHG) microscopy which selectively images fiber structures, and third harmonic generation (THG) microscopy which is sensitive to interfaces between materials with different optical properties. LÄS MER

  5. 5. Phase-Contrast and High-Resolution Optics for X-Ray Microscopy

    Detta är en avhandling från Stockholm : KTH

    Författare :Olof von Hofsten; KTH.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Microscopy; X-ray optics; X-ray microscopy; Soft X-ray physics; NATURAL SCIENCES Physics Other physics Optics; NATURVETENSKAP Fysik Övrig fysik Optik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : X-ray microscopy is a well-established technique for nanoscale imaging. Zone plates are used as microscope objectives and provide high resolution, approaching 10 nm, currently limited by fabrication issues. This Thesis presents zone plate optics that achieve either high resolution or phase contrast in x-ray microscopy. LÄS MER