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Visar resultat 6 - 10 av 40 avhandlingar som matchar ovanstående sökkriterier.

  1. 6. Development and Application of Non-linear Mid-infrared Laser Spectroscopy for Combustion Diagnostics

    Författare :Zhiwei Sun; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Degenerate four-wave mixing; Polarization spectroscopy; Mid-infrared; Non-linear laser spectroscopy; Laser diagnostics; Combustion; Flame; HITRAN; Concentration; Temperature; Fysicumarkivet A:2012:Sun;

    Sammanfattning : The work reported in this thesis involved the development and application of two novel infrared non-linear laser techniques, namely mid-infrared polarization spectroscopy (IRPS) and mid-infrared degenerate four-wave mixing (IR-DFWM) to combustion diagnostics. These two techniques meet the needs of species concentration detection in combustion environments, especially for those species lacking accessible electronic (one-photon) transitions in the ultraviolet (UV) or visible spectral region. LÄS MER

  3. 7. Non-linear Optical Microscopy and Spectroscopy for Biomedical Studies

    Författare :Stina Guldbrand; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Two-Photon Excitation Microscopy; Fluorescence Correlation Spectroscopy; Multiphoton Luminescence; Human Skin; Gold nanoparticles;

    Sammanfattning : This thesis is based on the application of non-linear optical microscopy and spectroscopy techniques within biomedical research. Non-linear optical microscopy gives the possibility of exciting fluorophores using near infrared light. LÄS MER

  4. 8. Time resolved laser spectroscopy

    Författare :Karin Ekvall; KTH; []
    Nyckelord :non-linear polarisation; third and fifth order susceptibility; cross phase modulation; transient absorption femtosecond spectroscopy;

    Sammanfattning : .... LÄS MER

  5. 9. Growth and Characterisation of Non-linear Ferroelectric Heterostructures

    Författare :Khaled Khamchane; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : High dielectric constant or ferroelectric materials are needed for a range of devices, non-volatile ferroelectric computer memories, NVFRAMs, microwave devices utilising the non-linear polarisation as a function of electric field, or other microwave applications. High dielectric constant and low losses can be achieved in single crystals of ferroelectrics. LÄS MER

  7. 10. Applications of Chromophores and Multiphoton Techniques to Study Structure and Interactions of Bio-macromolecules in Assembled State

    Författare :Piotr Hanczyc; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Z-scan; One-photon spectroscopy; oxazole yellow dyes; two-photon absorption.; non-linear spectroscopy; PVA DNA dyes films; linear dichroism; ruthenium complexes;

    Sammanfattning : The research presented in this thesis is concerned with the linear and nonlinear optical properties of biopolymers and the chromophores that bind to them. This thesis combines analyses of the interactions of biomolecules with technological improvements of already existing systems for bionanotechnology-related research. LÄS MER