Sökning: "One-photon spectroscopy"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden One-photon spectroscopy.

  1. 1. 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

  3. 2. 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

  4. 3. 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

  5. 4. Electronic structure investigations of transition metal complexes through X-ray spectroscopy

    Författare :Meiyuan Guo; Marcus Lundberg; Hélène Bolvin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; transition metal complexes; x-ray spectroscopy; electronic structures; Kemi; Chemistry;

    Sammanfattning : Catalysts based on the first-row (3d) transition metals are commonly seen in chemical and biological reactions. To understand the role of the transition metal in the catalyst, the element specific technique core level spectroscopy is used to probe the electronic structure and geometric properties centered around the metal site. LÄS MER

  7. 5. Electron-nuclear Dynamics in Nonlinear Optics and X-ray spectroscopy

    Författare :Sergey Polyutov; Faris Gelmukhanov; Patrick Norman; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi;

    Sammanfattning : This thesis is devoted to theoretical studies of the role of nuclear vibrations on nonlinear and linear absorption, pulse propagation, and resonant scattering of light. The molecular parameters needed for the simulations are obtained through suitable quantum chemical calculations, which are compared with available experimental data. LÄS MER