Search for dissertations about: "transition dipole coupling"

Showing result 1 - 5 of 10 swedish dissertations containing the words transition dipole coupling.

  2. 1. Computational infrared spectroscopy : Calculation of the amide I absorption of proteins

    Author : Cesare Michele Baronio; Andreas Barth; Sander Woutersen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; infrared spectroscopy; FTIR; simulation; calculation; amide I; transition dipole coupling; F matrix; protein; amyloid β; oligomers; β-helix; Biophysics; biofysik;

    Abstract : Infrared spectroscopy is an important technique that allows to retrieve structural information from the analysis of absorption spectra. The main application of infrared spectroscopy within life science is the study of the amide I band, which is correlated with protein backbone conformation and, consequently, with the secondary structure of proteins. READ MORE

  4. 2. The choreography of protein vibrations : Improved methods of observing and simulating the infrared absorption of proteins

    Author : Eeva-Liisa Karjalainen; Andreas Barth; Astrid Gräslund; Timothy A. Keiderling; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Infrared spectroscopy; FTIR; protein; atpase; amyloid; caged compound; amide I; transition dipole coupling; exciton theory; simulation; Molecular biophysics; Molekylär biofysik; Biophysics; biofysik;

    Abstract : The work presented in this thesis has striven toward improving the capability to study proteins using infrared (IR) spectroscopy. This includes development of new and improved experimental and theoretical methods to selectively observe and simulate protein vibrations. READ MORE

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

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

    Abstract : 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. READ MORE

  6. 4. Strong light-matter interaction and its consequences on molecular photophysics

    Author : Manuel Hertzog; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Strong coupling; Vibropolariton; Polaritonic Chemistry;

    Abstract : Strong light-matter interaction offers the possibility to modify chemical and physical properties of molecules by modifying their photonic environment, resulting in the creation of hybrid light-matter states, known as polaritons. The field of polaritonic chemistry using microfluidic cavities is in its infancy, and developing methods to increase the coupling strength are necessary to maximise the effects of polaritonic states. READ MORE

  7. 5. Out of the Dark and into the Light - Microscopic Analysis of Bright, Dark and Trapped Excitons

    Author : Maja Feierabend; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; density matrix formalism; localized states; impurities; dark excitons; strain; transition metal dichalcogenides; Bloch equations;

    Abstract : Atomically thin transition metal dichalcogenides (TMDs) have been in the focus of current research due to their efficient light-matter interaction, as well as the remarkably strong Coulomb interaction that leads to tightly bound excitons. Due to their unique band structure, TMDs show a variety of optically accessible bright and inaccessible dark excitons. READ MORE