Search for dissertations about: "transient kinetics"

Showing result 16 - 20 of 88 swedish dissertations containing the words transient kinetics.

  2. 16. Transient State Fluorescence Microscopy - method development and biological applications : Exploiting the dark states of fluorophores to measure oxygen concentrations, redox state, Förster resonance energy transfer and membrane viscosity

    Author : Thiemo Spielmann; Jerker Widengren; Karsten König; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Transient States imaging TRAST ; Triplet State imaging; fluorescence microscopy; modulated excitation; triplet state; radical state; trans-cis isomerisation;

    Abstract : Due to their long lifetime, triplet, redox and other transient states of fluorophores are highly sensitive to the micro-environment. Imaging their spatial distribution in biological samples can therefore help answer interesting questions about the metabolism, molecular interactions and dynamics in living cells. READ MORE

  4. 17. Capacitance Spectroscopy of Point Defects in Silicon and Silicon Carbide

    Author : Denny Åberg; KTH; []
    Keywords : capacitance spectrocopy; deep levels; deep level transient spectroscopy; thermal donors; thermal double donors; ultra shallow thermal donors; chemical kinetics; silicon carbide; ion implantation; implantation induced defects; implantation induced pas;

    Abstract : .... READ MORE

  5. 18. Shining Light on Molecules : Electron Transfer Processes in Model Systems for Solar Energy Conversion Investigated by Transient Absorption Spectroscopy

    Author : Jens Föhlinger; Leif Hammarström; Davidsson Jan; Benjamin Dietzek; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; photophysics; photoinduced electron transfer; transient absorption spectroscopy; laser spectroscopy; solar energy conversion; p-type DSSCs; Charge separation; recombination; mesoporous NiO;

    Abstract : In the recent years, solar energy conversion has attracted a huge research interest due to the potential application for limiting the greenhouse effect. In many solar cells and solar fuel cells, understanding of charge transfer (CT) and recombination is important for future improvement of the overall efficiency. READ MORE

  6. 19. Transient electrochemical methods for investigation of porous battery electrodes

    Author : Anton Lundqvist; KTH; []
    Keywords : electrochemical iimpedance spectroscopy; limn2o4; mathematical modelling; metal hydride; mcroelectrode; porous electrode; potential step; state of charge;

    Abstract : This thesis treats electrochemical methods used to studybattery materials. Two different types of materials are used asmodel systems in this study, metal hydride alloys used in thenickel-metal hydride battery and LiMn2O4suggested for use in the lithium-ion battery. Thetwo model systems are used to critically analyse differentexperimental methods. READ MORE

  7. 20. Time-Varying Excitation in Fluorescence Spectroscopy for Biological Applications

    Author : Gustav Persson; Jerker Widengren; Måns Ehrenberg; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fluorescence; spectroscopy; molecular kinetics; Physics; Fysik;

    Abstract : The focus of this thesis is to explore and use the benefits of time-varying excitation in fluorescence spectroscopy for studies of biomolecular dynamics. Two new techniques taking advantage of modulated excitation are presented. READ MORE