Search for dissertations about: "ion dynamics"

Showing result 6 - 10 of 271 swedish dissertations containing the words ion dynamics.

  2. 6. Local Structure and Dynamics of Next Generation Electrolytes - linking microscopic and macroscopic properties

    Author : Filippa Lundin; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; QENS; Ionic Liquids; Highly concentrated electrolytes; Dynamics; SAXS; Ion Transport; Electrolytes; Structure;

    Abstract : The electrolyte is a crucial part of a battery in terms of performance, longevity and safety. However, the state-of-the-art electrolytes for lithium-ion batteries are based on organic solvents and Li-salts (typically at 1M concentration) which are volatile and degrade at higher temperatures. READ MORE

  4. 7. Iron Based Materials for Positive Electrodes in Li-ion Batteries : Electrode Dynamics, Electronic Changes, Structural Transformations

    Author : Andreas Blidberg; Fredrik Björefors; Torbjörn Gustafsson; Carl Tengstedt; Miran Gaberšček; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Li-ion; batteries; electrochemistry; iron; LiFeSO4F; Li2FeP2O7; PEDOT; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Abstract : Li-ion battery technology is currently the most efficient form of electrochemical energy storage. The commercialization of Li-ion batteries in the early 1990’s revolutionized the portable electronics market, but further improvements are necessary for applications in electric vehicles and load levelling of the electric grid. READ MORE

  5. 8. Modeling of voltage-gated ion channels

    Author : Pär Bjelkmar; Erik Lindahl; Toby W. Allen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Molecular modeling; Molecular dynamics; Voltage-gating; Ion channels; Protein structure prediction; Chemistry; Kemi; biokemi; inriktning teoretisk kemi; Biochemistry with Emphasis on Theoretical Chemistry;

    Abstract : The recent determination of several crystal structures of voltage-gated ion channels has catalyzed computational efforts of studying these remarkable molecular machines that are able to conduct ions across biological membranes at extremely high rates without compromising the ion selectivity. Starting from the open crystal structures, we have studied the gating mechanism of these channels by molecular modeling techniques. READ MORE

  6. 9. Shaking the EF-Hand. Dynamics and Ion-Binding to Calmodulin and Calbindin D9k

    Author : Anders Malmendal; Biofysikalisk kemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnesium; line shape; ion binding; EF-hand; cooperativity; conformational exchange; chemical shift; calmodulin; calcium; calbindin D9k; allostery; backbone dynamics; NMR; relaxation; Physical chemistry; Fysikalisk kemi;

    Abstract : The work described in this thesis represents a biophysical approach, mainly using nuclear magnetic resonance (NMR) spectroscopy, to investigate the impact of magnesium ions on the EF-hand calcium-binding proteins calmodulin and calbindin D9k, as well as the dynamics of these proteins at low calcium levels. The x-ray structure of magnesium-saturated calbindin D9k shows a magnesium ion in only one of the two ion binding sites. READ MORE

  7. 10. Dynamics of Disordered Materials in Confined Geometries

    Author : Christer Svanberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer film; glass transition; confinement; polymer gel; dynamics; dielectric spectroscopy; gel electrolytes; relaxation; photon correlation; cooperativity;

    Abstract : This thesis is concerned with effects of geometrical confinement on dynamics in disordered materials in the nanoscopic range. Of particular interest is the dynamics around the liquid to glass transition. Two systems have been investigated: thin polymer films and polymer gels. READ MORE