Search for dissertations about: "ion pumping"

Showing result 1 - 5 of 20 swedish dissertations containing the words ion pumping.

  2. 1. Active Transport of Ions across Biomembranes : A Kinetic Study of Cytochrome c Oxidase Reconstituted into Phospholipid Vesicles

    Author : Kristina Faxén; Peter Brzezinski; Pia Ädelroth; Thomas E. DeCoursey; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; cytochrome c oxidase; electron transfer; proton transfer; proton pumping; kinetic isotop effect; ion pumping; flow flash; Biochemistry; Biokemi; biokemi; Biochemistry;

    Abstract : Ion transport across membranes is of uttermost importance for us. It is the foundation for signaling of various kinds e.g. in the nerve-system. READ MORE

  4. 2. Towards Efficient Quantum Memories in Rare-Earth-Ion-Doped Solids

    Author : Atia Amari; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; rare-earth-ion-doped crystals; spectral hole-burning spectroscopy; AFC; CRIB; superradiance; slow light; Quantum memories; photon echo; EIT;

    Abstract : This thesis describes experiments aimed at developing a key component in applications such as quantum networks and long-distance quantum communication systems: quantum memories. Quantum memories for light using photon-echo and coherent rephrasing techniques have been developed. The work is carried out on rare-earth-ion-doped inorganic crystals. READ MORE

  5. 3. Quantum memory development and new slow light applications in rare-earth-ion-doped crystals

    Author : Qian Li; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum memories; Slow light; Rare-earth-ion-doped crystals; Light-Matter Interaction; Fysicumarkivet A:2018:Li;

    Abstract : When doped into solid state transparent crystals, rare-earth ions can have optically excited states with milliseconds coherence time and up to six hours coherence time for hyperfine levels after being cooled down to liquid helium temperature. This long coherence property makes them unique as solid state material and attractive for quantum information applications. READ MORE

  6. 4. Zinc Oxide Bulk and Nanorods

    Author : Peter Klason; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; zinc oxide; Schottky contact; buckling; annealing; semiconductor growth; ion implantation; photoluminescence; nanorods;

    Abstract : Zinc Oxide (ZnO) has many promising properties for optoelectronics, sensor applications, transparent electronics etc. To mention a few, ZnO has a large exciton binding energy (60 meV at room temperature) and a direct wide bandgap energy of 3.37 eV. In addition, ZnO is piezoelectric and shows more resistance to radiation damage than Si and GaN. READ MORE

  7. 5. Modeling RF waves in hot plasmas using the finite element method and wavelet decomposition : Theory and applications for ion cyclotron resonance heating in toroidal plasmas

    Author : Pablo Vallejos; Thomas Jonsson; Torbjörn Hellsten; Philippe Lamalle; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Fusion energy has the potential to provide a sustainable solution for generating large quantities of clean energy for human societies. The tokamak fusion reactor is a toroidal device where the hot ionized fuel (plasma) is confined by magnetic fields. Several heating systems are used in order to reach fusion relevant temperatures. READ MORE