Search for dissertations about: "charge accumulation"

Showing result 11 - 15 of 47 swedish dissertations containing the words charge accumulation.

  2. 11. Shuttle Transport of Charge in Normal and Superconducting Nanostructures

    Author : Andreas Isacsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Josephson effect; superconductivity; nanoelectromechanics NEMS ; single electron tunneling; coulomb blockade;

    Abstract : In nanoscale systems, accumulation of charge is associated with large charging energies. If the forces arising due to the Coulomb interaction are comparable to the rigidity of the structures mechanical deformations can couple to the electronic degrees of freedom. READ MORE

  4. 12. Electronic structure of clean and adsorbate-covered InAs surfaces

    Author : Karolina Szamota-Leandersson; Ulf Otto Karlsson; Vladimir Chab; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; angle-resolved photoemission; electronic structure; accumulation layer; adatoms; reconstruction; Surfaces and interfaces; Ytor och mellanytor;

    Abstract : This thesis is the result of investigations regarding the processes in InAs III-V semiconductor surfaces induced by additional charge incorporated by adsorbates. The aim of the project is to study the development of the accumulation layer on the metal/InAs(111)A/B surfaces and its electronic structure. READ MORE

  5. 13. SOD1´s Law : An Investigation of ALS Provoking Properties in SOD1

    Author : Roberth Byström; Gerhard Gröbner; Stefan Marklund; Mikael Oliveberg; Bengt-Harald Jonsson; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ALS; amyotrophic lateral sclerosis; SOD1; protein folding; membrane interaction; aggregates; survival time; repulsive charge; Biochemistry; Biokemi;

    Abstract : Proteins are the most important molecules in the cell since they take care of most of the biological functions which resemble life. To ensure that everything is working properly the cell has a rigorous control system to monitor the proper function of its proteins and sends old or dysfunctional proteins for degradation. READ MORE

  6. 14. Proton conductivity of lanthanum and barium zirconate: Microscale aspects on first-principles basis

    Author : Joakim Nyman; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; first principles; trapping; conductivity; grain boundary; segregation; pyrochlore; space charge; solid oxide fuel cell; depletion; electrolyte; La2Zr2O7; oxygen vacancy; BaZrO3; proton; DFT; point defect; perovskite; acceptor;

    Abstract : Fuel cells are devices which convert chemical energy into electrical energy cleanly and efficiently. Development of fuel cells compatible with hydrocarbon fuels would make more efficient use of present fossil and renewable fuels, and also enable progress towards a future hydrogen economy. READ MORE

  7. 15. Computational framework for studying charge transport in high-voltage gas-insulated systems

    Author : Shailendra Singh; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; barrier discharge; low temperature plasma; drift diffusion equation; gaseous dielectrics; gas discharge; streamer propagation; high voltage;

    Abstract : Electrical switchgear industry dealing with transmission and distribution of power is strongly affected by the changing dynamics of climate control. Their main contribution to the global warming is through SF6 gas, having a GWP of 23500 (times of CO2). SF6 plays an important role in providing electrical insulation for these high voltage systems. READ MORE