Search for dissertations about: "electrochemical 2010"

Showing result 1 - 5 of 16 swedish dissertations containing the words electrochemical 2010.

  2. 1. Electrochemical Reactions in Polymer Electrolyte Fuel Cells

    Author : Maria Wesselmark; Svein Sunde; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fuel cell; model electrodes; oxygen reduction; methanol oxidation; formic acid oxidation; hydrogen oxidation; CO oxidation; degradation; tungsten oxide; carbon support; Bränslecell; modellelektroder; syrgasreduktion; metanoloxidation; myrsyraoxidation; vätgasoxidation; CO oxidation; degradering; wolfram oxid; kolsupport; Chemical engineering; Kemiteknik;

    Abstract : The polymer electrolyte fuel cell converts the chemical energy in a fuel, e.g. hydrogen or methanol, and oxygen into electrical energy. The high efficiency and the possibility to use fuel from renewable sources make them attractive as energy converters in future sustainable energy systems. READ MORE

  4. 2. Wafer-level heterogeneous integration of MEMS actuators

    Author : Stefan Braun; Göran Stemme; Martin A. Schmidt; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Microelectromechanical systems; MEMS; silicon; wafer-level; integration; heterogeneous integration; transfer integration; packaging; assembly; wafer bonding; adhesive bonding; eutectic bonding; release etching; electrochemical etching; microvalves; microactuator; Shape Memory Alloy; SMA; NITINOL; TiNi; NiTi; cold-state reset; bias spring; stress layers; crossbar switch; routing; switch; switch array; electrostatic actuator; S-shaped actuator; zipper actuator; addressing; transfer stamping; blue tape; Computer engineering; Datorteknik;

    Abstract : This thesis presents methods for the wafer-level integration of shape memory alloy (SMA) and electrostatic actuators to functionalize MEMS devices. The integration methods are based on heterogeneous integration, which is the integration of different materials and technologies. READ MORE

  5. 3. Electrochemical and mechanical thin film sensors

    Author : Lars Henrik Skjolding; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; vancomycin; electrochemistry; transducer; DUV lithography; nanoimprint lithography; thin film; cantilever; sensor; interdigitated electrode; electrostatic interaction; mix-and-match processing; bacteria; Fysicumarkivet A:2010:Skjolding;

    Abstract : This thesis focuses on the study of thin-film sensor technologies, novel microfabrication technologies, and thin-film technology in general. The work discusses electrochemical sensors and mechanical sensor technologies as well as fabrication strategies for them. READ MORE

  6. 4. Electrically Induced Debonding of Adhesives

    Author : Simon Leijonmarck; Göran Lindbergh; Mats Johansson; Jinshan Pan; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik;

    Abstract : Electrically induced adhesive debonding is a process where an adhesive can be debonded at command with help of an applied voltage. To make this process function, the adhesive is  bonded between two metal substrates. In this study an epoxy adhesive is adhered between two aluminium foils forming a laminate structure. READ MORE

  7. 5. Mechanical Characterization and Electrochemical Sensor Applications of Zinc Oxide Nanostructures

    Author : Alimujiang Fulati; Magnus Willander; Qingxiang Qingxiang; Omer Nour; Laszlo Kish; Linköpings universitet; []
    Keywords : Nanotechnology; Zinc Oxide; nanorods; nanotubes; nanoporous; buckling; electrochemical sensor; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : Nanotechnology is emerging to be one of the most important scientific disciplines that physics, chemistry and biology truly overlap with each other. Over the last two decades science and technology have witnessed tremendous improvement in the hope of unveiling the true secrets of the nature in molecular or atomic level. READ MORE