Sökning: "subject of technology"

Visar resultat 1 - 5 av 973 avhandlingar innehållade orden subject of technology.

  1. 1. Computational Studies of Graphene Growth and Carbonaceous Polyethylene Nanocomposites

    Detta är en avhandling från Chalmers University of Technology

    Författare :Shayesteh Haghighatpanah; Chalmers tekniska högskola.; Chalmers University of Technology.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Graphene; Carbon Nanotubes; Polyethylene; Molecular Modelling.;

    Sammanfattning : Graphene, the youngest allotrope of carbon, has attracted a lot of attention in different fields of science due to its unique electrical, mechanical, and optical properties. Controlling the growth of graphene is a very topical subject and critical for producing material with desired properties since the properties of graphene are highly dependent on its atomic structure and it is often desirable that the material contains very few or (if possible) no defects. LÄS MER

  2. 2. The Functional Microstructure of Al/AlOx/Al Tunnel Junctions

    Detta är en avhandling från Chalmers University of Technology

    Författare :Samira Mousavi Nik; Chalmers tekniska högskola.; Chalmers University of Technology.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microstructure; Superconducting Tunnel Junctions; AlOx Tunnel Barriers; Interfaces; Transmission Electron Microscopy; Imaging; Spectroscopy; Grain Growth.;

    Sammanfattning : Josephson junction as a novel superconducting electronic component plays an important role in most small-scale superconducting systems. Particularly the Al/AlOx/Al tunnel junction, a high-performance junction made with a well-established microfabrication technology, is widely used as a building block of many quantum circuits. LÄS MER

  3. 3. Surfaces of Honed Cylinder Liners

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Zlate Dimkovski; Högskolan i Halmstad.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Materials science Surface engineering; TEKNIKVETENSKAP Teknisk materialvetenskap Ytbehandlingsteknik; Honing; Characterisation; Blechmantel; Groove Parameters; Quality Control; Oil Consumption; Wear; Friction; Mixed Lubrication Simulation; Övrig bearbetning sammanfogning; Other processing assembly;

    Sammanfattning : Cylinder liner surfaces are often on the agenda of engine developers because of their large influence on the frictional losses, oil consumption and emissions of internal combustion engines. Improving the liner function involves not only manufacturing new surfaces and checking their function but also characterising them as a necessary intermediate step for better understanding of the changes made. LÄS MER

  4. 4. Development of high-Tc SQUID magnetometers for on-scalp MEG

    Detta är en avhandling från Chalmers University of Technology

    Författare :Minshu Xie; Chalmers tekniska högskola.; Chalmers University of Technology.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; on-scalp MEG; Bicrystal grain boundary; high-Tc SQUIDs; magnetometers; nanowire junctions; YBCO; magnetoencephalography;

    Sammanfattning : This thesis describes the development of high critical temperature superconducting quantum interference device (high-Tc SQUID) magnetometers based on bicrystal grain boundary and nanowire junctions for the potential use in on-scalp magnetoencephalography (MEG), which is a new generation MEG technique with reduced sensor-to-subject standoff distances.MEG is a method of mapping neural dynamics in the human brain by recording the magnetic fields produced by neural currents. LÄS MER

  5. 5. Vibro-impact dynamics of fretting wear

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Jakob Knudsen; Malmö University.; [2001]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap; Technology;

    Sammanfattning : The dynamics and wear of non-linear impact oscillators, comprising a single-degree of freedom system as well as continuous beam systems are analysed. The considered beams are of cantilever type with the lateral motion of the free end constrained by elastic supports. They are modelled as Bernoulli beams with Rayleigh damping. LÄS MER