Now showing items 18-22 of 22

    • Thermal conduction mechanisms in boron nitride nanotubes: Few-shell versus all-shell conduction 

      Savic, Ivana; Stewart, Derek; Mingo, Natalio (American Physical Society, 2008-12-29)
      It has been argued that the experimentally observed limitation of heat transport through boron nitride nanotubes is due to intershell scattering rather than to inefficient heat transfer to inner shells. Using an atomistic ...
    • Thermal conductivity of bulk and nanowire Mg2Si_{x}Sn_{1-x} alloys from first principles 

      Li, Wu; Lindsay, Lucas; David, Broido; Stewart, Derek; Mingo, Natalio (American Physical Society, 2012-11-29)
      The lattice thermal conductivity (κ) of the thermoelectric materials, Mg2Si, Mg2Sn, and their alloys, are calculated for bulk and nanowires, without adjustable parameters. We find good agreement with bulk experimental ...
    • Thermal conductivity of diamond nanowires from first principles 

      Li, Wu; Mingo, Natalio; Lindsay, Lucas; Broido, David; Stewart, Derek; Katcho, Nebil (American Physical Society, 2012-05-17)
      Using ab initio calculations we have investigated the thermal conductivity (k) of diamond nanowires, unveiling unusual features unique to this system. In sharp contrast with Si, k(T) of diamond nanowires as thick as 400 ...
    • Thermal conductivity of indium arsenide nanowires with wurtzite and zinc blende phases 

      Zhou, Feng; Moore, Arden; Bolinsson, Jessica; Persson, Ann; Froberg, Linus; Pettes, Michael; Kong, Huijun; Rabenberg, Lew; Caroff, Philippe; Stewart, Derek; Mingo, Natalio; Dick, Kimberly; Samuelson, Lars; Linke, Heiner; Shi, Li (American Physical Society, 2011-05-19)
      The thermal conductivity of wurtzite and zinc blende indium arsenide nanowires was measured using a microfabricated device, with the crystal structure of each sample controlled during growth and determined by transmission ...
    • Ultrafast thermoelectric properties of gold under conditions of strong electron-phonon nonequilibrium 

      Hopkins, Patrick; Bauer, Matthew; Duda, John; Smoyer, Justin; English, Timothy; Norris, Pamela; Beechem, Thomas; Stewart, Derek (American Institute of Physics (AIP), 2010-11-23)
      The electronic scattering rates in metals after ultrashort pulsed laser heating can be drastically different than those predicted from free electron theory. The large electron temperature achieved after ultrashort pulsed ...