6533b874fe1ef96bd12d61f8
RESEARCH PRODUCT
Maximizing phonon thermal conductance for ballistic membranes
Thomas KühnIlari Maasiltasubject
HistoryCondensed Matter - Materials ScienceMaterials sciencePhonon scatteringCondensed matter physicsCondensed Matter - Mesoscale and Nanoscale PhysicsPhononScatteringConductanceMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciences02 engineering and technologyElasticity (physics)021001 nanoscience & nanotechnologyCondensed Matter::Mesoscopic Systems and Quantum Hall Effect01 natural sciencesComputer Science ApplicationsEducationThermal conductivityMembraneSpeed of sound0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)010306 general physics0210 nano-technologydescription
At low temperatures, phonon scattering can become so weak that phonon transport becomes ballistic. We calculate the ballistic phonon conductance G for membranes using elasticity theory, considering the transition from three to two dimensions. We discuss the temperature and thickness dependence and especially concentrate on the issue of material parameters. For all membrane thicknesses, the best conductors have, counter-intuitively, the lowest speed of sound.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-10-05 |