Phonon Conduction in Silicon Nanobeam Labyrinths

Phonon Conduction in Periodically Porous Silicon Nanobridges

Cross-Plane Phonon Conduction in Polycrystalline Silicon Films

Silicon films of submicrometer thickness play a central role in many advanced technologies for computation and energy conversion. Numerous thermal conductivity data for silicon films are available in the literature, but they are mainly for the lateral, or in-plane, direction for both polycrystalline and single crystalline films. Here, we use time-domain thermoreflectance (TDTR), transmission el...

Phonon heat conduction in corrugated silicon nanowires below the Casimir limit

Casimir limit Christophe Blanc, Ali Rajabpour, Sebastian Volz, Thierry Fournier, and Olivier Bourgeois Institut N EEL, CNRS-UJF, 25 avenue des Martyrs, 38042 Grenoble Cedex 9, France Department of Mechanical Engineering, Imam Khomeini International University, Qazvin 34149-16818, Iran Laboratoire d’Energ etique Mol eculaire et Macroscopique, Ecole Centrale Paris, Grande Voie des Vignes, Chatena...

Phonon heat conduction in a semiconductor nanowire

A model for phonon heat conduction in a semiconductor nanowire with dimensions comparable to the phonon mean free path is developed. It is based on the solution of Boltzmann’s equation, which takes into account i modification of the acoustic phonon dispersion due to spatial confinement, and ii change in the nonequilibrium phonon distribution due to partially diffuse boundary scattering. Numeric...

Phonon heat conduction in layered anisotropic crystals

The thermal properties of anisotropic crystals are of both fundamental and practical interest, but transport phenomena in anisotropic materials such as graphite remain poorly understood because solutions of the Boltzmann equation often assume isotropy. Here, we extend an analytic solution of the transient, frequencydependent Boltzmann equation to highly anisotropic solids and examine its predic...