منابع مشابه
Phonon Transport in Graphene
Properties of phonons – quanta of the crystal lattice vibrations – in graphene have attracted strong attention of the physics and engineering communities. Acoustic phonons are the main heat carriers in graphene near room temperature while optical phonons are used for counting the number of atomic planes in Raman experiments with few-layer graphene. It was shown both theoretically and experiment...
متن کاملPhonon Transport in Nanostructures
Recent experiments aiming to produce TiO2 nanostructures have been riddled with complications. It has been found that an undesired reaction occurs with the water used in the flaking process producing a sulphurous smell. This product suggests the production of TiOxS2−x in the layered crystal structure. This nanostructure has great potential benefits for the construction of semiconductor devices ...
متن کاملPhonon Transport Across Mesoscopic Constrictions
Phonon transport across constrictions formed by a nanowire or a nanoparticle on a substrate is studied by a numerical solution of the gray Boltzmann transport equation (BTE) resolving the effects of two length scales that govern problems of practical importance. Predictions of total thermal resistance for wire/substrate and particle/substrate combinations are made for the entire range of Knudse...
متن کاملBoltzmann Solver for Phonon Transport
Boltzmann Transport Equation is solved numerically to model phonon transport in a subcontinuum domain in order to study heat transfer in thin film semiconductors. The phonon distribution function is modified to get an Energy equation from the Boltzmann Transport Equation. Gray form of the Energy equation is solved in the Relaxation time approximation to get the Phonon Energy Density distributio...
متن کاملCross-plane phonon transport in thin films
We predict the cross-plane phonon thermal conductivity of Stillinger-Weber silicon thin films as thin as 17.4 nm using the lattice Boltzmann method. The thin films are modeled using bulk phonon properties obtained from harmonic and anharmonic lattice dynamics calculations. We use this approach, which considers all of the phonons in the first Brillouin-zone, to assess the suitability of common a...
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ژورنال
عنوان ژورنال: Computer Physics Communications
سال: 2015
ISSN: 0010-4655
DOI: 10.1016/j.cpc.2015.01.008