Showing papers by "Michel Kazan published in 2010"
TL;DR: In this article, a rigorous analysis of the thermal conductivity of bulk silicon (Si) and Si nanowires (Si NWs) is presented, which takes into account the exact physical nature of the various acoustic and optical phonon mechanisms.
Abstract: We present a rigorous analysis of the thermal conductivity of bulk silicon (Si) and Si nanowires (Si NWs) which takes into account the exact physical nature of the various acoustic and optical phonon mechanisms. Following the Callaway solution for the Boltzmann equation, where resistive and nonresistive phonon mechanisms are discriminated, we derived formalism for the lattice thermal conductivity that takes into account the phonon incidence angles. The phonon scattering processes are represented by frequency-dependent relaxation time. In addition to the commonly considered acoustic three-phonon processes, a detailed analysis of the role of the optical phonon decay into acoustic phonons is performed. This optical phonon decay mechanism is considered to act as acoustic phonon generation rate partially counteracting the acoustic phonon scattering rates. We have derived the analytical expression describing this physical mechanism which should be included in the general formalism as a correction to the resisti...
100 citations
TL;DR: In this article, the authors provide a critical and up-to-date survey of the analytical approximation methods that are encountered in interface thermal conductance, including the acoustic mismatch model and the diffuse mismatch model.
22 citations
TL;DR: This work reports on the deposition of noble metal NC at the surface of InGaN/GaN multiple quantum wells (MQW), with efficient light emission in the visible range, and investigates the surface organization of Ag and Au NCs with sizes ranging from 5-30 nm as a function of deposition conditions.
Abstract: Paper discussing noble metal nanocrystals at the surface of nitride semiconductors: synthesis, deposition and surface characterisation.
1 citations