New Model For lattice thermal Conductivity across Boundaries - Softcover

Alameh, Zainab

Softcover

ISBN 10: 3659321907 ISBN 13: 9783659321900

Verlag: LAP LAMBERT Academic Publishing, 2013

Über diesen Titel

Reseña del editor:

We have developed a theoretical model to predict the thermal conductivity across the boundary between two solids. Our approach is based on solving Boltzmann equation taking into account all the physical aspects of the phonon scattering mechanisms. Distinction between normal processes which tend to displace the phonon distribution from its equilibrium one and resistive processes which restore it back is emphasized in our analysis. Lattice vibration parameters that enter in the thermal conductivity calculation, the Debye temperature and the Gruneissen paramter, are taken to be temperature dependent. At the boundary, we consider that transmission of phonons can be diffusive or specular, the probability of each depends on incident phonon characteristics such as its incidence angle and wavelength, as well as the interface roughness. With this theoretical model in hand, the thermal conductivity of polycrystalline materials can be calculated. As a second application of our new model, we employ it to predict materials that can be used in the form of nanostructured superlattices to obtain systems of extremely low thermal conductivity.

Biografía del autor:

Ms. Zeinab Alameh earned her Maters in Physics in 2012, and planning to pursue her PhD in Materials Engineering. During her graduate studies, she started working on theoretical and computational aspects of solid states physics with focus on thermal properties of crystalline solids.

Über diese Auflage

• Verlag: LAP LAMBERT Academic Publishing
• Erscheinungsdatum: 2013
• ISBN 10: 3659321907
• ISBN 13: 9783659321900
• Einband: Tapa blanda
• Anzahl der Seiten: 60