Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1564460 | Computational Materials Science | 2006 | 5 Pages |
Abstract
Using molecular-dynamics simulation, we find that the Kapitza effect-that is the thermal interface resistance responsible for the temperature jump at interfaces in heat diffusion phenomena-plays an important role in the case that a metal surface, which is adjacent to a transparent liquid dielectric, is heated by an ultrafast laser pulse. We observe a temperature jump with a width of three monolayers of the dielectric. Beyond the jump, the temperature profile in the dielectric is well described using analytical solutions of the appropriate heat conduction problem. This allows to determine the thermal interface resistance and the thermal diffusivity in the dielectric. The Kapitza effect is found to considerably delay the heat transfer to the dielectric.
Related Topics
Physical Sciences and Engineering
Engineering
Computational Mechanics
Authors
Herbert M. Urbassek, Xiang Gu, Baerbel Rethfeld,