2008.12.10

31B, Eigineering 2nd Bld, Hongo Campus

Dr. Sebastian VOLZ

Senior Research Scientist of the CNRS

LIMMS, UMI CNRS 2820-IIS

Center for International Research on MicroMechatronics, CIRMM

Institute of Industrial Science, University of Tokyo.

on the leave from

Laboratoire d'Energétique Moléculaire et Macroscopique, Combustion, UPR 288

ECOLE CENTRALE PARIS/CNRS, 92295 Chatenay Malabry FRANCE

Title：Radiation and Heat Conduction at Small Space Scales

Schedule：10th Dec 2008 12:00 ~ 13:30

Place：31B, Engineering 2nd Bld, Hongo Campus 

Map：http://www.u-tokyo.ac.jp/campusmap/cam01_04_03_j.html

Abstract： Recent developments in Radiation and Heat Conduction at short space scales will be adressed. In the first place, Near-Field effects in radiation will be exposed through the several order of magnitude increase of the heat flux between two bodies separated by a few nanometer length. This very remarkable effect was first mentioned in the case of polar materials such as SiO₂, Al₂O₃ and SiC but we proved that the magnetic contribution commonly known as Foucault current and which was previously put aside, is actually predominating in the case if interacting metallic bodies.

Issues related to nanoscale thermal contact resistance are then introduced especially regarding to the phonon rarefaction and even to the wave confinement. Reasoning on the low temperatures – nanoscale thermal contact resistance leads to an original understanding of the respective contributions of the contact itself and the three-dimensional heat exchanging bodies to the thermal transfer.