Numéro
J. Phys. IV France
Volume 04, Numéro C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
Page(s) C7-331 - C7-334
DOI https://doi.org/10.1051/jp4:1994779
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique

J. Phys. IV France 04 (1994) C7-331-C7-334

DOI: 10.1051/jp4:1994779

Surface roughness effect as a source of hyperdiffusion ?

D. Vandembroucq1, A.C. Boccara1 and D. Fournier2

1  Laboratoire d'Optique, ESPCI, UPR A0005 du CNRS, 10 rue Vauquelin, 75231 Paris cedex 05, France
2  Laboratoire d'Instrumentation, UPMC, UPR A0005 du CNRS, 10 rue Vauquelin, 75231 Paris cedex 05, France


Abstract
We have studied heat diffusion from rough surfaces in different materials exposed to a constant heating and we observed anomalously slow temperature rises over about 3 time decades which indicate a hyperdiffusion phenomenon.



© EDP Sciences 1994