Premium
The heat transfer between a heated tip and a substrate: fast thermal microscopy
Author(s) -
Dransfeld K.,
Xu J.
Publication year - 1988
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1988.tb01359.x
Subject(s) - heat transfer , substrate (aquarium) , thermal , materials science , coherence (philosophical gambling strategy) , chemical physics , infrared , field (mathematics) , optics , mechanics , chemistry , thermodynamics , physics , oceanography , quantum mechanics , geology , mathematics , pure mathematics
SUMMARY Here we describe a new mechanism of heat transfer between two solids separated by a distance. This mechanism does not involve the ambient air or adsorbed vapour films, and is therefore expected to remain active under perfect vacuum conditions. As will be described in detail, thermal charge fluctuations of one solid substrate kept at finite temperatures create an electromagnetic field—at infrared frequencies and of a short coherence length—which extends across the gap and effectively transports heat to the other solid. In our view this mechanism is responsible for the effective heat transfer observed recently by C. C. Williams and H. K. Wickramasinghe between a heated tip and a substrate.