The near-field scanning thermal microscope

We report on the design, characterization, and performance of a near-field scanning thermal microscope capable to detect thermal heat currents mediated by evanescent thermal electromagnetic fields close to the surface of a sample. The instrument operates in ultrahigh vacuum and retains its scanning...

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Bibliographic Details
Published in:Review of scientific instruments 2008-07, Vol.79 (7), p.073708-073708-7
Main Authors: Wischnath, Uli F., Welker, Joachim, Munzel, Marco, Kittel, Achim
Format: Article
Language:English
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Summary:We report on the design, characterization, and performance of a near-field scanning thermal microscope capable to detect thermal heat currents mediated by evanescent thermal electromagnetic fields close to the surface of a sample. The instrument operates in ultrahigh vacuum and retains its scanning tunneling microscope functionality, so that its miniature, micropipette-based thermocouple sensor can be positioned with high accuracy. Heat currents on the order of 10 − 7 W are registered in z spectroscopy at distances from the sample ranging from 1 to about 30 nm . In addition, the device provides detailed thermographic images of a sample's surface.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.2955764