Uli F. Wischnath et.al.: The near-field scanning thermal microscope
- Author(s):
Uli F. Wischnath, Joachim Welker, Marco Munzel, Achim Kittel
- Title:
The near-field scanning thermal microscope
- Article:
Rev. Sci. Instrum. 79, 073708 (2008), American Institute of Physics
- Keywords:
NSThM, near-field scanning thermal microscope, near-field
- PACS:
07.20.Dt, 42.79.Pw, 07.79.Cz
- Abstract:
- 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.
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