The description of SThM - Scanning Thermal Miscroscopy
Scanning Thermal Microscopy and related techniques allow to investigate the thermal properties of the surface in three following modes:
Passive mode bases on local temperature detection with the probe.
- passive mode (local temperature of the sample),
- active mode (thermal conductivity),
- thermal microanalysis (detection of specific materials due to the response for the local temperature increase).
In order to detect locally the temperature of the sample, the special probes, providing the temperature measurement and heat applying are utilized.
Active mode bases on the measurement of the energy transported from the probe to the surface, while the feedback is providing the constant temperature of the surface.
Thermal microanalysis mode bases on the observation of the changes of the height of the sample, while its temperature increases due to providing the heat transport from the probe.
Examples (click to enlarge)