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Article Dans Une Revue Review of Scientific Instruments Année : 2005

3 omega-scanning thermal microscope

Résumé

We present the theoretical and experimental calibrations of a scanning thermal microscope (SThM) based on a hot anemometer wire probe. Under ac heating and due to the linear dependence of the probe electrical resistance to temperature, the third harmonic of the tip voltage is also linear to the temperature. This method called "3-omega" is currently used to estimate the thermal properties with a hot strip deposited on the sample surface. However, in this last technique, the sensor size allows one to reach the sample transient thermal behavior whereas the SThM tip does not. We propose a thermal model showing what information can in fact be obtained by using the microscope under the 3 omega mode. We finally report an experimental calibration providing the tip/sample contact thermal parameters

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Dates et versions

hal-00126024 , version 1 (23-01-2007)

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S. Lefebvre, Sebastian Volz. 3 omega-scanning thermal microscope. Review of Scientific Instruments, 2005, 76 (3), pp.Art. No. 033701. ⟨10.1063/1.1857151⟩. ⟨hal-00126024⟩
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