D.C. scanning thermal microscopy: Characterisation and interpretation of the measurement |
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| Authors: | Sverine Gomes Nathalie Trannoy Philippe Grossel Franoise Depasse Claudine Bainier Daniel Charraut |
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| Affiliation: | a Unité de Thermique et d'Analyse Physique, Laboratoire d'Energétique et d'Optique, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims cedex 2, France;b Laboratoire d'optique P.M. Duffieux, UMR 6603, Institut des Microtechniques de Franche-Comté, U.F.R Sciences et Techniques, 16 route de Gray, 25030 Besançon cedex, France |
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| Abstract: | The used Scanning Thermal Microscopy (SThM) probe is a thin Pt resistance wire acting as a heat source and as a detector simultaneously. Its energetic balance is investigated by the study of the temperature profile along the probe. A theoretical approach of the measurement, based on this investigation, is then proposed. Simulations with this modelling are shown to predict how the heat, electrically produced in the probe, is dissipated in the probe-sample system. In particular, it is shown that the steady-state of conduction losses to the thermal element support varies versus the thermal conductivity of the sample and can lead to bad interpretations of the measurement. |
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| Keywords: | scanning thermal microscopy thermal probe tip-sample interaction thermal conductivity thermal contact thermal coupling |
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