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Méthodologie de calibration DC/AC de sondes thermorésistives pour la microscopie thermique. Applications à la quantification des échanges pointe/environnements et à la mesure de résistances thermiques de contact

Abstract : This PhD-thesis work focuses on the characterization of heat transport in nanomaterials by scanning thermal microscopy (SThM). This technique is used to measure the thermal properties of micro-objects at the scale of a few tens of nanometers. Achieving quantitative measurements at these scales remains a challenge due to the complexity of the heat exchanges at the interface between the probe and the sample. To address these issues, we have developed an experimental bench to control the environment and thus control the heat transfer modes. We have also set up a frequency approach (3ω) for the thermal study. The experimental signals obtained on this bench were compared and analyzed using detailed finite element modeling of the SThM tip. In this framework we have demonstrated the reliability of our bench to study materials with a thermal conductivity between 0.1 and 100 W/m.K.
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Submitted on : Tuesday, May 18, 2021 - 5:30:07 PM
Last modification on : Wednesday, November 3, 2021 - 7:10:24 AM

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  • HAL Id : tel-03229191, version 1

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Anas Metjari. Méthodologie de calibration DC/AC de sondes thermorésistives pour la microscopie thermique. Applications à la quantification des échanges pointe/environnements et à la mesure de résistances thermiques de contact. Thermique [physics.class-ph]. Université de Lorraine, 2020. Français. ⟨NNT : 2020LORR0291⟩. ⟨tel-03229191⟩

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