Thermal conductivity measurements of thin films by non-contact scanning thermal microscopy under ambient conditions.

ABSTRACT: Thermal conductivity measurements using Scanning Thermal Microscopy (SThM) usually involve heat transfer across the mechanical contact and liquid meniscus between the thermal probe and the sample. However, variations in contact conditions due to capillary effects at probe-sample contact and probe and sample wear due to mechanical contact interfere with accurate determination of the thermal conductivity. This paper presents measurements of thin film thermal conductivity using a SThM method employing a Wollaston probe in non-contact mode in synergy with detailed heat transfer analysis. In this technique, the thermal probe is scanned above the sample at a distance comparable with the mean free path of the ambient gas molecules. A Three-Dimensional Finite Element Model (3DFEM) that includes th

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC9417296 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature