Publication result detail

Thermal diffusivity measurements using dual probe Scanning Thermal Microscopy

MARTINEK, J.; HORTVIK, V.; VALTR, M.; KLAPETEK, P.

Original Title

Thermal diffusivity measurements using dual probe Scanning Thermal Microscopy

English Title

Thermal diffusivity measurements using dual probe Scanning Thermal Microscopy

Type

WoS Article

Original Abstract

We present a novel dual probe Scanning Thermal Microscopy setup and methodology for addressing measurements of thermal diffusivity using two microscale thermal probes placed at mutual distance between 1 to 60 mu m, monitoring propagation of heat pulses from one probe to another one through the studied sample. It is shown that even if the measured heat pulses are very weak in this configuration, they can be measured if the heat transfer via air is reduced by measuring in vacuum, radiative heat transfer is reduced by suitable measurement protocol and many pulses are averaged. Resulting signals show the expected dependencies and thermal diffusivity can be evaluated from them with a help of a numerical modeling. Diffusivity measurements are demonstrated on glasses and polymer samples and potential uncertainty sources are identified.

English abstract

We present a novel dual probe Scanning Thermal Microscopy setup and methodology for addressing measurements of thermal diffusivity using two microscale thermal probes placed at mutual distance between 1 to 60 mu m, monitoring propagation of heat pulses from one probe to another one through the studied sample. It is shown that even if the measured heat pulses are very weak in this configuration, they can be measured if the heat transfer via air is reduced by measuring in vacuum, radiative heat transfer is reduced by suitable measurement protocol and many pulses are averaged. Resulting signals show the expected dependencies and thermal diffusivity can be evaluated from them with a help of a numerical modeling. Diffusivity measurements are demonstrated on glasses and polymer samples and potential uncertainty sources are identified.

Keywords

Thermal diffusivity; Microscopy; Metrology

Key words in English

Thermal diffusivity; Microscopy; Metrology

Authors

MARTINEK, J.; HORTVIK, V.; VALTR, M.; KLAPETEK, P.

RIV year

2026

Released

01.02.2026

Periodical

International Journal of Thermal Sciences

Volume

220

Number

A

State

French Republic

Pages from

1

Pages to

8

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S1290072925006167

Full text in the Digital Library

http://hdl.handle.net/11012/255828

BibTex

@article{BUT200082,
  author="Jan {Martinek} and  {} and Miroslav {Valtr} and Petr {Klapetek}",
  title="Thermal diffusivity measurements using dual probe Scanning Thermal Microscopy",
  journal="International Journal of Thermal Sciences",
  year="2026",
  volume="220",
  number="A",
  pages="8",
  doi="10.1016/j.ijthermalsci.2025.110293",
  issn="1290-0729",
  url="https://www.sciencedirect.com/science/article/pii/S1290072925006167"
}