Cited by 184Thermography and Photoacoustic TechniquesThermal properties of materialsRadiative Heat Transfer Studies

An optical pump-probe technique for measuring the thermal conductivity of liquids

Schmidt, Aaron, Chiesa, Matteo, Chen, Xiaoyuan, Chen, Gang·2008·Review of Scientific Instruments

Abstract

We present a pump-probe optical technique for measuring the thermal conductivity of liquids. The technique uses a reflective geometry which does not depend on the optical properties of the liquid and requires as little as a single droplet to produce a result. An analytical solution is given for bidirectional heat flow in layered media, including the effects of radial heat flow from coaxial Gaussian laser spots, thermal interface resistances, and the accumulation of multiple laser pulses. In addition, several experimental improvements over previous pump-probe configurations are described, resulting in an improved signal to noise ratio and smaller errors at long stage delay times. The technique is applied to a range of liquids and solids. Results are in good agreement with literature values.

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Crossref · 10.1063/1.2937458

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  • The two-tint and two-color approaches can effectively filter the reflected pump beam but at a significant sacrifice of laser power.

    “Both the two-tint and the two-color approach can effectively filter the reflected pump beam but at a significant sacrifice of the laser power.”
  • TDTR can also be applied to characterize thermal properties of liquids and fluids, such as the thermal conductivity/heat capacity of liquids, thermal conductance of solid/liquid interfaces, the heat transfer coefficient of fluids during evaporation, condensation, microchannel cooling, and flow boiling.

    “For example, TDTR can also be applied to characterize thermal properties of liquids and fluids, such as the thermal conductivity/heat capacity of liquids, 103 thermal conductance of solid/liquid interfaces, 80, 233, 234 the heat transfer coefficient of fluids during evaporation, 235, 236 condensation, 237 microchannel cooling, 238 and flow boiling. 239”

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Authors
Schmidt, A., Chiesa, M., Chen, X., & Chen, G.
Affiliations
Massachusetts Institute of Technology (US)
Venue
Review of Scientific Instruments
Published
2008-06-01
Volume
79
Issue
6
Pages
064902-064902
ISSN
  • 0034-6748 (ISSN-L)
  • 1089-7623
OpenAlex
W2071365268
Cited by
184
References
14
Citations by year
2026: 8 · 2025: 12 · 2024: 5 · 2023: 10 · 2022: 19 · 2021: 13 · 2020: 11 · 2019: 10 · 2018: 12 · 2017: 16 · 2016: 9 · 2015: 6 · 2014: 9 · 2013: 8 · 2012: 13
FWCI
12.29
Type
journal article
Language
en
Open access
closed
Locations
  • Review of Scientific Instruments (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Engineering › Mechanics of Materials › Thermography and Photoacoustic Techniques
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
  • Physical Sciences › Engineering › Computational Mechanics › Radiative Heat Transfer Studies
Keywords
thermal conductivity measurement, liquids, pump-probe spectroscopy, optical pump-probe, droplets, layered media, interfacial thermal resistance, multiple laser pulses, signal-to-noise ratio, solids

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