DOI: 10.1063/1.4935987. Limits to Fourier theory in high thermal conductivity single crystals

Limits to Fourier theory in high thermal conductivity single crystals

10.1063/1.4935987

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

We report the results of time-domain thermoreflectance (TDTR) experiments that examine the ability of Fourier theory to predict the thermal response in single crystals when heater dimensions are small. We performed TDTR measurements on Al-coated diamond, 6H-SiC, GaP, Ge, MgO, GaAs, and GaSb single crystals with a wide range of laser spot size radii, 0.7 μm &lt; w0 &lt; 12 μm. When the laser spot-size is large, w0 ≈ 12 μm, TDTR data for all crystals are in agreement with predictions of Fourier theory with bulk thermal conductivity values. When the laser spot-size is small, w0 &lt; 2 μm, there are significant differences between the predictions of Fourier theory and TDTR data for all crystals except MgO.

Bibliography

Wilson, R. B., & Cahill, D. G. (2015). Limits to Fourier theory in high thermal conductivity single crystals. Applied Physics Letters, 107(20).

Authors 2

R. B. Wilson (first)
David G. Cahill (additional)

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Dates

Type	When
Created	9 years, 9 months ago (Nov. 18, 2015, 1 p.m.)
Deposited	2 years, 2 months ago (June 17, 2023, 7:07 p.m.)
Indexed	22 minutes ago (Aug. 28, 2025, 5:55 p.m.)
Issued	9 years, 9 months ago (Nov. 16, 2015)
Published	9 years, 9 months ago (Nov. 16, 2015)
Published Online	9 years, 9 months ago (Nov. 18, 2015)
Published Print	9 years, 9 months ago (Nov. 16, 2015)

Funders 1

Air Force Office of Scientific Research 10.13039/100000181
Region: Americas
gov (National government)
Labels4
1. AF Office of Scientific Research
2. US Air Force Office of Scientific Research
3. United States Air Force Office of Scientific Research
4. AFOSR
Awards1
1. AF FA9550-12-1-0073

BibTeX

@article{Wilson_2015, title={Limits to Fourier theory in high thermal conductivity single crystals}, volume={107}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.4935987}, DOI={10.1063/1.4935987}, number={20}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Wilson, R. B. and Cahill, David G.}, year={2015}, month=nov }

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