Observation of Radiation Diffusion Heat Transfer in Microscale Membranes

Avijit Das; Andrew Brown; Merlin Mah; Joseph Talghader

doi:10.1109/OMN.2019.8925225

Observation of Radiation Diffusion Heat Transfer in Microscale Membranes

Avijit Das, Andrew Brown, Merlin Mah, Joseph Talghader

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Radiation diffusion was investigated as a heat transfer mechanism in highly absorbing microscale graphite. A 50\mum thick graphite sheet was heated by a 1064 nm Nd:YAG continuous wave (CW) laser with optical intensities of 10 kW/cm² and 20 kW/cm². Extremely high temperatures (i.e., \geq2000 K) were achieved on the graphite sheet within miliseconds, which were measured by a two-color pyrometer. The recorded temperatures were later compared with numerical solutions of differential heat conduction equation. A close match was found between numerical and experimental results only when radiation diffusion was incorporated in the thermal conductivity along with the lattice vibration.

Original language	English (US)
Title of host publication	OMN 2019 - 2019 International Conference on Optical MEMS and Nanophotonics, Proceedings
Publisher	IEEE Computer Society
Pages	20-21
Number of pages	2
ISBN (Electronic)	9781728145013
DOIs	https://doi.org/10.1109/OMN.2019.8925225
State	Published - Jul 2019
Event	2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019 - Daejeon, Korea, Republic of Duration: Jul 28 2019 → Aug 1 2019

Publication series

Name	International Conference on Optical MEMS and Nanophotonics
Volume	2019-July
ISSN (Print)	2160-5033
ISSN (Electronic)	2160-5041

Conference

Conference	2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019
Country/Territory	Korea, Republic of
City	Daejeon
Period	7/28/19 → 8/1/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

Keywords

Radiation diffusion
graphite
heat transfer
photon diffusion

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10.1109/OMN.2019.8925225

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Das, A., Brown, A., Mah, M., & Talghader, J. (2019). Observation of Radiation Diffusion Heat Transfer in Microscale Membranes. In OMN 2019 - 2019 International Conference on Optical MEMS and Nanophotonics, Proceedings (pp. 20-21). Article 8925225 (International Conference on Optical MEMS and Nanophotonics; Vol. 2019-July). IEEE Computer Society. https://doi.org/10.1109/OMN.2019.8925225

Observation of Radiation Diffusion Heat Transfer in Microscale Membranes. / Das, Avijit; Brown, Andrew; Mah, Merlin et al.
OMN 2019 - 2019 International Conference on Optical MEMS and Nanophotonics, Proceedings. IEEE Computer Society, 2019. p. 20-21 8925225 (International Conference on Optical MEMS and Nanophotonics; Vol. 2019-July).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Das, A, Brown, A, Mah, M & Talghader, J 2019, Observation of Radiation Diffusion Heat Transfer in Microscale Membranes. in OMN 2019 - 2019 International Conference on Optical MEMS and Nanophotonics, Proceedings., 8925225, International Conference on Optical MEMS and Nanophotonics, vol. 2019-July, IEEE Computer Society, pp. 20-21, 2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019, Daejeon, Korea, Republic of, 7/28/19. https://doi.org/10.1109/OMN.2019.8925225

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abstract = "Radiation diffusion was investigated as a heat transfer mechanism in highly absorbing microscale graphite. A 50\mum thick graphite sheet was heated by a 1064 nm Nd:YAG continuous wave (CW) laser with optical intensities of 10 kW/cm2 and 20 kW/cm2. Extremely high temperatures (i.e., \geq2000 K) were achieved on the graphite sheet within miliseconds, which were measured by a two-color pyrometer. The recorded temperatures were later compared with numerical solutions of differential heat conduction equation. A close match was found between numerical and experimental results only when radiation diffusion was incorporated in the thermal conductivity along with the lattice vibration.",

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Observation of Radiation Diffusion Heat Transfer in Microscale Membranes

Abstract

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Keywords

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