Observation of Radiation Diffusion Heat Transfer in Microscale Membranes

Avijit Das, Andrew Brown, Merlin Mah, Joseph Talghader

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish (US)
Title of host publicationOMN 2019 - 2019 International Conference on Optical MEMS and Nanophotonics, Proceedings
PublisherIEEE Computer Society
Pages20-21
Number of pages2
ISBN (Electronic)9781728145013
DOIs
StatePublished - Jul 2019
Event2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019 - Daejeon, Korea, Republic of
Duration: Jul 28 2019Aug 1 2019

Publication series

NameInternational Conference on Optical MEMS and Nanophotonics
Volume2019-July
ISSN (Print)2160-5033
ISSN (Electronic)2160-5041

Conference

Conference2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019
CountryKorea, Republic of
CityDaejeon
Period7/28/198/1/19

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Keywords

  • graphite
  • heat transfer
  • photon diffusion
  • Radiation diffusion

Cite this

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). [8925225] (International Conference on Optical MEMS and Nanophotonics; Vol. 2019-July). IEEE Computer Society. https://doi.org/10.1109/OMN.2019.8925225