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Role of radiation in heat transfer from nanoparticles to gas media in photothermal measurements

Author

Listed:
  • Qing Xi

    (Center for Phononics and Thermal Energy Science, China-EU Joint Lab for Nanophononics, Shanghai Key Laboratory of Special Artificial, Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, P. R. China)

  • Yunyun Li

    (Center for Phononics and Thermal Energy Science, China-EU Joint Lab for Nanophononics, Shanghai Key Laboratory of Special Artificial, Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, P. R. China)

  • Jun Zhou

    (Center for Phononics and Thermal Energy Science, China-EU Joint Lab for Nanophononics, Shanghai Key Laboratory of Special Artificial, Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, P. R. China)

  • Baowen Li

    (#x2020;Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, CO 80389, America)

  • Jun Liu

    (#x2021;Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695, America)

Abstract

The heat transfer from nanoparticles (NPs) to gas of photothermal effect is investigated by taking into account both conduction and radiation. The steady-state and unsteady-state heat transfer processes are studied analytically and numerically, respectively. In contrast to the photothermal effect in liquid with metal NPs, in which the radiation is negligible, we found that the thermal radiation must be taken into account in the nanoparticle–gas system. The reason is that the thermal boundary conductance (TBC) of gas–solid interface is several orders of magnitude smaller than the TBC of liquid–solid interface, especially when the diameter of nanoparticle is comparable to or smaller than the mean free path of gas molecules. We propose a method to measure the ultra-low TBC of interface between nanoparticle and gas based on our investigations.

Suggested Citation

  • Qing Xi & Yunyun Li & Jun Zhou & Baowen Li & Jun Liu, 2019. "Role of radiation in heat transfer from nanoparticles to gas media in photothermal measurements," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 30(04), pages 1-9, April.
    • Handle: RePEc:wsi:ijmpcx:v:30:y:2019:i:04:n:s0129183119500244
    DOI: 10.1142/S0129183119500244
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