Laser flash Raman spectroscopy method for thermophysical characterization of 2D nanomaterials

Qin Yi Li, Xing Zhang, Yu Dong Hu

研究成果: Contribution to journalArticle査読

22 被引用数 (Scopus)

抄録

Recently, a noncontact technique based on the temperature dependent Raman band shift has been applied for thermophysical characterization of low dimensional nanomaterials. However, the difficulty of accurately determining the laser absorption significantly limits the accuracy of this Raman technique. This paper presents a transient "laser flash Raman spectroscopy" method to characterize the thermal diffusivity, thermal conductivity and thermal contact resistance of 2D nanomaterials and the laser absorption can be easily eliminated by a normalization technique. The thermophysical properties can be determined by fitting the curves of the normalized temperature rise versus the laser heating time for various laser spot radii. Moreover, if the thermal contact resistance is neglected, the data analysis process is much more convenient and the relative error caused by neglecting the thermal contact resistance is only 1%.

本文言語英語
ページ(範囲)67-72
ページ数6
ジャーナルThermochimica Acta
592
DOI
出版ステータス出版済み - 9 20 2014
外部発表はい

All Science Journal Classification (ASJC) codes

  • 器械工学
  • 凝縮系物理学
  • 物理化学および理論化学

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