Measurement of Apparent Thermal Conductivity and Laser Absorptivity of Individual Carbon Fibers

Jin hui Liu, Hai dong Wang, Yu dong Hu, Wei gang Ma, Xing Zhang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The apparent thermal conductivity (ATC) and laser absorptivity (α) are important properties of miro/nano materials but a challenge to measure due to their small size. In this paper, a simple and effective method employing Raman spectroscopy together with electrical heating is developed to measure thermal properties of micro/nano wires. The sample used in the experiment is very simple and easy to fabricate. The ATC is obtained by measuring the temperature difference induced by changing the electrical heating power; the laser heating power is neither neglected nor needed. Using the laser heating temperature rise and the measured ATC, the absorbed laser power can be calculated. Three individual carbon fibers were studied using the presented method.

Original languageEnglish
Pages (from-to)2740-2747
Number of pages8
JournalInternational Journal of Thermophysics
Volume36
Issue number10-11
DOIs
Publication statusPublished - Nov 1 2015

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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