Laser flash-Raman spectroscopy method for the measurement of the thermal properties of micro/nano wires

Jinhui Liu; Haidong Wang; Yudong Hu; Weigang Ma; Xing Zhang

doi:10.1063/1.4904868

Laser flash-Raman spectroscopy method for the measurement of the thermal properties of micro/nano wires

Jinhui Liu, Haidong Wang, Yudong Hu, Weigang Ma, Xing Zhang

Thermal Engineering

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

This paper introduces a new method for measuring the thermal diffusivity and thermal conductivity of individual micro/nano wires using Raman spectroscopy. This method uses a focused short pulsed laser and a continuous-wave laser in a Raman spectroscopy system as the local heater, Raman signal excitation source, and temperature sensor. Unsteady and steady thermal conduction models are used to get two independent equations for the thermal diffusivity (α) and laser absorptivity (η). This new method is verified by comparing experimental results for graphite carbon fiber with measurement using the 3ω method. The method was then used to measure the temperature dependent thermal diffusivity and thermal conductivity of individual carbon nanotubes.

Original language	English
Article number	014901
Journal	Review of Scientific Instruments
Volume	86
Issue number	1
DOIs	https://doi.org/10.1063/1.4904868
Publication status	Published - Jan 1 2015

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.4904868

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title = "Laser flash-Raman spectroscopy method for the measurement of the thermal properties of micro/nano wires",

abstract = "This paper introduces a new method for measuring the thermal diffusivity and thermal conductivity of individual micro/nano wires using Raman spectroscopy. This method uses a focused short pulsed laser and a continuous-wave laser in a Raman spectroscopy system as the local heater, Raman signal excitation source, and temperature sensor. Unsteady and steady thermal conduction models are used to get two independent equations for the thermal diffusivity (α) and laser absorptivity (η). This new method is verified by comparing experimental results for graphite carbon fiber with measurement using the 3ω method. The method was then used to measure the temperature dependent thermal diffusivity and thermal conductivity of individual carbon nanotubes.",

author = "Jinhui Liu and Haidong Wang and Yudong Hu and Weigang Ma and Xing Zhang",

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AU - Liu, Jinhui

AU - Wang, Haidong

AU - Hu, Yudong

AU - Ma, Weigang

AU - Zhang, Xing

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This paper introduces a new method for measuring the thermal diffusivity and thermal conductivity of individual micro/nano wires using Raman spectroscopy. This method uses a focused short pulsed laser and a continuous-wave laser in a Raman spectroscopy system as the local heater, Raman signal excitation source, and temperature sensor. Unsteady and steady thermal conduction models are used to get two independent equations for the thermal diffusivity (α) and laser absorptivity (η). This new method is verified by comparing experimental results for graphite carbon fiber with measurement using the 3ω method. The method was then used to measure the temperature dependent thermal diffusivity and thermal conductivity of individual carbon nanotubes.

AB - This paper introduces a new method for measuring the thermal diffusivity and thermal conductivity of individual micro/nano wires using Raman spectroscopy. This method uses a focused short pulsed laser and a continuous-wave laser in a Raman spectroscopy system as the local heater, Raman signal excitation source, and temperature sensor. Unsteady and steady thermal conduction models are used to get two independent equations for the thermal diffusivity (α) and laser absorptivity (η). This new method is verified by comparing experimental results for graphite carbon fiber with measurement using the 3ω method. The method was then used to measure the temperature dependent thermal diffusivity and thermal conductivity of individual carbon nanotubes.

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Laser flash-Raman spectroscopy method for the measurement of the thermal properties of micro/nano wires

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