Measurement of thermal contact resistance between individual carbon fibers using a laser-flash Raman mapping method

Qinyi Li, Koki Katakami, Tatsuya Ikuta, Masamichi Kohno, Xing Zhang, Koji Takahashi

Research output: Contribution to journalArticle

Abstract

Thermal contact resistance (TCR) between individual carbon fibers (CFs) can dominate heat dissipation rates in CF-based composite materials. Here, we develop a totally non-contact “laser-flash Raman mapping” method to simultaneously measure the TCR at the CF-CF junction and their thermal conductivities. Laser power is used to heat the sample and the laser absorptivity is experimentally determined by a transient laser-flash Raman technique. The laser heating positions are changed along two connected CFs, and the change of temperature rise with varying positions is in-situ measured from the temperature dependent Raman band shifts. The high spatial resolution of the micro-Raman mapping allows direct observation of the abrupt jump of thermal resistance at the CF-CF junction, from which we extracted the TCR as well as the thermal conductivity. The laser absorptivity of the 11 μm-diameter CFs is measured to be 0.12 ± 0.03, the thermal conductivities of the individual CFs are around 200 W/mK, and the TCR of the CF-CF junction is (2.98 ± 0.92) × 105 K/W. This work provides indispensable knowledge for the design of CF-based composite for thermal management, and the novel non-contact measurement method can stimulate characterization and manipulation of contact/interface heat conduction between various micro- and nano-materials.

LanguageEnglish
Pages92-98
Number of pages7
JournalCarbon
Volume141
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Thermal conductivity of solids
Thermal diffusivity
Contact resistance
Heat conduction
Thermal conductivity
Lasers
Hot Temperature
carbon fiber
Laser heating
Composite materials
Heat losses
Heat resistance
Temperature control

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Measurement of thermal contact resistance between individual carbon fibers using a laser-flash Raman mapping method. / Li, Qinyi; Katakami, Koki; Ikuta, Tatsuya; Kohno, Masamichi; Zhang, Xing; Takahashi, Koji.

In: Carbon, Vol. 141, 01.01.2019, p. 92-98.

Research output: Contribution to journalArticle

@article{ed7753e9d3e7413bae5db722cb6d6165,
title = "Measurement of thermal contact resistance between individual carbon fibers using a laser-flash Raman mapping method",
abstract = "Thermal contact resistance (TCR) between individual carbon fibers (CFs) can dominate heat dissipation rates in CF-based composite materials. Here, we develop a totally non-contact “laser-flash Raman mapping” method to simultaneously measure the TCR at the CF-CF junction and their thermal conductivities. Laser power is used to heat the sample and the laser absorptivity is experimentally determined by a transient laser-flash Raman technique. The laser heating positions are changed along two connected CFs, and the change of temperature rise with varying positions is in-situ measured from the temperature dependent Raman band shifts. The high spatial resolution of the micro-Raman mapping allows direct observation of the abrupt jump of thermal resistance at the CF-CF junction, from which we extracted the TCR as well as the thermal conductivity. The laser absorptivity of the 11 μm-diameter CFs is measured to be 0.12 ± 0.03, the thermal conductivities of the individual CFs are around 200 W/mK, and the TCR of the CF-CF junction is (2.98 ± 0.92) × 105 K/W. This work provides indispensable knowledge for the design of CF-based composite for thermal management, and the novel non-contact measurement method can stimulate characterization and manipulation of contact/interface heat conduction between various micro- and nano-materials.",
author = "Qinyi Li and Koki Katakami and Tatsuya Ikuta and Masamichi Kohno and Xing Zhang and Koji Takahashi",
year = "2019",
month = "1",
day = "1",
doi = "10.1016/j.carbon.2018.09.034",
language = "English",
volume = "141",
pages = "92--98",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Measurement of thermal contact resistance between individual carbon fibers using a laser-flash Raman mapping method

AU - Li, Qinyi

AU - Katakami, Koki

AU - Ikuta, Tatsuya

AU - Kohno, Masamichi

AU - Zhang, Xing

AU - Takahashi, Koji

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Thermal contact resistance (TCR) between individual carbon fibers (CFs) can dominate heat dissipation rates in CF-based composite materials. Here, we develop a totally non-contact “laser-flash Raman mapping” method to simultaneously measure the TCR at the CF-CF junction and their thermal conductivities. Laser power is used to heat the sample and the laser absorptivity is experimentally determined by a transient laser-flash Raman technique. The laser heating positions are changed along two connected CFs, and the change of temperature rise with varying positions is in-situ measured from the temperature dependent Raman band shifts. The high spatial resolution of the micro-Raman mapping allows direct observation of the abrupt jump of thermal resistance at the CF-CF junction, from which we extracted the TCR as well as the thermal conductivity. The laser absorptivity of the 11 μm-diameter CFs is measured to be 0.12 ± 0.03, the thermal conductivities of the individual CFs are around 200 W/mK, and the TCR of the CF-CF junction is (2.98 ± 0.92) × 105 K/W. This work provides indispensable knowledge for the design of CF-based composite for thermal management, and the novel non-contact measurement method can stimulate characterization and manipulation of contact/interface heat conduction between various micro- and nano-materials.

AB - Thermal contact resistance (TCR) between individual carbon fibers (CFs) can dominate heat dissipation rates in CF-based composite materials. Here, we develop a totally non-contact “laser-flash Raman mapping” method to simultaneously measure the TCR at the CF-CF junction and their thermal conductivities. Laser power is used to heat the sample and the laser absorptivity is experimentally determined by a transient laser-flash Raman technique. The laser heating positions are changed along two connected CFs, and the change of temperature rise with varying positions is in-situ measured from the temperature dependent Raman band shifts. The high spatial resolution of the micro-Raman mapping allows direct observation of the abrupt jump of thermal resistance at the CF-CF junction, from which we extracted the TCR as well as the thermal conductivity. The laser absorptivity of the 11 μm-diameter CFs is measured to be 0.12 ± 0.03, the thermal conductivities of the individual CFs are around 200 W/mK, and the TCR of the CF-CF junction is (2.98 ± 0.92) × 105 K/W. This work provides indispensable knowledge for the design of CF-based composite for thermal management, and the novel non-contact measurement method can stimulate characterization and manipulation of contact/interface heat conduction between various micro- and nano-materials.

UR - http://www.scopus.com/inward/record.url?scp=85053766428&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053766428&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2018.09.034

DO - 10.1016/j.carbon.2018.09.034

M3 - Article

VL - 141

SP - 92

EP - 98

JO - Carbon

T2 - Carbon

JF - Carbon

SN - 0008-6223

ER -