Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session U52: Surfaces and Thin Films of Novel Electronic Materials
2:30 PM–5:18 PM,
Thursday, March 5, 2020
Room: Mile High Ballroom 1E
Sponsoring
Unit:
DCMP
Chair: Daniel Dougherty, North Carolina State University
Abstract: U52.00008 : Understanding Electrical and Thermal Transport in Single Strand Cu-Coated Carbon Fiber*
Presenter:
Hojoon Yi
(Sungkyunkwan Univ)
Authors:
Hojoon Yi
(Sungkyunkwan Univ)
Ji Yeon Kim
(Korean Institute of Carbon Convergence Technology)
Hamza Zad Gul
(Sungkyunkwan Univ)
Seungsu Kang
(Sungkyunkwan Univ)
Giheon Kim
(Sungkyunkwan Univ)
Eunji Sim
(Sungkyunkwan Univ)
Hyunjin Ji
(Sungkyunkwan Univ)
Jungwon Kim
(Korea Research Institute of Chemical Technology)
Young Chul Choi
(Korean Institute of Carbon Convergence Technology)
Won Seok Kim
(Korean Institute of Carbon Convergence Technology)
Seongchu Lim
(Sungkyunkwan Univ)
In this study, 1ω AC current was used to analyze the electrical and thermal conductivity of single-stranded metal-coated carbon fibers with different metal thicknesses. Generated 3ω voltage due to heat generation was measured and analyzed. We conclude that depositing a metal layer on CF improves the both conductivity of CF. And our results show that the thermal conductivity of CF improves as the metal thickness increases. The heat flow is also identified through the Lorenz number, which represents the ratio of thermal conductivity to electrical conductivity. The change in Lorenz number explains how heat is distributed in the MCF over temperature changes.
Our results help to understand the heat transfer of the core-shell structure and can be used to identify heat dissipation and conduction without compromising the electrical conductivity of metal-coated carbon fibers.
*This work is supported by the civil-military technology cooperation program (15-CM-MA-14).
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