Skin effect mitigation in laser processed multi-walled carbon nanotube/copper conductors

Authors

K. Keramatnejad, University of Nebraska-LincolnFollow
Y. S. Zhou, University of Nebraska-LincolnFollow
Y. Gao, University of Nebraska-Lincoln
H. Rabiee Golgir, University of Nebraska-LincolnFollow
M. Wang, University of Nebraska-Lincoln
L. Jiang, Beijing Institute of Technology
J.F. Silvain, Institut de Chimie de la Matiere Condensee de Bordeaux (ICMCB-CNRS) 87, Avenue du Docteur Albert Schweitzer F-33608 Pessac Cedex, France
Yongfeng Lu, University of Nebraska-LincolnFollow

ORCID IDs

H. Rabiee Golgir

Date of this Version

2015

Citation

JOURNAL OF APPLIED PHYSICS 118, 154311 (2015)

Comments

Copyright 2015 AIP Publishing LLC

Abstract

In this study, laser-processed multi-walled carbon nanotube (MWCNT)/Cu conductors are introduced as potential passive components to mitigate the skin effect of Cu at high frequencies (0–10 MHz). Suppressed skin effect is observed in the MWCNT/Cu conductors compared to primitive Cu. At an AC frequency of 10 MHz, a maximum AC resistance reduction of 94% was observed in a MWCNT/Cu conductor after being irradiated at a laser power density of 189 W/cm2. The reduced skin effect in the MWCNT/Cu conductors is ascribed to the presence of MWCNT channels which are insensitive to AC frequencies. The laser irradiation process is observed to play a crucial role in reducing contact resistance at the MWCNT-Cu interfaces, removing impurities in MWCNTs, and densifying MWCNT films.