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Amorphous Carbon Regulates Defects to Achieve TaC Nanowires with Enhanced Microwave Absorption.

Authors :
Wen, Lanchao
Guan, Li
Zhang, Jiaxin
Zhu, Yujie
Hao, Jiawei
Zhao, Biao
Zhang, Rui
Source :
ACS Applied Nano Materials; 1/12/2024, Vol. 7 Issue 1, p1357-1368, 12p
Publication Year :
2024

Abstract

Carbon/carbon composite materials, as electromagnetic wave-absorbing (EWA) materials, have been widely studied due to their excellent impedance matching and high dielectric loss. In this work, we introduced amorphous carbon into the TaC nanowire (TaC<subscript>nws</subscript>) matrix, effectively optimizing impedance matching. The inclusion of amorphous carbon introduces a substantial quantity of imperfections and interfaces, thereby promoting polarization. The multipolarization loss and magnetic loss mechanism generate electromagnetic synergistic loss effects, significantly improving the attenuation performance of EW. The TaC<subscript>nws</subscript>/C sample exhibits exceptional EWA performance, achieving a minimum reflection loss (RL<subscript>min</subscript>) of −54.25 dB and an effective absorption bandwidth (EAB) of 3.6 GHz at a low thickness of merely 1.4 mm. This study presents a novel methodology for the future fabrication of TMC composite materials, thereby holding substantial research implications. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
25740970
Volume :
7
Issue :
1
Database :
Complementary Index
Journal :
ACS Applied Nano Materials
Publication Type :
Academic Journal
Accession number :
174803279
Full Text :
https://doi.org/10.1021/acsanm.3c05486