Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17053
Title: Synthesis, characterization and microwave absorption of carbon-coated Cu nanocapsules
Authors: Sun, Y
Feng, C
Liu, X
Or, SW 
Jin, C
Keywords: Carbon
Microwave absorbers
Nanocomposites
Issue Date: 2014
Publisher: Univ Fed Sao Carlos, Dept Engenharia Materials
Source: Materials research, 2014, v. 17, no. 2, p. 477-482 How to cite?
Journal: Materials research 
Abstract: The microstructure and microwave absorption of carbon-coated Cu nanocapsules have been investigated. Carbon-coated Cu nanocapsules have been synthesized by an arc-discharge method. The paraffin-Cu/C nanocapsules composite shows excellent electromagnetic (EM) absorption properties. An optimal reflection loss (RL) value of -40.0 dB is reached at 10.52 GHz for a layer 1.9 mm thickness. RL exceeding -20 dB can be realized in any interval within the 1-18 GHz range by choosing an appropriate thickness of the absorbent layer between 1.1 and 10.0 mm. Theoretical simulation for the microwave absorption using the transmission line theory agrees reasonably well with the experimental results. The EM-wave absorption properties of nanocapsules materials are illustrated by means of an absorption-tube-map. The carbon-coated Cu nanocapsule is an attractive candidate for EM-wave absorption, which significantly enriches the family of EM-wave nanoabsorbents.
URI: http://hdl.handle.net/10397/17053
ISSN: 1516-1439
EISSN: 1980-5373
DOI: 10.1590/S1516-14392014005000005
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