Doping effect of multiwall carbon nanotubes on the microwave electromagnetic properties of NiCoZn spinel ferrites

2007 ◽  
Vol 90 (1) ◽  
pp. 011108 ◽  
Author(s):  
Mangui Han ◽  
Longjiang Deng
Keyword(s):  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
Spinel Ferrites ◽  
Doping Effect ◽  
Electromagnetic Properties ◽  
Multiwall Carbon

Preparation and electromagnetic properties of the BaFe12 O19 /multiwall carbon nanotubes/poly(3-methyl-thiophene) composites

2013 ◽  
Vol 34 (11) ◽  
pp. 1801-1808 ◽  
Author(s):  
Jie Zhao ◽  
Yu Xie ◽  
Zhanggao Le ◽  
Yan Luo ◽  
Yunhua Gao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
Electromagnetic Properties ◽  
Multiwall Carbon

Research of Electromagnetic Properties of Composite Materials on the Basis of MWNTs in Microwave Range

2014 ◽  
Vol 1040 ◽  
pp. 142-147
Author(s):  
Valentine I. Suslyaev ◽  
Vladimir L. Kuznetsov ◽  
S.I. Moseenkov ◽  
Evgeniy Yu. Korovin ◽  
D.V. Krasnikov
Keyword(s):  
Carbon Nanotubes ◽  
Composite Materials ◽  
Structural Parameters ◽  
Multiwall Carbon Nanotubes ◽  
Dielectric Permeability ◽  
Electromagnetic Properties ◽  
Microwave Range ◽  
Multilayer Carbon Nanotubes ◽  
Multiwall Carbon ◽  
Parameters Calculation

In this paper electromagnetic properties of composite materials based on polymethylmethacrylate and multiwall carbon nanotubes (MWCNTs) are investigated. Carbon nanotubes are received with application of various types of catalysts and have various structural parameters. Calculation of dielectric permeability of the synthesised materials is carried out. Dependence of electromagnetic properties of composite materials on concentration and structure used multilayer carbon nanotubes is shown.

Microwave Absorbing Nanocomposites Composed with and without Polyaniline by Use as Radar Absorbing Structure

2012 ◽  
Vol 730-732 ◽  
pp. 920-924 ◽  
Author(s):  
Luiza de Castro Folgueras ◽  
Mirabel Cerqueira Rezende
Keyword(s):  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Properties ◽  
Woven Fabric ◽  
Electromagnetic Properties ◽  
Naval Research ◽  
Radar Absorbing Structure ◽  
Physical And Chemical ◽  
Multiwall Carbon ◽  
And Chemical Properties

In the past decade, new materials have been developed based on the physical and chemical properties of carbon nanotubes. The combination of polyaniline with multiwall carbon nanotubes results in a new functional material with advantageous electromagnetic properties. The objective of this study was to produce a radar absorbing structure consisting of glass fiber woven fabric impregnated with a formulation containing carbon nanotubes, polyurethane resin, with or without polyaniline. A different formulation was used for each woven sheet (multilayer structure). The electromagnetic properties of these nanocomposite materials were characterized by reflectivity measurements using Naval Research Laboratory arch method (frequency range, 8 to 12 GHz). The attenuation of both sides of each nanocomposite material was also measured and compared. The attenuation of electromagnetic energy was as high as 70 %, approximately, indicating that these materials can be used as microwave absorbers.

Anisotropy of the electromagnetic properties of polymer composites based on multiwall carbon nanotubes in the gigahertz frequency range

JETP Letters ◽  
2011 ◽  
Vol 93 (10) ◽  
pp. 607-611 ◽  
Author(s):  
D. S. Bychanok ◽  
M. A. Kanygin ◽  
A. V. Okotrub ◽  
M. V. Shuba ◽  
A. G. Paddubskaya ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Composites ◽  
Multiwall Carbon Nanotubes ◽  
Electromagnetic Properties ◽  
Frequency Range ◽  
Multiwall Carbon

Boehmite Nanofibers as a Dispersant for Nanotubes in an Aqueous Sol

2018 ◽  
Author(s):  
Gen Hayase
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Aqueous Solutions ◽  
High Aspect Ratio ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon ◽  
Nanotube Films

By exploiting the dispersibility and rigidity of boehmite nanofibers (BNFs) with a high aspect ratio of 4 nm in diameter and several micrometers in length, multiwall-carbon nanotubes (MWCNTs) were successfully dispersed in aqueous solutions. In these sols, the MWCNTs were dispersed at a ratio of about 5–8% relative to BNFs. Self-standing BNF–nanotube films were also obtained by filtering these dispersions and showing their functionality. These films can be expected to be applied to sensing materials.

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