Microwave attenuation of multiwalled carbon nanotube-fusedsilica composites

Microwave attenuation of multiwalled carbon nanotube-fusedsilica composites

Multiwalled carbon nanotubes (MWCNTs) were used to convert radome materials to microwave absorbing materials. Dense MWCNT-fused silica composites were prepared by hot-pressing technique. The composites exhibit high complex permittivities at X-band frequencies, depending on the content of MWCNTs. The...

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Veröffentlicht in:Applied physics letters 2005-09, Vol.87 (12), p.123103-123103-3
Hauptverfasser: Xiang, Changshu, Pan, Yubai, Liu, Xuejian, Sun, Xingwei, Shi, Xiaomei, Guo, Jingkun
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container_end_page 123103-3
container_issue 12
container_start_page 123103
container_title Applied physics letters
container_volume 87
creator Xiang, Changshu
Pan, Yubai
Liu, Xuejian
Sun, Xingwei
Shi, Xiaomei
Guo, Jingkun
description Multiwalled carbon nanotubes (MWCNTs) were used to convert radome materials to microwave absorbing materials. Dense MWCNT-fused silica composites were prepared by hot-pressing technique. The composites exhibit high complex permittivities at X-band frequencies, depending on the content of MWCNTs. The value of the loss tangent increases three orders over pure fused silica only by incorporating 2.5 vol % MWCNTs into the composites. The average magnitude of microwave transmission reaches − 33 dB at 11 - 12 GHz in the 10 vol % MWCNT-fused silica composites, which indicates the composites have excellent microwave attenuation properties. The attenuation properties mainly originate from the electric loss of MWCNTs by the motion of conducting electrons.
doi_str_mv 10.1063/1.2051806
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Dense MWCNT-fused silica composites were prepared by hot-pressing technique. The composites exhibit high complex permittivities at X-band frequencies, depending on the content of MWCNTs. The value of the loss tangent increases three orders over pure fused silica only by incorporating 2.5 vol % MWCNTs into the composites. The average magnitude of microwave transmission reaches − 33 dB at 11 - 12 GHz in the 10 vol % MWCNT-fused silica composites, which indicates the composites have excellent microwave attenuation properties. The attenuation properties mainly originate from the electric loss of MWCNTs by the motion of conducting electrons.</abstract><pub>American Institute of Physics</pub><doi>10.1063/1.2051806</doi></addata></record>
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title Microwave attenuation of multiwalled carbon nanotube-fusedsilica composites
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