Enhanced absorption properties of ordered mesoporous carbon/Co-doped ordered mesoporous carbon double-layer absorbers

Ordered mesoporous carbon （OMC） and metal-doped （M-doped） OMC composites are prepared, and their electromagnetic （EM） parameters are measured. Using the measured EM parameters we calculate the EM wave absorption properties of a double-layer absorber, which is composed of OMC as an absorbing layer an...

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Published in:Chinese physics B 2013-04, Vol.22 (4), p.237-242
Main Author: 郭绍丽 王六定 王一明 吴宏景 沈中元
Format: Article
Language:English
Subjects:
Absorption
Bandwidth
Carbon
Impedance
Matching
Mathematical analysis
Noise levels
OMC
Reflection
吸收剂
吸收性能
吸收特性
有序介孔
碳
金属掺杂
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creator 郭绍丽 王六定 王一明 吴宏景 沈中元
description Ordered mesoporous carbon （OMC） and metal-doped （M-doped） OMC composites are prepared, and their electromagnetic （EM） parameters are measured. Using the measured EM parameters we calculate the EM wave absorption properties of a double-layer absorber, which is composed of OMC as an absorbing layer and M-doped OMC as the matching layer. The calculated results show that the EM wave absorption performance of OMC/OMC–Co （2.2mm/2.1mm） is improved remarkably. The obtained effective absorption bandwidth is up to 10.3 GHz and the minimum reflection loss reaches 47.6 dB at 14.3 GHz. The enhanced absorption property of OMC/OMC–Co can be attributed to the impedance match between the air and the absorber. Moreover, it can be found that for the absorber with a given matching layer, a larger value of -tanδ ε （= tan δ ε absorbing tan δε matching ） can induce better absorption performance, indicating that the difference in impedance between the absorbing layer and the matching layer plays an important role in improving the absorption property of double-layer absorbers.
doi_str_mv 10.1088/1674-1056/22/4/044101
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Moreover, it can be found that for the absorber with a given matching layer, a larger value of -tanδ ε （= tan δ ε absorbing tan δε matching ） can induce better absorption performance, indicating that the difference in impedance between the absorbing layer and the matching layer plays an important role in improving the absorption property of double-layer absorbers.</description><identifier>ISSN: 1674-1056</identifier><identifier>EISSN: 2058-3834</identifier><identifier>EISSN: 1741-4199</identifier><identifier>DOI: 10.1088/1674-1056/22/4/044101</identifier><language>eng</language><subject>Absorption ; Bandwidth ; Carbon ; Impedance ; Matching ; Mathematical analysis ; Noise levels ; OMC ; Reflection ; 吸收剂 ; 吸收性能 ; 吸收特性 ; 有序介孔 ; 碳 ; 金属掺杂</subject><ispartof>Chinese physics B, 2013-04, Vol.22 (4), p.237-242</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c312t-c3651228046434ee50935b5f6a754f3cff70afa851aee1cda7b1a5bb10bb29f63</citedby><cites>FETCH-LOGICAL-c312t-c3651228046434ee50935b5f6a754f3cff70afa851aee1cda7b1a5bb10bb29f63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/85823A/85823A.jpg</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>郭绍丽 王六定 王一明 吴宏景 沈中元</creatorcontrib><title>Enhanced absorption properties of ordered mesoporous carbon/Co-doped ordered mesoporous carbon double-layer absorbers</title><title>Chinese physics B</title><addtitle>Chinese Physics</addtitle><description>Ordered mesoporous carbon （OMC） and metal-doped （M-doped） OMC composites are prepared, and their electromagnetic （EM） parameters are measured. 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source Institute of Physics
subjects Absorption
Bandwidth
Carbon
Impedance
Matching
Mathematical analysis
Noise levels
OMC
Reflection
吸收剂
吸收性能
吸收特性
有序介孔
碳
金属掺杂
title Enhanced absorption properties of ordered mesoporous carbon/Co-doped ordered mesoporous carbon double-layer absorbers
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