Enhanced absorption property of ordered mesoporous carbon/Co-doped ordered mesoporous carbon double-layer absorber

doi:10.1088/1674-1056/22/4/044101

Abstract 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 double-layer absorber which is composed of OMC as an absorbing layer and M-doped OMC for matching layer. The calculated results show that the EM wave absorption performance of OMC/OMC-Co (2.2 mm/2.1 mm) 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 air and absorber. Moreover, it can be found that for the absorber with given matching layer, larger value of Δ tanδ_ε (=tan δ_{ε absorbing} -tan δ_{ε matching}) can induce better absorption performance, indicating the impedance difference between absorbing layer and matching layer plays an important role in improving the absorption property of double-layer absorber.

Keywords: ordered mesoporous carbon electromagnetic wave absorption double-layer absorber

Received: 09 July 2012
Revised: 28 November 2012
Accepted manuscript online:

PACS:	41.20.Gz	(Magnetostatics; magnetic shielding, magnetic induction, boundary-value problems)
	75.70.Cn	(Magnetic properties of interfaces (multilayers, superlattices, heterostructures))
	77.22.Gm	(Dielectric loss and relaxation)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50771082 and 60776822), the Doctorate Foundation (Grant No. CX201207) and the Graduate Starting Seed Fund of Northwestern Polytechnical University (Grant No. Z2011011), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2012JM1009), and the Scientific Research Program Funded by Shaanxi Provincial Educational Department, China (Grant No. 12JK0984).

Corresponding Authors: Wang Liu-Ding
E-mail: wangld@nwpu.edu.cn

Cite this article:

Guo Shao-Li (郭绍丽), Wang Liu-Ding (王六定), Wang Yi-Ming (王一明), Wu Hong-Jing (吴宏景), Shen Zhong-Yuan (沈中元) Enhanced absorption property of ordered mesoporous carbon/Co-doped ordered mesoporous carbon double-layer absorber 2013 Chin. Phys. B 22 044101

[1]	Hou C L, Li T H, Zhao T K, Zhang W J and Cheng Y L 2012 Mater. Design. 33 413
[2]	Duan Y P, Yang Y, He M, Liu S H, Cui X D and Chen H F 2008 J. Phys D: Appl. Phys. 41 125403
[3]	Yan J F, You T G, Zhang Z Y, Tian J X, Yun J N and Zhao W 2011 Chin. Phys. B 20 048102
[4]	Liu T, Zhou P H, Liang D F and Deng L J 2012 Chin. Phys. B 21 050302
[5]	Jin H B, Li D, Cao M S, Dou Y K, Chen T, Wen B and Simeon A 2011 Chin. Phys. Lett. 28 037701
[6]	Feng Y B, Qiu T and Shen C Y 2007 J. Magn. Magn. Mater. 318 8
[7]	Zhai Y, Dou Y, Liu X, Tu B and Zhao D Y 2009 J. Mater. Chem. 19 3292
[8]	Cejka J 2003 Appl. Catal. A 254 327
[9]	Jiang X Y, Zhu L D, Yang D X, Mao X Y and Wu Y H 2009 Electroanalysis 21 1617
[10]	Peng X, Cao D P and Wang W C 2008 J. Phys. Chem. C 112 13024
[11]	Zhou J H, He J P, Li G X, Wang T, Sun D, Ding X C, Zhao J Q and Wu S H 2010 J. Phys. Chem. C 114 7611
[12]	Wu H J, Wang L D, Wang Y M, Guo S L and Shen Z Y 2012 J. Alloys Compd. 525 82
[13]	Zhou J H, He J P, Wang T, Li G X, Guo Y X, Zhao J Q and Ma Y 2011 J. Alloys Compd. 509 8211
[14]	Zhao D Y, Feng J L, Huo Q S, Melosh N, Fredrickson G H, Chmelka B F and Stucky G D 1998 Science 279 548
[15]	Jun S, Joo S H, Ryoo R, Kruk M, Jaroniec M, Liu Z, Ohsuna T and Terasaki O 2000 J. Am. Chem. Soc. 122 10712
[16]	Tang X, Tian Q, Zhao B Y and Hu K A 2007 Mater. Sci. Eng. A 445-446 135
[17]	Liu Q L, Zhang D and Fan T X 2008 Appl. Phys. Lett. 93 013110
[18]	Qing Y C, Zhou W C, Luo F and Zhu D M 2011 J. Magn. Magn. Mater. 323 600

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Enhanced absorption property of ordered mesoporous carbon/Co-doped ordered mesoporous carbon double-layer absorber

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