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CARBON HOLLOW CYLINDER MADE UP FROM RADIALLY ALIGNED CARBON NANOTUBE ARRAYS AS EFFICIENT ELECTROMAGNETIC INTERFERENCE SHIELDING MATERIAL
CARBON HOLLOW CYLINDER MADE UP FROM RADIALLY ALIGNED CARBON NANOTUBE ARRAYS AS EFFICIENT ELECTROMAGNETIC INTERFERENCE SHIELDING MATERIAL
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机译：由径向对准的碳纳米管阵列制成的碳空心圆柱体，作为有效的电磁干扰屏蔽材料
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摘要
With the progression of electronic technologies, a special interest has been drawn upon the development of new materials and microwave technology for the application in the area of shielding and stealth technology. In the present investigation, we prepared a one pot synthesis of hollow cylinders made up of Fe bearing radially aligned carbon nanotubes. The cylinders were synthesized into 1 cm of diameter with different concentration of Fe. For this, quartz tube of inner diameter of 1 cm and various proportions of precursor material {Ferrocence / benzene (x mg/ml)} has been taken. These cylinders were grown on the inner wall of the quartz growth tube. This new novel carbon design was grown by a customized spray pyrolysis method and possesses both conductive/dielectric as well as magnetic content which is requisite for EMI shielding materials. Furthermore, the EMI shielding of different content of Fe bearing radially aligned CNTs based cylinders were investigated for obtaining the desired shielding effectiveness value for possible potential applications. Very high shielding value (SEy 102 dB) were achieved with the CHC synthesized with optimum precursor concentration which is conquered by absorption (SEA 90 dB) rather than reflection (SER -12 dB). Hence, these hollow cylinders made up with Fe bearing radially aligned CNTs show very high EMI shielding performances and can be used as promising next generation shielding materials.
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