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Mitigation of Human Exposure to Electromagnetic Fields Using Carbon Foam and Carbon Nanotubes

机译:使用碳泡沫和碳纳米管缓解人体暴露于电磁场的情况

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摘要

In recent years there has been increasing concern about the possible consequences on human health from exposure to RF fields produced by wireless telecommunication technologies. In this work the coupling between carbon foam and composite materials made of carbon nanotubes and epoxy-resin allows to build a material able to absorb the electromagnetic field thus reducing its intensity in the environment where the mitigation of electromagnetic field is required. The Frequency range considered is 2 GHz-3 GHz which is the most common frequency band used in wireless network and microwave oven too. Two different kind of heterogeneous materials are designed, one is a layered radar absorbing material made exclusively of epoxy resin and carbon nanotube in different weight percentage, the others are porous carbon foam where the pores are supposed be filled with carbon nanotubes and epoxy-resin. Both type of materials show interesting absorption properties reaching peak of reflection coefficient between -15 dB and -45 dB for a normally incident plane wave.
机译:近年来,人们越来越担心由于暴露于无线电信技术产生的射频场而可能对人类健康造成的影响。在这项工作中,碳泡沫与由碳纳米管和环氧树脂制成的复合材料之间的耦合允许建立一种能够吸收电磁场的材料,从而在需要减轻电磁场的环境中降低其强度。所考虑的频率范围是2 GHz-3 GHz,这也是无线网络和微波炉中使用的最常见频段。设计了两种不同类型的异质材料,一种是仅由环氧树脂和碳纳米管以不同的重量百分比制成的层状雷达吸收材料,另一种是多孔碳泡沫,其中的孔被认为充满了碳纳米管和环氧树脂。两种类型的材料都显示出有趣的吸收特性,对于垂直入射的平面波,其反射系数的峰值达到-15 dB和-45 dB之间。

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