Investigation of EMI-shielding properties of buckypaper manufactured with an easily scalable method.

IF 2.9 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Nanotechnology Pub Date : 2024-12-27 DOI:10.1088/1361-6528/ada03b
Zaur Nuriakhmetov, Yuri Chernousov, Dmitry Smovzh, Vladimir Andryushchenko
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Abstract

This paper presents a straightforward and easily scalable method for producing buckypapers. These thin films consist of single-walled carbon nanotubes (SWCNTs) dispersed on a PET substrate using an airbrushing technique, followed by solvent evaporation. Notably, this process requires minimal equipment complexity. The study investigates the electrical properties of buckypapers made from both purified and unpurified SWCNTs, as well as chemical vapor deposition graphene. Specifically, we focus on their electromagnetic interference (EMI) shielding effectiveness in theS-band of microwaves (2-4 GHz). To evaluate this, we installed buckypaper and graphene plates within a waveguide cross section. The results show that these buckypapers exhibit high overall shielding effectiveness. It is found that buckypapers based on purified carbon nanotubes have higher shielding parameters (due higher electrical conductivity measured by TRL method) than those based on unpurified CNTs. In summary, our approach offers a practical route for manufacturing effective EMI shielding materials, with potential applications in various technological domains.

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易扩展法制备巴克纸的电磁屏蔽性能研究。
本文提出了一种简单且易于扩展的生产纸的方法。巴克纸是通过将分散的SWCNTs悬浮液喷刷到PET基板上,然后进行溶剂蒸发而制成的。这个过程不需要复杂的设备,而且技术上很简单。该研究研究了由SWCNTs(纯化和未纯化的金属杂质)和CVD石墨烯制成的纸的性能,用于在微波(2-4 GHz)的s波段屏蔽EMI。这些材料的板被安装在波导的横截面上。结果表明,该材料具有较高的综合屏蔽效能。研究发现,基于纯化碳纳米管的巴克纸比基于未纯化碳纳米管的巴克纸具有更高的屏蔽参数。这是由于没有金属夹杂物的纯化碳纳米管复合材料具有更高的导电性。所提出的生产巴克纸的方法可以大规模高效地生产屏蔽材料。通过化学气相沉积(CVD)合成的石墨烯板具有独特的性能。石墨烯板的反射系数约为-15 dB,透射系数约为-3 dB。这表明薄板对入射微波功率有较低的反射和显著的吸收。
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来源期刊
Nanotechnology
Nanotechnology 工程技术-材料科学:综合
CiteScore
7.10
自引率
5.70%
发文量
820
审稿时长
2.5 months
期刊介绍: The journal aims to publish papers at the forefront of nanoscale science and technology and especially those of an interdisciplinary nature. Here, nanotechnology is taken to include the ability to individually address, control, and modify structures, materials and devices with nanometre precision, and the synthesis of such structures into systems of micro- and macroscopic dimensions such as MEMS based devices. It encompasses the understanding of the fundamental physics, chemistry, biology and technology of nanometre-scale objects and how such objects can be used in the areas of computation, sensors, nanostructured materials and nano-biotechnology.
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