Superconductive and flexible antenna based on a tri-nanocomposite of graphene nanoplatelets, silver, and copper for wearable electronic devices

IF 6.7 3区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Science: Advanced Materials and Devices Pub Date : 2024-08-03 DOI:10.1016/j.jsamd.2024.100773
Ahmed Jamal Abdullah Al-Gburi , Nor Hadzfizah Mohd Radi , Tale Saeidi , Naba Jasim Mohammed , Zahriladha Zakaria , Gouree Shankar Das , Akash Buragohain , Mohd Muzafar Ismail
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Abstract

Printed electronics, fueled by graphene's conductivity and flexibility, are revolutionizing wearable technology, surpassing copper's limitations in cost, signal quality, size, and environmental impact. Graphene-based inks are positioned to lead in this domain, offering cost-effective solutions directly applicable to materials such as textiles and paper. However, graphene encounters a primary drawback due to its lack of an energy band gap, constraining its potential applications in various electronic devices. In this study, we present a novel formulation of a superconductive, flexible leather graphene antenna utilizing a tri-nanocomposite structure of Graphene Nanoplatelet/Silver/Copper (GNP/Ag/Cu), covering a wideband bandwidth from 5.2 GHz to 8.5 GHz. The electrical conductivity of the GNP/Ag/Cu sample was assessed using the four-point probe method. With each additional layer, conductivity increased from 10.473 × 107 S/m to 40.218 × 107 S/m, demonstrating a direct correlation between conductivity and antenna gain. The study evaluates the efficacy of various thicknesses of conductive Graphene (GNP/Ag/Cu) ink on drill fabric. Safety assurance is provided through specific absorption rate (SAR) testing, indicating 0.84 W/kg per 10 g of tissue for an input power of 0.5 W, in compliance with ICNIRP standards for wearable device safety. Additionally, a morphological analysis of the antenna was conducted, showcasing its potential for efficient signal transmission in wearable electronic devices.

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基于石墨烯纳米片、银和铜三纳米复合材料的超导柔性天线,用于可穿戴电子设备
在石墨烯的导电性和灵活性的推动下,印刷电子技术正在彻底改变可穿戴技术,超越铜在成本、信号质量、尺寸和环境影响方面的限制。基于石墨烯的油墨在这一领域处于领先地位,可提供直接适用于纺织品和纸张等材料的具有成本效益的解决方案。然而,石墨烯的主要缺点是缺乏能带间隙,限制了其在各种电子设备中的潜在应用。在这项研究中,我们利用石墨烯纳米板/银/铜(GNP/Ag/Cu)的三纳米复合结构,提出了一种新颖的超导柔性皮革石墨烯天线配方,覆盖了从 5.2 GHz 到 8.5 GHz 的宽带带宽。使用四点探针法评估了 GNP/Ag/Cu 样品的导电性。每增加一层,电导率就从 10.473 × 10 S/m 增加到 40.218 × 10 S/m,这表明电导率与天线增益之间存在直接关联。该研究评估了不同厚度的导电石墨烯(GNP/Ag/Cu)墨水在钻孔织物上的功效。比吸收率(SAR)测试表明,输入功率为 0.5 W 时,每 10 g 组织的比吸收率为 0.84 W/kg,符合国际非电离辐射防护委员会的可穿戴设备安全标准。此外,还对天线进行了形态分析,展示了其在可穿戴电子设备中进行高效信号传输的潜力。
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来源期刊
Journal of Science: Advanced Materials and Devices
Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.90
自引率
2.50%
发文量
88
审稿时长
47 days
期刊介绍: In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
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