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首页> 外文期刊>Magnetics, IEEE Transactions on >Electric-Field-Triggered Electromagnetic Polarizations in the Close-Packed Fe at C Nanocapsules
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Electric-Field-Triggered Electromagnetic Polarizations in the Close-Packed Fe at C Nanocapsules

机译:C纳米胶囊中密堆积铁中的电场触发电磁极化

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摘要

We investigated microwave absorption properties of the close-packed Fe at C nanocapsules under an external electric-field stimulus. The results indicate that the reflection parameter (n$S_{11}$n) linearly increases as the applied voltage ranging from 0 to 12 V at 18 to 26.5 GHz (n$K$n-band) frequencies, while the transmission parameter (n$S_{21}$n) remains constant. Such tunability is a consequence of the energy transfer between the permeability and the permittivity, physically originating from the multiple dielectric polarizations at the core at shell interfaces, ascribed to the electric-field induced asymmetric distribution of localized charge. The present finding might open up a new avenue for designing smart microwave absorbers targeted to complex serving environments.
机译:我们研究了在外部电场刺激下,密堆积的Fe在C纳米胶囊中的微波吸收特性。结果表明,反射参数(n $ S_ {11} $ n)随着施加电压在18至26.5范围从0至12 V线性增加GHz(n $ K $ n-band)频率,而传输参数(n $ S_ {21} $ n)保持不变。这种可调谐性是磁导率和介电常数之间能量转移的结果,物理上源于壳界面处核处的多重介电极化,归因于电场引起的局部电荷的不对称分布。目前的发现可能为设计针对复杂服务环境的智能微波吸收器开辟一条新途径。

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  • 来源
    《Magnetics, IEEE Transactions on》 |2018年第9期|1-5|共5页
  • 作者单位

    Key Laboratory for Anisotropy and Texture of Materials, School of Materials Science and Engineering, Northeastern University, Shenyang, China;

    Key Laboratory for Anisotropy and Texture of Materials, School of Materials Science and Engineering, Northeastern University, Shenyang, China;

    Innovative Center for Advanced Materials, Hangzhou Dianzi University, Hangzhou, China;

    Key Laboratory for Anisotropy and Texture of Materials, School of Materials Science and Engineering, Northeastern University, Shenyang, China;

    Key Laboratory for Anisotropy and Texture of Materials, School of Materials Science and Engineering, Northeastern University, Shenyang, China;

    Key Laboratory for Anisotropy and Texture of Materials, School of Materials Science and Engineering, Northeastern University, Shenyang, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Iron; Absorption; Permeability; Permittivity; Dielectric losses; Microwave communication;

    机译:铁;吸收;磁导率;介电损耗;微波通讯;

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