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首页> 外文期刊>Advanced Optical Materials >A Modularized and Switchable Component for Flexible Passive Device: Terahertz Photonic Crystals with Fine-Tuning
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A Modularized and Switchable Component for Flexible Passive Device: Terahertz Photonic Crystals with Fine-Tuning

机译:柔性无源器件的模块化和可切换组件:具有微调功能的太赫兹光子晶体

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摘要

In this work, tunable terahertz photonic crystals (PCs) used as modularizedrnand switchable components in flexible passive device are designed and prepared.rnFlexible woodpile structures created by the direct-writing technologyrnwith a composite ink system composed of barium strontium titanate nanoparticlesrnand polydimethylsiloxane are immersed in 5CB liquid crystals (LCs),rnwhere the orientation of LC molecule is modulated by the external magneticrnfield. Each of these can work in terahertz wavelength with specific positionrnand depth of the dips in the transmittance spectra due to different geometriesrnas well as having the ability of fine-tuning. Experiments show that thernphotonic gaps of these PCs can cover from 0.2 to 0.3 THz, as well as aboutrn7.5% fine tunability of photonic gap appearing with the orientation changernof the magnetic field. More interestingly, the dips of photonic gaps keep thernsame position but become deeper with the increase of layer, an ability tornrealize another dimensional switchover. This work demonstrates that efficientrnterahertz PCs with different geometry parameters could be dynamically tunedrnby the orientation of magnetic field and it can open a universal approach tornshrinking the size of device and rapid manufacturing in a large throughput.
机译:在这项工作中,设计并制备了用作柔性无源器件中模块化和可切换组件的可调谐太赫兹光子晶体(PC)。rn将由钛酸钡锶纳米颗粒和聚二甲基硅氧烷组成的复合墨水系统直接书写技术创建的柔性木桩结构浸入5CB中液晶(LC),其中LC分子的方向受外部磁场的影响。由于具有不同的几何形状,并且具有微调的能力,它们中的每一个都可以在太赫兹波长下工作,并且在透射光谱中具有特定的位置和凹陷深度。实验表明,这些PC的光子间隙可以覆盖0.2至0.3 THz,并且随着磁场方向的变化,出现的光子间隙的可调性约为7.5%。更有趣的是,光子间隙的倾角保持相同的位置,但随着层数的增加而变得更深,这是实现另一次尺寸转换的能力。这项工作表明,具有不同几何参数的高效太赫兹PC可以通过磁场的方向进行动态调谐,并且可以为缩小设备尺寸和大批量快速制造提供一种通用的方法。

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  • 来源
    《Advanced Optical Materials》 |2018年第19期|1800384.1-1800384.7|共7页
  • 作者单位

    Advanced Materials InstituteShenzhen Graduate SchoolTsinghua UniversityShenzhen 518055, P. R. China State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084, P. R. China;

    Environment Functional Materials DivisionShenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016, P. R. China University of Chinese Academy of SciencesBeijing 100049, P. R. China;

    State Key Laboratory of TribologyDepartment of Mechanical EngineeringTsinghua UniversityBeijing 100084, P. R. China;

    Advanced Materials InstituteShenzhen Graduate SchoolTsinghua UniversityShenzhen 518055, P. R. China;

    State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084, P. R. China;

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

    direct ink writing; photonic crystals; terahertz; tunable;

    机译:直接墨迹书写;光子晶体;太赫兹可调的;

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