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3D Printed Embedded Metamaterials
Small ( IF 13.0 ) Pub Date : 2021-10-20 , DOI: 10.1002/smll.202103262 Kun Peng Zhang 1 , Yan Fei Liao 1 , Bin Qiu 1 , Yue Kun Zheng 1 , Ling Ke Yu 1 , Gong Han He 1 , Qin Nan Chen 1 , Dao Heng Sun 1, 2
Small ( IF 13.0 ) Pub Date : 2021-10-20 , DOI: 10.1002/smll.202103262 Kun Peng Zhang 1 , Yan Fei Liao 1 , Bin Qiu 1 , Yue Kun Zheng 1 , Ling Ke Yu 1 , Gong Han He 1 , Qin Nan Chen 1 , Dao Heng Sun 1, 2
Affiliation
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The manufacturing of 3D and conformal metamaterials remains a major challenge. The projection micro-stereolithography 3D printing technology combined with the liquid metal filling method is employed here to fabricate the metamaterials, which are characterized with embedded features that can effectively protect the metal resonance layer from external influence, and integrated molding of macro–micro structures and function-structure. To demonstrate the robustness and flexibility of the proposed method, three types of metamaterials are fabricated: 3D orthogonal split-ring resonator metamaterial, bionic compound eye conformal metamaterial, and a five-layer broadband conformal metamaterial in the form of hemispherical moth-eye, which are costly, tedious, and time consuming in conventional fabrication methods. And the layout of the filling channel is optimized and the polydimethylsiloxane coating post-treatment process is applied to smooth the surface roughness caused by the staircase effect of 3D printing to improve the transmission performance of metamaterial devices. The transmission properties are measured using terahertz time-domain spectroscopy system and the experimental results show that the method proposed in this paper makes metamaterial manufacture no longer limited to complex structures, which effectively expands the application range of metamaterials.
中文翻译：
3D 打印嵌入式超材料
3D 和共形超材料的制造仍然是一项重大挑战。此处采用投影微立体光刻3D打印技术结合液态金属填充方法制造超材料，其特点是具有嵌入特征，可有效保护金属共振层免受外部影响，以及宏观-微观结构的集成成型和功能结构。为了证明所提出方法的稳健性和灵活性，制造了三种类型的超材料：3D 正交裂环谐振器超材料、仿生复眼共形超材料和半球形蛾眼形式的五层宽带共形超材料，其中在传统的制造方法中，它们是昂贵、乏味和耗时的。并优化填充通道布局，采用聚二甲基硅氧烷涂层后处理工艺，平滑3D打印阶梯效应造成的表面粗糙度，提高超材料器件的传输性能。利用太赫兹时域光谱系统测量透射特性，实验结果表明，本文提出的方法使超材料制造不再局限于复杂结构，有效扩展了超材料的应用范围。
更新日期：2021-12-16
中文翻译：
3D 打印嵌入式超材料
3D 和共形超材料的制造仍然是一项重大挑战。此处采用投影微立体光刻3D打印技术结合液态金属填充方法制造超材料，其特点是具有嵌入特征，可有效保护金属共振层免受外部影响，以及宏观-微观结构的集成成型和功能结构。为了证明所提出方法的稳健性和灵活性，制造了三种类型的超材料：3D 正交裂环谐振器超材料、仿生复眼共形超材料和半球形蛾眼形式的五层宽带共形超材料，其中在传统的制造方法中，它们是昂贵、乏味和耗时的。并优化填充通道布局，采用聚二甲基硅氧烷涂层后处理工艺，平滑3D打印阶梯效应造成的表面粗糙度，提高超材料器件的传输性能。利用太赫兹时域光谱系统测量透射特性，实验结果表明，本文提出的方法使超材料制造不再局限于复杂结构，有效扩展了超材料的应用范围。
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