Printing and electromagnetic characteristics of 3D printing frequency selective surface using graphene
Printing and electromagnetic characteristics of 3D printing frequency selective surface using graphene
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DOI：
10.1016/j.jmst.2021.09.041
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发表时间：
2021-11
影响因子：
10.9
通讯作者：
Guoxiang Zhou;Zhe Zhao;Yan-zhao Zhang;Wen-jin Liu;Z. Yang;D. Jia;Yu Zhou
中科院分区：
文献类型：
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作者：
Guoxiang Zhou;Zhe Zhao;Yan-zhao Zhang;Wen-jin Liu;Z. Yang;D. Jia;Yu Zhou
由于3D打印技术的方便性和有效性，通过直接墨水写入（DIW）的频率选择表面（FSS）的研究受到了广泛关注。然而，由于电磁性能对DIW的印刷精度非常敏感，特别是在微尺度上，DIW的印刷精度受到限制，严重限制了其应用。在此，FSS的超高打印精度是通过DIW通过均匀分散的石墨烯片来深度修改流变行为和空间位阻效应来实现的。因此，实现了打印细丝宽度细至67 μm的高精度，间距仅为42 μm，这是常规DIW难以实现的，并且无论是在平面上还是在急剧倾斜的钩面上进行2D打印，甚至3D打印到建筑结构上，3D打印后都没有发现结构变形。在精度大幅提高的基础上，实现了设计模型与印刷物理FSS器件的电磁性能匹配，中心频率误差小于0.3GHz，传输系数误差小于0.046。我们的工作保证了一个有效的和容易的高品质的FSS从石墨烯的援助制备。
The study of Frequency Selective Surface (FSS) by Direct ink writing (DIW) has attracted much attention due to the convenience and effectiveness of 3D printing technology. However, the limited printing precision of DIW has heavily restricted its applications as the electromagnetic performance is highly sensitive to it, especially the precision at the microscale. Herein, the ultra-high printing precision of FSS was achieved through DIW by the uniformly dispersed graphene sheets to deeply modify the rheological behavior and the steric hindrance effect. Thus, the highly precision of the printed filament width as thin as 67 μm with a space of only 42 μm were achieved, which is difficult for conventional DIW, and no structural distortion is found after 3D printing, no matter it was 2D printed on a flat surface or the sharply skewed hook face, or even 3D printed to architectural structures. According to the highly improved precision, the electromagnetic performance matching between the designed model and the printed physical FSS device was perfectly achieved, reducing the center frequency error less than 0.3 GHz, and the transmission coefficient error less than 0.046. Our work promises an effective and easy preparation of high-quality FSS from the aid of graphene.