Additive manufacturing is a promising tool for the rapid prototyping of terahertz metamaterials at low-cost. In this letter, a terahertz metamaterial is fabricated using a microplotter system on a flexible polyimide film. The limits of the rapid prototyping technique is investigated both experimentally and numerically in order to determine the spectral range accessible by the fabricated metamaterials. Here, the metamaterial is composed of four arrays of metal-insulator-metal (MIM) antennas exhibiting a Fabry Perot resonance at frequencies from 0.25 to 0.8 THz. From a structural analysis of the printed antennas, we determined that the printing resolution is limited to about 5 μm. The arrays are analyzed by terahertz time-domain spectroscopy (THz-TDS). The good agreement between THz-TDS measurements and numerical simulations showed that the microplotter system can be used for rapid prototyping by adjusting a limited number of fabrication parameters.

中文翻译：

---

使用微型绘图仪快速绘制柔性太赫兹超表面的原型

增材制造是一种低成本的太赫兹超材料快速原型制作的有前途的工具。在这封信中，太赫兹超材料是使用微型绘图仪系统在柔性聚酰亚胺薄膜上制成的。快速原型技术的局限性在实验和数值上进行了研究，以便确定所制造的超材料所能达到的光谱范围。在这里，超材料由四个金属-绝缘体-金属（MIM）天线阵列组成，这些天线在0.25至0.8 THz的频率下展现出法布里珀罗共振。通过对印刷天线的结构分析，我们确定印刷分辨率限制为约5μm。阵列通过太赫兹时域光谱仪（THz-TDS）进行分析。