Terahertz (THz) plays a pivotal part in numerous technology fields in modern times, including the system of the 6^th generation wireless communication, imaging and elemental analysis. In addition to light sources and detectors, THz applications require quasi optics as lenses, waveguides, and reflectors for the design of a THz system. Three-dimensional (3D) printing has many advantages. However, 3D printing materials always have higher THz-wave absorption rates. In this study, we attempted to discover the optimum process parameters of the combustion temperature of rice husk ash (RHA) and mix RHA with acrylonitrile butadiene styrene (ABS). According to the THz spectrum, the mixture powder would be very useful in applications of 3D printing to increase the refractive index and decrease the absorption coefficient with RHA added into ABS. This improvement will benefit 3D printing technique applications in the far-infrared and THz range.

中文翻译：

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稻壳灰丙烯腈丁二烯苯乙烯的太赫兹复折射率特性及其在3D打印技术中的可能应用

太赫兹起着关键性的部分在近代许多技术领域，其中包括6的系统中^第无线通信、成像和元素分析。除了光源和检测器之外，太赫兹应用还需要准光学元件作为透镜、波导和反射器来设计太赫兹系统。三维 (3D) 打印具有许多优点。然而，3D 打印材料总是具有更高的太赫兹波吸收率。在这项研究中，我们试图发现稻壳灰 (RHA) 燃烧温度的最佳工艺参数，并将 RHA 与丙烯腈丁二烯苯乙烯 (ABS) 混合。根据太赫兹光谱，混合粉末在 3D 打印应用中非常有用，可以在 ABS 中添加 RHA 来增加折射率并降低吸收系数。这种改进将有利于远红外和太赫兹范围内的 3D 打印技术应用。