We fabricated flexible hollow fibres with an inner copper coating. A liquid-phase chemical deposition process was used to coat copper thin films inside an acrylonitrile butadiene styrene (ABS) plastic tube. The attenuation characteristics of terahertz(THz)radiation in ABS plastic tubes with bore diameters of 2, 3, and 5 mm were determined at 0.32, 0.65, and 0.98 THz. The lowest loss of 0.85 dB/m at 0.98 THz was obtained for hybrid TE mode propagation in a waveguide consisting of a 0.7-µm- thick copper film layer deposited inside a 97.5-cm-long ABS plastic tube with a 5-mm bore.

中文翻译：

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用于太赫兹传输的带有内部铜涂层的柔性 ABS 空心波导

我们制造了带有内部铜涂层的柔性中空纤维。使用液相化学沉积工艺在丙烯腈丁二烯苯乙烯 (ABS) 塑料管内涂覆铜薄膜。在 0.32、0.65 和 0.98 THz 处测定了孔径为 2、3 和 5 mm 的 ABS 塑料管中太赫兹 (THz) 辐射的衰减特性。在 0.98 THz 时，混合 TE 模式传播的最低损耗为 0.85 dB/m，该波导由沉积在 97.5 厘米长的 5 毫米孔径 ABS 塑料管内的 0.7 微米厚铜膜层组成。