减少太赫兹范围内损耗的改性弹性体聚合物

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) Pub Date : 2015-11-12 DOI:10.1109/IRMMW-THZ.2015.7327610

D. Headland, P. Thurgood, D. Stavrevski, W. Withayachumnankul, D. Abbott, M. Bhaskaran, S. Sriram

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引用次数: 1

摘要

提出了一种用掺杂剂降低聚二甲基硅氧烷(PDMS)在太赫兹范围内介电损耗的方法。在PDMS样品中掺杂不同浓度的聚四氟乙烯(PTFE)微粒，并用太赫兹时域光谱(THz-TDS)对其进行表征，以提取其材料性质。研究发现，可控掺杂可以显著降低PDMS在太赫兹频率下的介电损耗，对于掺杂浓度最高的样品，在0.3 ~ 1太赫兹范围内，损耗正切平均降低15.3%。将实测材料性能与Lichtenecker对数混合公式进行了比较，得到了近似一致的结果。

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Modified elastomeric polymers for loss reduction in the terahertz range

A method of reducing the dielectric loss of poly-dimethylsiloxane (PDMS) in the terahertz range with dopants is presented. Samples of PDMS are doped with varied concentrations of polytetrafluoroethylene (PTFE) micro-particles, and characterized with terahertz time domain spectroscopy (THz-TDS) in order to extract their material properties. It is found that controlled doping can significantly reduce dielectric loss in PDMS at terahertz frequencies, and for the sample with highest dopant concentration, a 15.3% average reduction in loss tangent is demonstrated over a range from 0.3 to 1 THz. Measured material properties are compared with the Lichtenecker logarithmic mixture formula, and approximate agreement is attained.

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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

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