Spectroscopy of Nafion in terahertz frequency range
Spectroscopy of Nafion in terahertz frequency range
复制标题
Nafion 太赫兹频率范围的光谱
DOI：
10.1063/1.4896194
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发表时间：
2014
影响因子：
3.2
通讯作者：
K. Zaytsev
中科院分区：
文献类型：
--
作者：
S. Yurchenko;K. Zaytsev
我们报告的结果太赫兹（THz）光谱的聚合物全氟磺酸。使用太赫兹脉冲光谱和精细的后处理算法的基础上不适定的光谱逆问题分析，我们发现的Nafion的复介电常数的范围为0.15-1.5太赫兹。在低频（千兆赫）范围内的结果与已知的测量结果吻合得很好。我们发现，复介电常数可以用双德拜模型很好地描述，弛豫时间分别为7.20 ± 0.05ps和0.12 ± 0.05ps。从“Nafion-水”系统中出现的分凝结构的观点对这一结果进行了简要的讨论。
We report results on the terahertz (THz) spectroscopy of polymer Nafion. Using THz pulse spectroscopy and refined post-processing algorithms based on the ill-posed spectroscopic inverse problem analysis, we find the complex dielectric permittivity of Nafion to be in the range 0.15–1.5 THz. The results in the low-frequency (gigahertz) range agree well with known measurements. We find that the complex dielectric permittivity can be described well using the double-Debye model with relaxation times of 7.20 ± 0.05 ps and 0.12 ± 0.05 ps. This result is discussed briefly from the viewpoint of the appearance of a segregated structure in the “Nafion–water” system.