Design, Realization, and Experimental Characterization of an Admittance Cell for Low-Frequency Dielectric Permittivity Measurements on Liquids
Design, Realization, and Experimental Characterization of an Admittance Cell for Low-Frequency Dielectric Permittivity Measurements on Liquids
复制标题
用于液体低频介电常数测量的导纳单元的设计、实现和实验表征
DOI：
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发表时间：
2016
影响因子：
5.6
通讯作者：
G. Cannazza
中科院分区：
文献类型：
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作者：
E. Piuzzi;S. Chicarella;A. Cataldo;E. De Benedetto;G. Cannazza
在本文中，设计，实现，和实验表征的平行板导纳细胞没有保护环，用于低频液体介电常数测量，提出。与保护端单元相比，建议的导纳单元可以很容易地连接到任何LCR表（甚至是双端），采用传统的轴向/径向设备的测试夹具。此外，边缘效应通过从结构的电磁模拟获得的校正因子（α）来补偿，而不是通过对许多参考液体进行耗时的实验或采用近似的理论公式。最后，为了验证所制造的导纳单元用于低频介电谱的适用性并评估其性能，对六种参考非离子液体材料进行了一组测量。结果表明，该精度与使用商业解决方案时可实现的典型测量精度相当，但成本要高得多。
In this paper, the design, the realization, and the experimental characterization of a parallel-plate admittance cell with no guard ring, to be used for low-frequency dielectric permittivity measurements of liquids, are presented. In contrast to guarded-terminal cells, the proposed admittance cell can easily be connected to any LCR meter (even a two-terminal one) employing traditional test fixtures for axial/radial devices. In addition, the fringing effect is compensated for through a correction factor (α) obtained from electromagnetic simulations of the structure, rather than through time-consuming experiments on a number of reference liquids or adopting approximated theoretical formulations. Finally, to verify the suitability of the fabricated admittance cell for low-frequency dielectric spectroscopy and to assess its metrological performance, a set of measurements was carried out on six reference nonionic liquid materials. The results show that the accuracy is comparable with the typical measurement accuracy achievable, at much higher costs, when using commercial solutions.