Abstract A new type of reconfigurable sensing cavity is designed for measurement of complex dielectric permittivity of materials. This circuit is based on an Epsilon Near Zero (ENZ) tunnel integrated on a substrate, and it uses liquid metal switches to reconfigure two tunneling frequencies (2.4 GHz, and 3.5 GHz). As opposed to conventional narrow channel ENZ structures, our tunnel offers high unloaded quality factor by increasing its volume and controlling its external coupling. Using the cavity perturbation technique, the permittivities of 5 different liquids were measured giving very close results to those reported in the literature.

中文翻译：

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用于材料表征的可重构高 Q epsilon 近零隧道

摘要 设计了一种新型的可重构传感腔，用于材料复介电常数的测量。该电路基于集成在基板上的 Epsilon Near Zero (ENZ) 隧道，它使用液态金属开关来重新配置两个隧道频率（2.4 GHz 和 3.5 GHz）。与传统的窄通道 ENZ 结构相反，我们的隧道通过增加其体积和控制其外部耦合来提供高卸载品质因数。使用腔微扰技术，测量了 5 种不同液体的介电常数，结果与文献中报道的结果非常接近。