In this paper, benefitting from the presence of an ultrathin corrugated metal–insulator–metal ring resonator, for the first time, we proposed a dual-detection microfluidic chemical sensor based on quarter-mode spoof localized surface plasmon (LSP) resonator with higher sensitivity among all the dual/multichannel microwave chemical sensors. First, we study full-mode spoof plasmonic resonator and we show that the resonance modes of the quarter-mode structure are exactly one-fourth of the full-mode structure. By placing two asymmetric microfluidic channels in the strongest E -field regions, the capability of detecting two aqueous solutions is feasible. By utilizing a 85070 E performance probe connected to vector network analyzer, we determined the relative permittivity and loss tangent of fluids under test. Then, the fabricated prototype was tested, and our experimental results collaborate well our simulation predictions. Our proposed RF sensor exhibits 87% growth in se...

中文翻译：

---

用于双检测RF微流化学传感器的高灵敏度四分之一模式欺骗局部等离子体谐振器

在本文中，首次受益于超薄波纹金属-绝缘体-金属环形谐振器的存在，我们首次提出了一种基于四分之一模式欺骗局部表面等离子体激元（LSP）谐振器的双检测微流体化学传感器。在所有双/多通道微波化学传感器中。首先，我们研究了全模式欺骗型等离子体激元谐振器，并证明四分之一模式结构的谐振模式恰好是全模式结构的四分之一。通过在最强的电场区域中放置两个不对称的微流体通道，检测两种水溶液的能力是可行的。通过使用连接到矢量网络分析仪的85070 E性能探头，我们确定了被测流体的相对介电常数和损耗角正切。然后，测试了制造的原型，我们的实验结果与我们的模拟预测很好地配合。我们建议的RF传感器在安全性方面表现出87％的增长。