We present a method to enhance the sensing properties of a 3D metamaterial sensor. The concept is based on the combination of magnetic plasmon (MP) resonance in 3D metamaterials and a dielectric waveguide, in which a narrow-band hybrid MP resonance can be formed by the strong coupling of the MP resonance in the vertical split ring resonators (VSRRs) with a propagating optical waveguide mode in the dielectric waveguide. Because the hybrid MP resonance of the VSRRs are extremely sensitive to the changes in the refractive index of the material surrounding the VSRRs, the designed 3D metamaterial sensor has very high sensitivity (S = 300 nm/RIU, S* = 16/RIU) and figure of merit (FOM = 30, FOM* = 390), which could find potential applications in label-free biosensing.

中文翻译：

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三维超材料强耦合磁等离子共振的高传感特性


我们提出了一种增强 3D 超材料传感器传感特性的方法。该概念基于 3D 超材料中的磁等离子体 (MP) 谐振与介质波导的结合，其中通过垂直裂环谐振器 (VSRR) 中 MP 谐振的强耦合可以形成窄带混合 MP 谐振。 ）在介质波导中具有传播光波导模式。由于VSRR的混合MP谐振对VSRR周围材料的折射率变化极其敏感，因此设计的3D超材料传感器具有非常高的灵敏度（S = 300 nm/RIU，S* = 16/RIU）品质因数（FOM = 30，FOM* = 390），可以在无标记生物传感中找到潜在的应用。