The past decade has seen a number of interesting designs proposed and implemented to generate artificial magnetism at optical frequencies using plasmonic metamaterials, but owing to the planar configurations of typically fabricated metamolecules that make up the metamaterials, the magnetic response is mainly driven by the electric field of the incident electromagnetic wave. We recently fabricated vertical split-ring resonators (VSRRs) which behave as magnetic metamolecules sensitive to both incident electric and magnetic fields with stronger induced magnetic dipole moment upon excitation in comparison to planar SRRs. The fabrication technique enabled us to study the plasmon coupling between VSRRs that stand up side by side where the coupling strength can be precisely controlled by varying the gap in between. The resulting wide tuning range of these resonance modes offers the possibility of developing frequency selective functional devices such as sensors and filters based on plasmon coupling with high sensitivity.

中文翻译：

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垂直开环共振器大分子中的等离子耦合。

在过去的十年中，已经提出并实施了许多有趣的设计，以利用等离子超材料在光频率下产生人工磁性，但是由于构成超材料的典型制造超分子的平面构型，磁响应主要由电场驱动入射电磁波。我们最近制造了垂直开口环谐振器（VSRR），与平面SRR相比，它们对磁场和入射电场和磁场都很敏感，并且在激发时具有更强的感应磁偶极矩。这种制造技术使我们能够研究并排站立的VSRR之间的等离激元耦合，通过改变它们之间的间隙可以精确地控制耦合强度。