元原子耦合二聚体的近场超指向性

2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI:10.1109/METAMATERIALS.2014.6948672

A. Radkovskaya, L. Li, E. Edwards, D. Edwards, E. Shamonina, L. Solymar

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引用次数: 2

摘要

我们提出了一个只有一个元原子被激发的二聚体端火阵列的远场和近场超指向性的新结果。我们从结构参数(元原子之间的距离，它们的质量因子和相互耦合值)方面推导了实现超指向性的条件，并表明远场和近场超指向性所需的参数集是不同的。我们的研究结果与医学成像应用相关，如核磁共振成像和相关技术。

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Near-field superdirectivity for coupled dimers of meta-atoms

We present new results relating far-field and near-field superdirectivity for a dimer endfire array in which only one of the meta-atoms is excited. We deduce conditions for achieving superdirectivity in terms of structure parameters (distances between meta-atoms, their quality factors and the values of mutual coupling) and show that the required sets of parameters are different for far-field and near-field superdirectivity. Our results are relevant to medical imaging applications such as MRI and associated technologies.

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2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics

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