Microwave metasurfaces comprising overlapping layers of circular patches arranged in a hexagonal array are found to support edge modes akin to edge plasmons. The coupling of these edge modes across small gaps between two such arrays is explored. This phenomenon, well known at optical frequencies, is verified here for the first time, to the best of our knowledge, at microwave frequencies.

中文翻译：

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微波超表面支持的耦合边缘模式

发现包括以六边形阵列排列的圆形贴片的重叠层的微波超表面支持类似于边缘等离子体激元的边缘模式。探索了在两个这样的阵列之间的小间隙上这些边缘模式的耦合。据我们所知，在光频率下这种现象在微波频率下已首次得到验证。