射频等离激元学
Plasmonics at radio frequencies
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中文总结 AI 辅助
本文证明射频频段可存在类似等离激元的低损耗表面电磁波，其模式指数大于1，并推导了波阻抗，实验验证了水-空气等界面的二维传播，展示了水下、地下等通信应用。
中文摘要 AI 辅助
我们证明了低损耗的射频类等离激元表面电磁波可以沿着空气与高导电介质（如水或金属）之间的粗糙界面传播。与众所周知的Zenneck波解不同，这些表面波的模式指数大于1，因此其传播特性总体上类似于可见光频段表面等离激元的特性。我们推导了这些模式的波阻抗，这表明需要采用特殊的等离激元感应器或激发器来高效产生这些新型表面电磁模式。我们在水-空气和水-冰-空气界面的情况下，从实验和理论上探索了这些射频等离激元的传播特性，并揭示了其传播的二维特性。我们还展示了射频等离激元的其他重要应用，例如沿浸没在水中的金属基础设施进行通信、沿湖底通信、水下等离激元雷达，以及地下和茂密丛林中的等离激元通信。
英文摘要
We demonstrate that low loss radio frequency plasmon-like surface electromagnetic waves may propagate along rough interfaces between air and highly conductive media, such as water or metal. Unlike the well-known Zenneck wave solutions, these surface waves have mode index larger than 1, so that their propagation properties are generally similar to the properties of surface plasmons in the visible frequency range. The wave impedance of these modes is derived, which demonstrates the need to use special plasmonic inducers or exciters for efficient generation of these novel surface electromagnetic modes. Propagation characteristics of these radio frequency plasmons were explored both experimentally and theoretically in the cases of water-air and water-ice-air interfaces, and the two-dimensional character of this propagation has been revealed. Other important applications of radio frequency plasmons were demonstrated, such as communication along metal infrastructure immersed in water, communication along a lake floor, underwater plasmonic radar, as well as plasmonic communications underground and in the dense jungles.
发表机构
- Saltenna Inc.（萨尔泰纳公司）
- University of Massachusetts Lowell（马萨诸塞大学洛厄尔分校）
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