In undergraduate courses on classical electromagnetism, it is taught that a perfect conductor expels the electromagnetic (EM) field, and hence its surface is not able to support the propagation of bound EM waves. However, when the surface of a perfect conductor is structured at a length scale much smaller than the operating wavelength, geometrically induced surface EM modes can be supported. Owing to their similarities with the surface plasmon polaritons (SPPs) in the optical regime, these surface EM modes were named spoof surface plasmons. The concept of spoof surface plasmons has opened up a new line of research within plasmonics with the aim of transferring all the potentialities of SPPs in the optical regime to lower frequencies (microwave, terahertz, and midinfrared regimes) in which a metal behaves as a quasiperfect conductor. In recent years, several research groups have extended this concept from planar surfaces to waveguides, and eventually to resonators, covering the entire range of structures studied in standard plasmonics. This review provides a detailed perspective on the recent developments in spoof surface plasmon photonics from both the fundamental and applied sides.

中文翻译：

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欺骗表面等离子体光子学

在经典电磁学本科课程中，教授认为完美导体会排斥电磁场，因此其表面无法支持束缚电磁波的传播。然而，当完美导体的表面结构长度远小于工作波长时，可以支持几何感应表面电磁模式。由于它们在光学状态下与表面等离子体激元 (SPP) 相似，这些表面电磁模式被称为欺骗表面等离子体。欺骗表面等离子体激元的概念开辟了等离子体激元研究的新领域，其目的是将光学区域中表面等离子体激元的所有潜力转移到较低频率（微波、太赫兹和中红外区域），其中金属表现得准完美导体。近年来，几个研究小组已将这一概念从平面扩展到波导，并最终扩展到谐振器，涵盖了标准等离子体学研究的整个结构范围。这篇综述从基础和应用两个方面对欺骗表面等离子体光子学的最新发展提供了详细的视角。