Composite Frequency Selective Structure With the Integrated Functionality of Transmission, Absorption, and Scattering

Wan, Weipeng; Li, Yongfeng; Wang, He; Yang, Cheng; Zhu, Zhibiao; Chen, Hongya; Wang, Wenjie; Zheng, Lin; Wang, Jiafu; Qu, Shaobo

doi:10.1109/lawp.2021.3097741

Cited by 11 publications

(9 citation statements)

References 37 publications

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“…To explain the mechanism in this work, the WGS in the bottom layer is studied first. Through the literature, [ 13,25–27 ] it can be noticed that the WGS attached by thin metal strips can excite SSPP modes, with excellent EM properties. The dispersion equation of a single metal strip is [ 25 ]

\begin{array}{*{20}{c}}{{k_z} = k\sqrt {1 + \frac{{w_2^2}}{{{n^2}}}{{\tan }^2}(kl{\rm{/}}2)} }\end{array}

where k z is the propagation constant of the EM waves on the surface of the plasmonic structure.…”

Section: Structure Design and Methodsmentioning

confidence: 99%

“…Besides, with regard to nonmagnetic medium, the absorptive characteristic of EM power can be expressed as [ 13 ]

\begin{array}{*{20}{c}}{{P_{\rm{a}}} = \frac{1}{2}(\omega \varepsilon '' + \sigma )|E{|^2}}\end{array}

where P a is the absorbed power. E is the total electric field.…”

Section: Structure Design and Methodsmentioning

confidence: 99%

“…[ 3,4 ] Moreover, it is noteworthy that the arrival of spoof surface plasmon polaritons (SSPPs) prompts an alternative plan for the absorber device. [ 9–16 ] The plasmonic absorbing structure driven by SSPPs has many advantages compared to the planar metamaterial absorber such as achieving customized absorption bandwidth and ultrawideband absorption. [ 17–20 ] Because of the merits of the SSPPs, various configurations based on hole arrays, slits, varactors, or blocks decorated on the metal surface, including the classic waveguide structure, are proposed for different applications.…”

Section: Introductionmentioning

confidence: 99%

“…[ 21–24 ] Moreover, it bears mention that promising features of SSPPs in absorption applications have been exploited in several previous research outputs. [ 13,25–27 ] For instance, in 2018, Yang et al. developed a non‐planar plasmonic structure with a straight wire array as a cover on the absorber to achieve broadband absorption at high frequency and enhance the k‐ vector matching absorption by dispersion engineering of SSPPs.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23][24] Moreover, it bears mention that promising features of SSPPs in absorption applications have been exploited in several previous research outputs. [13,[25][26][27] For instance, in 2018, Yang et al developed a non-planar plasmonic structure with a straight wire array as a cover on the absorber to achieve broadband absorption at high frequency and enhance the k-vector matching absorption by dispersion engineering of SSPPs. [28] In 2021, via the dispersion engineering of SSPPs, Zhu et al designed an active absorptive frequency selective surface supported by a transmission-absorption integrated structure.…”

mentioning

confidence: 99%

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Direction‐Dependent Janus Metasurface Supported by Waveguide Structure with Spoof Surface Plasmon Polariton Modes

Guo

Gao

Zhang

2022

Adv Materials Technologies

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The plasmonic absorbing structure driven by SSPPs has many advantages compared to the planar metamaterial absorber such as achieving customized absorption bandwidth and ultrawideband absorption. [17][18][19][20] Because of the merits of the SSPPs, various configurations based on hole arrays, slits, varactors, or blocks decorated on the metal surface, including the classic waveguide structure, are proposed for different applications. In SSPP modes, the strongly localized oscillation of free electrons can be efficiently trapped at the metalmedium interface. [21][22][23][24] Moreover, it bears mention that promising features of SSPPs in absorption applications have been exploited in several previous research outputs. [13,[25][26][27] For instance, in 2018, Yang et al. developed a non-planar plasmonic structure with a straight wire array as a cover on the absorber to achieve broadband absorption at high frequency and enhance the k-vector matching absorption by dispersion engineering of SSPPs. [28] In 2021, via the dispersion engineering of SSPPs, Zhu et al. designed an active absorptive frequency selective surface supported by a transmission-absorption integrated structure. [25] However, people usually pay attention to transmissionabsorption characteristics of the waveguide structure (WGS) under SSPP modes, and the directionality of EM waves is rarely dug. It can be observed that the overwhelming majority of researches related to metamaterials are confined to the case where EM waves are incident from one side, leaving half of the EM space unexplored. To enhance the capability of EM waves in full space, more original devices should be devised. And it is worth noting that in 2019, directional Janus metasurface (JM) was proposed by Chen et al. to achieve direction control, which increases the degree of freedom of EM waves control. [29] Furthermore, JMs have long been beguiled as a popular concept for breaking out-of-plane and in-plane structural symmetry. [29][30][31][32][33] In another example, Liu et al. raised cascaded chiral metamaterials for different polarization controls in oppositely propagating directions. [33] These works make full use of directional virtues in JM, promoting the flexibility and freedom of EM wave manipulation. On this point, a novel direction-dependent Janus Metasurface (DDJM) with the synergy of SSPP modes is proposed. Different from existing works, inspired by the previous

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