A magnetic control reconfigurable coded electromagnetic absorbing metamaterial

Gan, Ruyi; Yu, Minggao; Li, Shixu; Li, Yaping; Fang, Bohan; Qi, Song

doi:10.1016/j.compscitech.2021.109098

Cited by 16 publications

(1 citation statement)

References 54 publications

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“…By changing the properties (i.e., μ r , ε r , and t) of dielectric space, the absorption performance of MAs can be tuned. [24,32,[90][91][92][93] Some materials, such as ferrite materials (FMs) and liquid crystals (LCs), are capable of varying μ r and ε r under the magnetic force and electric field, providing the ability to manipulate the EM properties of MAs. [60,92,94,95] Alternatively, dynamically controlling dielectric thickness is a novel tuning technique to realize tunable/reconfigurable MAs, as illustrated in Figure 2h.…”

Section: Tuning Theory and Approaches In Masmentioning

confidence: 99%

Metamaterial Absorbers: From Tunable Surface to Structural Transformation

et al. 2022

Advanced Materials

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Since the first demonstration, remarkable progress has been made in the theoretical analysis, structural design, numerical simulation, and potential applications of metamaterial absorbers (MAs). With the continuous advancement of novel materials and creative designs, the absorption of MAs is significantly improved over a wide frequency spectrum from microwaves to the optical regime. Further, the integration of active elements into the MA design allows the dynamical manipulation of electromagnetic waves, opening a new platform to push breakthroughs in metadevices. In the last several years, numerous efforts have been devoted to exploring innovative approaches for incorporating tunability to MAs, which is highly desirable because of the progressively increasing demand on designing versatile metadevices. Here, a comprehensive and systematical overview of active MAs with adaptive and on‐demand manner is presented, highlighting innovative materials and unique strategies to precisely control the electromagnetic response. In addition to the mainstream method by manipulating periodic patterns, two additional approaches, including tailoring dielectric spacer and transforming overall structure are called back. Following this, key parameters, such as operating frequency, relative tuning range, and switching speed are summarized and compared to guide for optimum design. Finally, potential opportunities in the development of active MAs are discussed.

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