Two-dimensional nanomaterials for high-efficiency electromagnetic wave absorption: An overview of recent advances and prospects

Zhang, Shijie; Cheng, Bo; Gao, Zhenguo; Lan, Di; Zhao, Zhiwei; Wei, Fengchun; Zhu, Qingsong; Lu, Xiaohan; Wu, Guanglei

doi:10.1016/j.jallcom.2021.162343

Cited by 135 publications

(37 citation statements)

References 271 publications

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“…Further, with careful design of periodic patterns, the impedance of MAs will be matched to free space at resonant frequencies, resulting in a minimized reflection. [46][47][48] Then, the dielectric dissolves the incident wave through either Ohmic losses in periodic patterns or dielectric losses in spacer. [4] To understand the mechanism of absorption, equivalent circuit theory has been widely used.…”

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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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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“…Dopants on nonmetallic and transition metal elements are comparatively applied in electrochemistry while some semiconductor elements-doping can ameliorate mechanical properties of MXene, rare earth elements focus on study on electromagnetic properties because of specific properties of doping elements. [117,118] Although doping-MXene can avoid restacking of MXene flakes effectively, the issue of Ti oxidation on the surface of MXene should not be ignored, which engenders an adverse impact on performance. In the case of N-doping, the diverse configuration of nitrogen produced have unique performance advantages.…”

Section: Rare Earth Elementsmentioning

confidence: 99%

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

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Heteroatom doping can endow MXenes with various new or improved electromagnetic, physicochemical, optical, and structural properties. This greatly extends the arsenal of MXenes materials and their potential for a spectrum of applications. This article comprehensively and critically discusses the syntheses, properties, and emerging applications of the growing family of heteroatom‐doped MXenes materials. First, the doping strategies, synthesis methods, and theoretical simulations of high‐performance MXenes materials are summarized. In order to achieve high‐performance MXenes materials, the mechanism of atomic element doping from three aspects of lattice optimization, functional substitution, and interface modification is analyzed and summarized, aiming to provide clues for developing new and controllable synthetic routes. The mechanisms underlying their advantageous uses for energy storage, catalysis, sensors, environmental purification and biomedicine are highlighted. Finally, future opportunities and challenges for the study and application of multifunctional high‐performance MXenes are presented. This work could open up new prospects for the development of high‐performance MXenes.

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“…The layered morphologies and unique properties of 2D materials make them strong candidates for use as excellent wave absorbers. 98,99 PDC-2D materials composites have been shown to achieve good impedance and attenuation matching via tuning of the dielectric properties of PDCs, which also endow the composites with good resistance to high temperatures and oxidative environments. 100 A SiCN ceramic composite with multi-layer graphene (PDCs-SiCN-MLG) has been shown to exhibit a minimum reflection loss (RL min ) of À54.0 dB at a thickness of 3.0 mm.…”

Section: Electromagnetic Wave Absorptionmentioning

confidence: 99%