Dimensional Design and Core–Shell Engineering of Nanomaterials for Electromagnetic Wave Absorption

• Published in: Advanced materials (Weinheim) Vol. 34; no. 11; pp. e2107538 - n/a
• Main Authors: Wu, Zhengchen, Cheng, Han‐Wen, Jin, Chen, Yang, Bintong, Xu, Chunyang, Pei, Ke, Zhang, Huibin, Yang, Ziqi, Che, Renchao
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01-03-2022
• Subjects: Absorption; Core-shell structure; core–shell structures; Electromagnetic radiation; electromagnetic wave absorption; Energy dissipation; low‐dimensional materials; Materials science; multifunctional devices; Nanomaterials; Oxidation resistance; Structural engineering; core-shell structures; low-dimensional materials; electromagnetic wave absorption; multifunctional devices
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.202107538

Electromagnetic (EM) wave absorption materials possess exceptionally high EM energy loss efficiency. With vigorous developments in nanotechnology, such materials have exhibited numerous advanced EM functions, including radiation prevention and antiradar stealth. To achieve improved EM performance and multifunctionality, the elaborate control of microstructures has become an attractive research direction. By designing them as core–shell structures with different dimensions, the combined effects, such as interfacial polarization, conduction networks, magnetic coupling, and magnetic–dielectric synergy, can significantly enhance the EM wave absorption performance. Herein, the advances in low‐dimensional core–shell EM wave absorption materials are outlined and a selection of the most remarkable examples is discussed. The derived key information regarding dimensional design, structural engineering, performance, and structure–function relationship are comprehensively summarized. Moreover, the investigation of the cutting‐edge mechanisms is given particular attention. Additional applications, such as oxidation resistance and self‐cleaning functions, are also introduced. Finally, insight into what may be expected from this rapidly expanding field and future challenges are presented.
Harnessing the coordination between the components and microstructures of low‐dimensional core–shell structure materials represents a paradigm shift in the design of electromagnetic wave absorbents with radiation prevention and antiradar stealth functions.