4.7 Review

3D printing metamaterials for highly efficient electromagnetic wave absorption

Journal

SCIENCE CHINA-MATERIALS
Volume 66, Issue 4, Pages 1283-1312

Publisher

SCIENCE PRESS
DOI: 10.1007/s40843-022-2352-4

Keywords

metamaterials; electromagnetic wave absorber; 3D printing

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Metamaterials (MMs) with artificial structures have exceptional physical properties. By designing and arranging unit structures with special physical properties, electromagnetic wave absorption (MMAs) can be achieved. Subwavelength scale unit structures are essential for surpassing the performance limits of bulk materials, and matching the manufacturing processes is crucial. The rapidly developing 3D printing technology provides a simple and efficient manufacturing method for researching and preparing MMAs. This review introduces the concept and development of MMAs, focuses on using 3D printing technology to manufacture MMAs, and discusses the limitations and prospects of combining MMs and 3D printing.
Metamaterials (MMs) with artificial structures have extraordinary physical properties that cannot be found in traditional materials. MMs with electromagnetic wave absorption (MMAs) can be prepared through the structural design and arrangement of unit structures with special physical properties. These unit structures at the subwavelength scale are fundamental for MMAs to surpass the performance limits of bulk materials, so the matching of manufacturing processes is particularly important. The rapidly developing three-dimensional (3D) printing technology has shown great advantages and potential in manufacturing complex materials and structures, providing a simple, rapid, and efficient manufacturing method for researching and preparing MMAs. In this review, we introduce the concept and development of MMAs and focus on the research status of using 3D printing technology to manufacture MMAs. Furthermore, we briefly introduce their typical applications, discuss the inadequacies of the current development of MMs and the limitations of 3D printing technology in preparing MMAs, and propose the prospects for developing the combination of MMs and 3D printing.

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