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Review
. 2022 Dec;34(52):e2200070.
doi: 10.1002/adma.202200070. Epub 2022 Jul 19.

Flexible Metamaterial Electronics

Shan Jiang  1   2 , Xuejun Liu  1   2 , Jianpeng Liu  1   2 , Dong Ye  1   2 , Yongqing Duan  1   2 , Kan Li  1   2 , Zhouping Yin  1   2 , YongAn Huang  1   2
Affiliations
Review

Flexible Metamaterial Electronics

Shan Jiang et al. Adv Mater. 2022 Dec.

Abstract

Over the last decade, extensive efforts have been made on utilizing advanced materials and structures to improve the properties and functionalities of flexible electronics. While the conventional ways are approaching their natural limits, a revolutionary strategy, namely metamaterials, is emerging toward engineering structural materials to break the existing fetters. Metamaterials exhibit supernatural physical behaviors, in aspects of mechanical, optical, thermal, acoustic, and electronic properties that are inaccessible in natural materials, such as tunable stiffness or Poisson's ratio, manipulating electromagnetic or elastic waves, and topological and programmable morphability. These salient merits motivate metamaterials as a brand-new research direction and have inspired extensive innovative applications in flexible electronics. Here, such a groundbreaking interdisciplinary field is first coined as "flexible metamaterial electronics," focusing on enhancing and innovating functionalities of flexible electronics via the design of metamaterials. Herein, the latest progress and trends in this infant field are reviewed while highlighting their potential value. First, a brief overview starts with introducing the combination of metamaterials and flexible electronics. Then, the developed applications are discussed, such as self-adaptive deformability, ultrahigh sensitivity, and multidisciplinary functionality, followed by the discussion of potential prospects. Finally, the challenges and opportunities facing flexible metamaterial electronics to advance this cutting-edge field are summarized.

Keywords: electronic skin; flexible electronics; metamaterials; micro-/nanofabrication.

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