As a new frontier in materials science,metamaterials have experienced a boom in the past two decades.This research field began with artificially structured materials exhibiting extraordi-nary electromagnetic properties unavailable in nature;now,it extends to a large family of artificial-material systems with wide-ranging,extraordinary,and outstanding properties for appli-cations in fields such as electromagnetics,optics,mechanics,ther-modynamics,and acoustics,based on engineered functional units instead of inherent characteristics.The focus of metamaterial research has eventually shifted from new principles,new phenom-ena,and new structures to new properties and new functions for technological applications.Metamaterials are increasingly antici-pated to provide technological solutions to many challenges in engineering.The nature of metamaterials is transforming through an evolutionary process from engineered materials to engineering materials.This special issue reflects on some clues to this historical process.

John Pendry;Ji Zhou;Jingbo Sun

Department of Physics,Imperial College London,London SW7 2AZ,UK;School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China

工程（英文）

[1]John Pendry;Ji Zhou;Jingbo Sun-.Metamaterials:From Engineered Materials to Engineering Materials)[J].工程（英文）,2022(10):1-2

modynamics

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