文章信息/Info

Title:

Generalized Metamaterials: Merging of Metamaterials and Conventional Materials

作者:

周濟

清華大學(xué)材料學(xué)院，北京 100084

Author(s):

ZHOU Ji

School of Materials Science & Engineering, Tsinghua University, Beijing 100084,China

關(guān)鍵詞:

超材料; 材料設(shè)計; 功能材料; 常規(guī)材料; 人工原子

Keywords:

metamaterials; material design; functional materials; conventional materials; meta�瞐tom

DOI:

10.7502/j.issn.1674-3962.2018.07.01

文獻標(biāo)志碼:

A

摘要:

超材料指的是通過人工結(jié)構(gòu)實現(xiàn)超常特性的一大類新型材料，有望成為一系列顛覆性技術(shù)的源頭。這類材料在基本結(jié)構(gòu)、性能和實現(xiàn)方法上與常規(guī)材料完全不同，其各自的優(yōu)勢和劣勢也涇渭分明——常規(guī)材料源于自然，易于獲得而難于設(shè)計；超材料正好相反，易于設(shè)計，但在很多情況下卻難于獲得。作者課題組提出了通過超材料與常規(guī)材料融合發(fā)展兼具超材料和常規(guī)材料優(yōu)勢的新型功能材料的思想，在此基礎(chǔ)上發(fā)展出了介質(zhì)基電磁超材料、自然超常介質(zhì)以及一些基于超材料設(shè)計思想的常規(guī)材料，從而形成了廣義超材料的概念。這些研究工作拓展了超材料的范疇和其思想的指導(dǎo)意義，可為材料性能的改進與提高提供一種新的途徑。

Abstract:

Metamaterials are a class of materials that achieve novel properties from artificial structures, and expected to be the source of a series of disruptive technologies. These artificial materials are completely different from conventional materials in their basic structures, properties and synthesis methods. The interface between them is clearly distinct——conventional materials come from nature, easy to obtain and difficult to design; metamaterials are the opposite, easy to design, but usually difficult to obtain. We proposed a strategy for development of new functional materials by merging of metamaterials and conventional materials. Based on this approach, we have developed dielectric electromagnetic metamaterials, natural abnormal electromagnetic media, and a series of conventional materials based on the idea of metamaterial design. A new concept, generalized metamaterials, is formed on this basis, to expand the scope and significance of metamaterials, and provide a new way for improving properties of materials.