文章信息/Info

Title:

Exploration on Metamaterial applications to Microwave Absorbers

文章編號:

XXX

作者:

馮一軍; 朱博; 徐培華; 趙俊明; 姜田

(南京大學(xué) 電子科學(xué)與工程學(xué)院,南京,210093)

Author(s):

Yijun Feng;  Bo Zhu;  Peihua Xu;  Junming Zhao;  Tian Jiang

(School of Electronic Science and Engineering, Nanjing University, 210093, China)

關(guān)鍵詞:

電磁超材料; 吸波材料; 電磁波極化; 電磁參數(shù)

分類號:

XXX

DOI:

10.7502/j.issn.1674-3962.2013.08.03

文獻標志碼:

X

摘要:

人工電磁超材料具有自然界材料所不具備的電磁參數(shù)，并且擁有可設(shè)計性和可靈活調(diào)節(jié)的性質(zhì)，可實現(xiàn)對電磁波傳播性能進行新的調(diào)控，是近年來國際物理學(xué)、材料學(xué)和信息科學(xué)領(lǐng)域的研究熱點。本文首先介紹了人工電磁超材料的概念內(nèi)涵和近年來的發(fā)展概況，簡要分析了國外人工電磁超材料研究的發(fā)展水平，以及美歐軍事強國對超材料研究的重視和支持情況。然后重點介紹了南京大學(xué)開展的一些人工電磁超材料在微波吸波材料結(jié)構(gòu)中的應(yīng)用探索，包括超材料微波吸波結(jié)構(gòu)的設(shè)計和分析、基于人工手征超材料結(jié)構(gòu)的吸波結(jié)構(gòu)設(shè)計、吸波頻帶可調(diào)節(jié)及可切換的微波吸波結(jié)構(gòu)設(shè)計等。這些材料和結(jié)構(gòu)運用人工超材料的特殊物理特性和參數(shù)的可設(shè)計性，與傳統(tǒng)微波吸波材料相比，具有可調(diào)節(jié)的優(yōu)勢，有效提高了對電磁波的調(diào)控能力。

Abstract:

Electromagnetic (EM) metamaterial usually possesses peculiar constitutive parameters and designable or tunable EM properties that can not found in natural material. It becomes a hot research topic among physics, material research and information science in recent years due to its ability of manipulation of electromagnetic wave propagation. In this paper, we first describe the theoretical concept of the EM metamaterial and analyze the present research status with the emphasis on how the western countries support the metamaterial research. In the second part, we report several attempts by group in Nanjing University that are trying to apply the metamaterial concept to microwave absorbers or steal technology, including design of metamaterial microwave absorbers, chiral metamaterial based microwave absorber, tunable or switchable microwave absorbers. Comparing with conventional microwave absorber, these designs have the advantages of designable physical parameters and tunable properties, enhancing the ability of manipulating the EM wave with metamaterials.