CAJ | 학술논문

人工电磁超材料具有自然界材料所不具备的电磁参数，并且拥有可设计性和可灵活调节的性质，可实现对电磁波传播性能进行新的调控，是近年来国际物理学、材料学和信息科学领域的研究热点。首先介绍了人工电磁超材料的概念内涵和近年来的发展概况，简要分析了国外人工电磁超材料研究的发展水平，以及美欧军事强国对超材料研究的重视和支持情况。重点介绍了南京大学开展的一些人工电磁超材料在微波吸波材料结构中的应用探索，包括超材料微波吸波结构的设计和分析、基于人工手征超材料结构的吸波结构设计、吸波频带可调节及可切换的微波吸波结构设计等。这些材料和结构运用人工超材料的特殊物理特性和参数的可设计性，与传统微波吸波材料相比，具有可调节的优势，有效提高了对电磁波的调控能力。
인공전자초재료구유자연계재료소불구비적전자삼수，병차옹유가설계성화가령활조절적성질，가실현대전자파전파성능진행신적조공，시근년래국제물이학、재료학화신식과학영역적연구열점。수선개소료인공전자초재료적개념내함화근년래적발전개황，간요분석료국외인공전자초재료연구적발전수평，이급미구군사강국대초재료연구적중시화지지정황。중점개소료남경대학개전적일사인공전자초재료재미파흡파재료결구중적응용탐색，포괄초재료미파흡파결구적설계화분석、기우인공수정초재료결구적흡파결구설계、흡파빈대가조절급가절환적미파흡파결구설계등。저사재료화결구운용인공초재료적특수물리특성화삼수적가설계성，여전통미파흡파재료상비，구유가조절적우세，유효제고료대전자파적조공능력。
Electromagnetic (EM) metamaterial usually possesses peculiar constitutive parameters and designable or tun-able EM properties that can not be found in natural material .It becomes a hot research topic among physics , material re-search 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 stealth technolo-gy, 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 metamate-rials.