弹性波与周期介质相互作用及声子晶体研究现状

Interaction of Elastic Wave With Periodic Medium and Review on Phononic Crystal

声子晶体是一种新型的声学功能材料,对声子晶体的研究引起了人们极大关注.介绍了国内外声子晶体的研究状况,分析了声子晶体研究中存在的问题,阐述了声子晶体的某些概念、特征和基本研究方法,强调了由于禁带和缺陷态的存在可以有效地控制周期介质中声波的传播,讨论了声子晶体研究的未来发展方向.

Phononic crystal is a novel type of acoustic functional material, study of which has aroused great attention of people all over the world. The researches on phononic crystal are reviewed and the questions on research of phononic crystal analyzed. Also some conccpto, the property and the basic calculating method arc discussed. It is emphasized that the propagation of the elastic wave in medium with periodic structure may be controlled by the existence of the gap and defect. The prospect of the research on phononic crystal is discussed as well.