周期性声学栅对声子晶体相空间的调控研究  

Phase Space Modulation of Sonical Crystal by Periodic Acoustic Grating

作　　者：姚官清 邓科[1] 何兆剑[1] 赵鹤平[1] 

机构地区：[1]吉首大学物理与机电工程学院,吉首416000

出　　处：《人工晶体学报》2016年第4期1088-1093,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(11464012;11304119;11264011;11564012;11564013);湖南省教育厅科学研究项目(13A077;13B091);湖南省吉首大学校级课题资助项目(14JDY039)

摘　　要：基于周期性声学栅修饰的二维声子晶体,本文从理论上计算其能带结构、等频率色散线,详细讨论引入周期性声学栅后晶体相空间的各种改变。计算结果表明:周期性声学栅的引入能够灵活调制声子晶体的色散关系,更加有效地利用晶体中存在的各种模式,由此可以实现一些较为新颖的声波人工操控。Based on two-dimensional sonical crystals（ SC） with periodic acoustic gratings,the band structure and equivalent frequency contours are calculated,and the variety changes of the phase space are discussed. The calculated results show that the dispersion relation of two-dimensional sonical crystals can be easily modulated by using the periodic acoustic gratings and all modes which exist in sonical crystals can be utilized effectively. By using our theoretical results,some novel artificial manipulations of acoustic waves are achieved.

关 键 词：声子晶体 周期性声学栅 相空间 人工操控 

分 类 号：O78[理学—晶体学]