音叉型声子晶体能带结构研究  

Study on Band Structure of Tuning Fork Phononic Crystal

作　　者：雷实建[1] 吴利华[1] 颜琳[1] 赵鹤平[1] 

机构地区：[1]吉首大学物理科学与信息工程学院,吉首416000

出　　处：《人工晶体学报》2010年第1期144-148,共5页Journal of Synthetic Crystals

基　　金：湖南省自然科学基金(No.09JJ6011);湖南省高等学校科研基金(No.08A055);湖南省教育厅科学研究项目(09C787)

摘　　要：利用超元胞法研究音叉型散射体构成的声子晶体的声波带结构,分析音叉型散射体的几何参数(板的厚度,圆柱体的半径和高)对能带结构的影响。研究结果表明:这种新型的声子晶体比传统声子晶体具有更优的带隙,而且带隙的调节机制更为简单,结果还表明超元胞法是研究这一类声子晶体能带结构的一种有效方法。By using the supercell calculation method base on super cell,the band structure of tuning fork phononic crystals was calculated.The geometric parameters of scatterer,i.e.the thickness of board,radius and height of circular cylinder,which influence the band structure were analyzed.Compared with the traditional phononic crystal,it is found that a more superior band gaps exist in this kind of new phononic crystal.Moreover,the calculated results indicate that the adjustment mechanism of tuning fork phononic crystals band gap is very simple and convenient.The super cell method is an effective method to study the band structure of this kind of phononic crystal.

关 键 词：音叉型声子晶体 超元胞法 带隙 

分 类 号：O73[理学—晶体学]