二维声子晶体能带特性研究  

Bandgap properties of two-dimensional phononic crystals

作　　者：徐丽[1] 

机构地区：[1]临沂大学实验管理中心,山东临沂276000

出　　处：《激光杂志》2013年第6期30-31,共2页Laser Journal

基　　金：国家自然科学基金课题号(41101263);山东省自然科学基金(ZR2011AL013);山东省科技发展计划项目:2012GNC11015)

摘　　要：介绍声子晶体的概念及其种类,基于平面波展开法,设计了以环氧树脂为基底,铝为散射体材料的二维XY模式声子晶体,模拟得到了能带范围为5.838KHz至8.981KHz,比较了铝、铝2和铝3的能带结构,得到随着铝密度和杨氏模量的增加,剪切模量的减少,能带宽度增加。同时还比较了随着散射体半径的增加,计算得到能带宽度也增加了。结论为二维XY模式声子晶体器件的制作提供理论参考。This paper introduces the concept and category of phononic crystal, based on plane wave expansion method, designed with epoxy resin as the substrate, aluminum for the two - dimensional XY model phononic crystal scattering material, the band range of 5. 838KHz - 8.981 KHz, the aluminum, A1 2 and A1 3 band structure, with increasing aluminum the density and Young＇s modulus, shear modulus reduction, band width increase. At the same time also compared with the increase of the cylinder radius, the calculated energy band width also increased. To provide theoretical reference for making conclusions two - dimensional XY mode Phonon Crystal device.

关 键 词：声子晶体 能带特性 平面波展开法 

分 类 号：TN248[电子电信—物理电子学] O431.1[机械工程—光学工程]