| 钟兰花,吴福根,彭程万.二维点缺陷声子晶体中缺陷填充率对能带的影响[J].,2009,28(2):140-146 |
| 二维点缺陷声子晶体中缺陷填充率对能带的影响 |
| The influence of defect filling fraction on the energy band in 2D point defect phononic crystals |
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| 中文摘要: |
| 用超元胞的平面波展开法,计算了存在点缺陷的二维水/水银声子晶体的能带结构和压强分布。通过改变5×5超元胞中心圆柱体的半径而引入缺陷,发现缺陷填充率（Fd）小于或大于正常柱体填充率（F0）一定数值时（如当F0=0.35,Fd |
| 英文摘要: |
| Using the super-cell plane wave expansion method,we calculate the band structure and pressure distribution of two-dimensional（2D）water/mercury phononic crystals with point defects.The point defect is created by changing the radius of the center cylinder in the 5×5 super-cell.It is found that defect states appear when the defect filling fraction（Fd）is larger or less than the regular filling fraction（F0）by a certain value（e. g.when F0=0.35,Fd |
| DOI：10.11684/j.issn.1000-310X.2009.02.012 |
| 中文关键词: 声子晶体 缺陷态 能带 |
| 英文关键词: Phononic crystal Defect state Energy band |
| 基金项目:国家自然科学基金(批准号:10674032)资助项目;湛江师范学院校级理科一般项目(编号:L0704) |
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