| 一维声子晶体缺陷态的研究 |
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| 引用本文： | 朱敏,方云团,沈廷根. 一维声子晶体缺陷态的研究[J]. 人工晶体学报, 2005, 34(3): 536-541 |
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| 作者姓名： | 朱敏 方云团 沈廷根 |
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| 作者单位： | 江苏大学物理系,镇江,212003;镇江船艇学院物理系,镇江,212003 |
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| 基金项目： | 江苏省自然科学基金(BK2004059)资助 |
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| 摘 要： | 用特征矩阵法计算了声波在包含缺陷的一维声子晶体中的传播规律.其带隙结构与不包含缺陷结构的带隙结构相比有明显的不同,系统的透射率不仅与掺杂或替换的介质种类和层数有关,而且与介质的厚度有关.对于通带中的固定频率,透射率随介质厚度的增加呈周期性变化.
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| 关 键 词： | 声子晶体 特征矩阵 缺陷 带隙结构 |
| 文章编号： | 1000-985X(2005)03-0536-06 |
Study on One Dimension Phononic Crystal with Defects |
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| ZHU Min,FANG Yun-tuan,SHEN Ting-gen. Study on One Dimension Phononic Crystal with Defects[J]. Journal of Synthetic Crystals, 2005, 34(3): 536-541 |
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| Authors: | ZHU Min FANG Yun-tuan SHEN Ting-gen |
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| Affiliation: | ZHU Min~1,FANG Yun-tuan~2,SHEN Ting-gen~1 |
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| Abstract: | The acoustic wave propagation in one dimension phononic crystal with defects was studied by eigen matrix method. Comparing with the periodical structure, its band-gap structure has some characteristics. The transmitting rate of the system is great related to not only the form of defect but also the kind and thickness of the media. The transmitting rate of the system varies in period for the fixed frequency lying in the pass band when the thickness of media continuously increases. |
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| Keywords: | phononic crystal eigen matrix defects band-gap structure |
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