硬质芯体及其包覆层构成的复合结构称为散射单元,散射单元按照特定的排列方式可以构成声子晶体.文章采用有限元方法分别计算了立方散射单元构成的一维声子晶体及简单立方结构三维声子晶体的振动特性,结果表明,两种声子晶体的振动带隙有较好的一致性,因此,对三维声子晶体振动带隙的研究可以简化为对一维声子晶体振动带隙的研究.叠加层数、芯体材料对一维声子晶体振动带隙的影响在文中进行了讨论.最后,声子晶体的振动特性测试结果验证了文中的结论.
参考文献
[1] | Joannopoulos J D;Meade R D;Winn J N.Photonic Grustals[M].Princeton:Princeon University Press,1995 |
[2] | Yablonovitch E .Inhibited Spontaneous Emission in Solid-state Physics and Electronics[J].Physical Review Letters,1987,58:2059. |
[3] | John S .Strong Location of Photons in Certain Disordered Dielectric Superlattices[J].Physical Review Letters,1987,58:2486. |
[4] | 温激鸿,韩小云,王刚,赵宏刚,刘耀宗.声子晶体研究概述[J].功能材料,2003(04):364-367. |
[5] | 王刚,温激鸿,韩小云,赵宏刚.二维声子晶体带隙计算中的时域有限差分方法[J].物理学报,2003(08):1943-1947. |
[6] | 赵宏刚,韩小云,温激鸿,王刚.新型声学功能材料--声子晶体[J].材料科学与工程学报,2003(01):153-156. |
[7] | 吴福根,刘有延.二维周期性复合介质中声波带隙结构及其缺陷态[J].物理学报,2002(07):1434-1438. |
[8] | 吴福根 .声子晶体中的带隙及缺陷态的研究[D].华南理工大学,2001. |
[9] | Wu FG.;Liu ZY.;Liu YY. .Acoustic band gaps in 2D liquid phononic crystals of rectangular structure[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2002(2):162-165. |
[10] | Kushwaha M S;Djafari-Rouhani B .Band-gap Engineeringin Two-dimmsional Periodic Photonic Crystals[J].Journal of Applied Physics,2000,88:2877. |
[11] | Vasseur JO.;Chenni B.;Djafari-Rouhani B.;Dobrzynski L. Prevost D.;Deymier PA. .Experimental and theoretical evidence for the existence of absolute acoustic band gaps in two-dimensional solid phononic crystals[J].Physical review letters,2001(14):3012-3015. |
[12] | Kafesaki M.;Economou EN.;Penciu RS. .Air bubbles in water: A strongly multiple scattering medium for acoustic waves[J].Physical review letters,2000(26):6050-6053. |
[13] | Garcla-Pablos D et al.Theory and Experiments on Elastic Band Gaps[J].Physical Review Letters,2000,84:4349. |
[14] | Liu Z Y et al.Elastic Wave Scattering by Periodic Structures of Spherical Objects: Theory and Experiment[J].Physical Review B,2000,62(04):2446. |
[15] | 清华大学工程力学系.机械振动[M].北京:机械工业出版社,1980:320. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%