Elastic wave band gaps and defect states in two-dimensional composites
Using the plane-wave expansion method, we study the propagation of elastic waves through two-dimensional (2-D) periodic composites which exhibit full band gaps for all the polarizations and directions of the displacements. Defect states created inside those band gaps are also studied by disturbing t...
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| Published in: | The Journal of the Acoustical Society of America Vol. 101; no. 3; pp. 1256 - 1261 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-03-1997
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| Online Access: | Get full text |
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| Summary: | Using the plane-wave expansion method, we study the propagation of elastic waves through two-dimensional (2-D) periodic composites which exhibit full band gaps for all the polarizations and directions of the displacements. Defect states created inside those band gaps are also studied by disturbing the periodicity of the lattice. Systems exhibiting such kinds of states can be used as acoustical filters. |
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| ISSN: | 0001-4966 1520-8524 |
| DOI: | 10.1121/1.418156 |