| Автор | Y El Hassouani |
| Автор | E H El Boudouti |
| Автор | B Djafari-Rouhani |
| Автор | R Rais |
| Дата выпуска | 2007-12-01 |
| dc.description | Using a Green's function method, we investigate theoretically the eigenmodes of a finite one-dimensional phononic crystal (superlattice) composed of N alternating layers of an elastic solid and an ideal fluid. If the finite superlattice is free of stress on both sides, we show that there are always N-1 modes in the allowed bands whereas there is one and only one mode corresponding to each band gap. This mode is either a surface mode in the band gap or a constant-frequency confined band-edge mode. If the finite superlattice is bounded from one side by a homogeneous fluid whereas the other surface is kept free, then an incident phonon from the fluid is perfectly reflected, however this reflection takes place with a large delay time if the frequency of the incident phonon coincides with the eigenfrequency of a surface mode |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2007 IOP Publishing Ltd |
| Название | Surface and confined acoustic waves in finite size 1D solid-fluid phononic crystals |
| Тип | paper |
| DOI | 10.1088/1742-6596/92/1/012113 |
| Electronic ISSN | 1742-6596 |
| Print ISSN | 1742-6588 |
| Журнал | Journal of Physics: Conference Series |
| Том | 92 |
| Первая страница | 12113 |
| Последняя страница | 12116 |
| Выпуск | 1 |
