| Issue |
EPL
Volume 82, Number 1, April 2008
|
|
|---|---|---|
| Article Number | 10002 | |
| Number of page(s) | 5 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/82/10002 | |
| Published online | 12 March 2008 | |
Ultrasonic cavity solitons
1
Departament de Física Aplicada, Universitat Politècnica de València - Crta. Natzaret-Oliva s/n, 46730 Grau de Gandia, Spain, EU
2
Departament d'Òptica, Universitat de València - Dr. Moliner 50, 46100 Burjassot, Spain, EU
Corresponding author: iparjona@upvnet.upv.es
Received:
19
September
2007
Accepted:
8
February
2008
We report on a new type of localized structure, an ultrasonic cavity soliton, supported by large aspect-ratio acoustic resonators containing viscous media. These states of the acoustic and thermal fields are robust structures, existing whenever a spatially uniform solution and a periodic pattern coexist. Direct proof of their existence is given both through the numerical integration of the model and through the analysis and numerical integration of a generalized Swift-Hohenberg equation, derived from the microscopic equations under conditions close to nascent bistability. An analytical solution for the ultrasonic cavity soliton is given.
PACS: 05.45.-a – Nonlinear dynamics and chaos / 47.54.-r – Pattern selection; pattern formation / 43.25.+y – Nonlinear acoustics
© EPLA, 2008
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