| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5019667 | Sensing and Bio-Sensing Research | 2016 | 8 Pages |
Abstract
We theoretically investigate surface acoustic waves with horizontal polarization (SH-SAWs) propagating in a three-layer system consisting of an elastic substrate and two viscoelastic overlayers. For the limiting case of an acoustically thin middle layer and an infinite top layer, we derive analytical expressions for the phase velocity shift and the wave attenuation. These expressions demonstrate the importance of taking into account the viscoelastic coupling between the two overlayers. Numerical calculations using a combined Maxwell/Voigt scheme confirm our analytical results and also indicate that it is possible for viscoelasticity to cause SH-SAWs to vanish.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
A. Vikström, M.V. Voinova,