Rambach, R.W., Taiber, J., Scheck, C.M.L., Meyer, C., Reboud, J. , Cooper, J.M. and Franke, T. (2016) Visualization of surface acoustic waves in thin liquid films. Scientific Reports, 6, 21980. (doi: 10.1038/srep21980) (PMID:26917490) (PMCID:PMC4768107)
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Abstract
We demonstrate that the propagation path of a surface acoustic wave (SAW), excited with anWe demonstrate that the propagation path of a surface acoustic wave (SAW), excited with an interdigitated transducer (IDT), can be visualized using a thin liquid film dispensed onto a lithium niobate (LiNbO3) substrate. The practical advantages of this visualization method are its rapid and simple implementation, with many potential applications including in characterising acoustic pumping within microfluidic channels. It also enables low-cost characterisation of IDT designs thereby allowing the determination of anisotropy and orientation of the piezoelectric substrate without the requirement for sophisticated and expensive equipment. Here, we show that the optical visibility of the sound path critically depends on the physical properties of the liquid film and identify heptane and methanol as most contrast rich solvents for visualization of SAW. We also provide a detailed theoretical description of this effect.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Cooper, Professor Jonathan and Reboud, Dr Julien and Franke, Professor Thomas |
| Authors: | Rambach, R.W., Taiber, J., Scheck, C.M.L., Meyer, C., Reboud, J., Cooper, J.M., and Franke, T. |
| College/School: | College of Science and Engineering > School of Engineering |
| Journal Name: | Scientific Reports |
| Publisher: | Nature Publishing Group |
| ISSN: | 2045-2322 |
| ISSN (Online): | 2045-2322 |
| Published Online: | 26 February 2016 |
| Copyright Holders: | Copyright © 2016 The Authors |
| First Published: | First published in Scientific Reports 6:21980 |
| Publisher Policy: | Reproduced under a Creative Commons License |
| Data DOI: | 10.5525/gla.researchdata.290 |
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