Spherical surface acoustic wave (SAW) sensor: Difference between revisions - Wikipedia

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'''Surface Acoustic Waves''' travel along the surface of a [[medium]] exhibiting [[elasticity]] with exponentially decaying [[amplitude]] along depth. It's shown that using MEMS-IDT technology the SAW waves can be used to sense various gases. Sensitivity up to 10 ppm of [[hydrogen]] using spherical Ball SAW device is obtained.

<ref>Proceedings of 20th International Congress on Acoustics, ICA 2010 23–27 August 2010, Sydney, Australia.</ref>.

==Principles==