Following up Dear Prof Aleksey. Regards

Dear Professor Dr. P. Contreras,

many thanks for Your interest in this problem.

Regards

My pleasure Dear Prof. Aleksey. It is a question that really deserves attention. Regards

I would imagine they are attractive in that field because of the nature of the biochemical material being sensed (mostly fluids). SH waves do not radiate (much) energy into the material under test.

This means all the acoustic energy is in the wave and not lost. This translates to better quality factors and better sensitivity.

In rare cases, the energy leakage can also alter the material under test itself, and cause a chain reaction, or even just "stir" it around.

Many thanks for the participants in the discussion.