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02:59 Jun-30-2006
Ilse Ruiz
Matching Layer Material for Air-Coupling @ 200-500 kHz

Hi,

I am looking for a matching layer material to air-couple piezo sensors at 300kHz (or 200-500 kHz).

I have been using the MA400A1 Murata sensors so far, but their 1.1cm diameter is too big for my application, and that is why I am building my own. These Muratas have a thick (~1.5mm) white porous material at the front.

Does someone know what type of material it could be?

I have been looking for different filtration membranes (polyetersulfone, cellulose, etc) to use as matching layers, but most of them are too thin to work with (~100 um).

Any suggestion?

Thanks in advance,
Ilse




 


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