Do you want to cut the piezo ceramic?  If so use a diamond saw from a
jewelry supply house.  If you just want to separate the electrodes so you
can have multiple elements on a single ceramic, you need to etch the metal
plating.  The plating is usually silver or aluminum.  Again a jewelry supply
house will have what you need.

Doug Butler
Sherpa Engineering


> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Scott Stephens
> Sent: Tuesday, June 04, 2002 12:26 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: Phased arrays, ultrasound etc.
>
>
> From: Goring, Steve <Steve.Goring@BSKYB.COM>
> Subject: Re: [EE]: Phased arrays, ultrasound etc.
>
>
> >I am developing a small ROV and the next bit involves some
> >underwater sonar ( freq range 40 - 500 khz ).
>
> I've always wanted a pro-active fishing bot. I need a graph of energy vs.
> range for stunning various fish with underwater arcs. Anyways its easy to
> electricaly mill metal patterns on piezo disks, but I didn't have
> much luck
> etching the BaTiO ceramic. Anyone know a good etchant for piezo disks?
>
> Scott
>
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