Can You ID This Crystal?

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Offline ScientificSorcerer

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Can You ID This Crystal?
« on: 13/02/2014 09:50:26 »
I Am looking A Specific crystal which has "Piezoelectric properties" The crystal is see through, like glass and it is reasonably strong. What crystal is this.

I need help finding this kind crystal for a science experiment.

I looked on the wiki and found this http://en.wikipedia.org/wiki/Piezoelectricity
Scroll down about half way and you'll find a list of materials, some of which might be potentially good for my application. but I'm no geologist, I need help.

What I'm trying to do is make a speaker which is like a plate of glass, the details are complicated, but all I need is a clear piezoelectric crystal to make the plate out of.

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Offline RD

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Re: Can You ID This Crystal?
« Reply #1 on: 13/02/2014 11:10:17 »
This gadget may work on an existing window ... http://youtu.be/MQeOq-YSuKU?t=2m50s

[ DIY wired version ]

Piezoelectric transducers may also work, rather than electromagnetic.
« Last Edit: 13/02/2014 11:21:37 by RD »

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Offline evan_au

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Re: Can You ID This Crystal?
« Reply #2 on: 13/02/2014 20:17:47 »
Quartz has been used for many years for its piezoelectric properties.
Single crystals are quite clear. It is a very hard mineral, and difficult to cut into a large flat plate.

The amount of deformation it provides is not great, so it won't be a thunderous sound.
You also need clear electrodes - like Indium Tin Oxide (or someday, maybe Graphene).

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Offline Bored chemist

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Re: Can You ID This Crystal?
« Reply #3 on: 13/02/2014 21:14:21 »
Quite a lot of piezoelectric materials are transparent.
There's a list here
http://en.wikipedia.org/wiki/Piezoelectricity
and you can easily check on which ones let light through.
Growing single crystals of some of them may be very difficult.
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