TECH: Electrolytic polymers (or whatever)?

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2 total messages Started by David Barchas Tue, 26 Jan 1993 01:15

#3060

Author: David Barchas
Date: Tue, 26 Jan 1993 01:15

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Does anyone know of a polymer or something that bends when an elcetric
current is passed through it.  It needs to be very fast acting,
although if you only know of something that can point me in the right
direction it would be very apreciated.  I am working on something
which would use that sort of thing.  I guess it can also be a plastic
that will vibrate extremely fast almost buzz.  I guess piezo film does
that but I don't know where to get just a small square or the like,
except in a radioshack buzzer(which is not what I want).

Any replies are appreciated.

thank you,

P.S.  Where do I send my unsubscribe message for sci.virtual-worlds.

David Barchas (Barchasd@mentor.cc.purdue.edu) | "Oops..."
Purdue University - Computer Science          |  Famous last word.


[MODERATOR'S NOTE:  You wouldn't be designing a tactile feedback
device, would you?  :-)  -- Bob Jacobson]

Re: TECH: Electrolytic polymers (or whatever)?

#3097

Author: Joe Rosen
Date: Wed, 27 Jan 1993 21:52

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In <C1FsuK.FDs@mentor.cc.purdue.edu> barchasd@mentor.cc.purdue.edu
(David Barchas) writes:

>Does anyone know of a polymer or something that bends when an elcetric
>current is passed through it.  It needs to be very fast acting,
>although if you only know of something that can point me in the right
>direction it would be very apreciated.  I am working on something
>which would use that sort of thing.  I guess it can also be a plastic
>that will vibrate extremely fast almost buzz.  I guess piezo film does
>that but I don't know where to get just a small square or the like,
>except in a radioshack buzzer(which is not what I want).
>Any replies are appreciated.

don't know about polymer material...

     ... but have experimented with nickel-titanium alloy wires that
react (i.e. "bend" -- expand and contract) when a current is applied
(anywhere from 50 to approx. 400 mA will work ok)...

they can be purchased in sample quantities, along with a booklet
describing how to use 'em --

     -- from a company called:

mondo-tronics
2476 verna ct.
san leandro, CA 94577
1-800-374-5764

     tons of lil' advertisments for this stuff (i.e. the mondo-tronics
sampler) can be found in the magazine rack electronics books (like
"radio electronics" magazine for example)...

... such magazines are a neat source for weird lil' companies sellin'
all kinds 'o bizarre "garage" variety components.

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