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- From: tome@mcs213g.cs.umr.edu (Tom Erb)
- Subject: Re: Piezoelectric Materials
- References: <92317.170747TJR122@psuvm.psu.edu>
- Date: Fri, 13 Nov 1992 15:16:57 GMT
- Nntp-Posting-Host: mcs213g.cs.umr.edu
- Organization: University of Missouri - Rolla
- Sender: cnews@umr.edu (UMR Usenet News Post)
- Message-ID: <1992Nov13.151657.17224@umr.edu>
- Lines: 44
-
- In article <92317.170747TJR122@psuvm.psu.edu> <TJR122@psuvm.psu.edu> writes:
- >Hi Everybody! My name is Tom, and I'm a student at Penn State in Electrical
- >Engineering. I was wondering if anybody knows anything about piezoelectric
- >materials. What I want to know is if it's possible to draw out an element,
- >like a strand of hair, of piezoelectric material (by any process) to obtain
- >a "wire" through which you could pass a (small) current causing it to move.
- >
- >I know that piezos VIBRATE when they get an AC current, but if you gave it
- >a DC current, would it "grow" (or "shrink") in size (and stay there)?
- >
- >If anybody has information on this or knows where (or from whom) I can get
- >such information, I'd really appreciate it.
- >
- I don't know if you can do this with piezos, I don't think it would be very
- easy, but they can do it with metals. What I've seen are referred to as
- biometal, and it is exactly what you described. This is an alloy that was
- drawn into thin wire, but it can be stretched signifigantly. When it is
- heated, possibly by a current passing through it, it returns to its original
- length.
-
- The only supplier I know of for these is Mondo-tronics. They refer to them
- as Muscle Wires and sent me a 2-page flyer on them about a year ago. I've
- never ordered any as they cost quite a bit. Anyway, I'd bet they would send
- you this info if you call them.
- Mondo-tronics
- 2476 Verna Court
- San Leandro, CA 94577
- Phone: 800-374-5764
-
- Have fun,
-
- Tom Erb,
- tome@cs.umr.edu
-
-
- San Leandro, CA
-
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