Thread View: sci.materials
2 messages
2 total messages
Started by TJR122
Thu, 12 Nov 1992 22:07
Piezoelectric Materials
Author: TJR122
Date: Thu, 12 Nov 1992 22:07
Date: Thu, 12 Nov 1992 22:07
15 lines
1025 bytes
1025 bytes
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. Thanx! - Tom Rusnock TJR122@PSUVM.PSU.EDU
Re: Piezoelectric Materials
Author: Tom Erb
Date: Fri, 13 Nov 1992 15:16
Date: Fri, 13 Nov 1992 15:16
42 lines
2101 bytes
2101 bytes
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 r w t r
Thread Navigation
This is a paginated view of messages in the thread with full content displayed inline.
Messages are displayed in chronological order, with the original post highlighted in green.
Use pagination controls to navigate through all messages in large threads.
Back to All Threads