RE: metallic polymers

From: Makai Smith (
Date: Fri Oct 17 2003 - 00:03:46 EEST


True. Are there examples of the accumulative us of MEMS to produce large scale effects or motion...oh, wait. Inkjet, rather, fluidjet heads are really MEMS (which zcorp uses to make RP). <:-)

What else, what about things that really move thier butts around via MEMS?

Still, to the point. I am asking the question from the other scale end, and with regard to a particular new(ish) material. For me, not the really-small but the large-from-the-small. Also, the processing advantages of plastic are SO attractive to rapid or layered manufacturing, whereas crystal etching seems too specialized to put in the RP realm.

Anyway, IANAEngineer, so take my comments as that of an enthusiastic amateur, not a professional!


-----Original Message-----
From: Sean Wise []
Sent: Thursday, October 16, 2003 4:25 PM
To: Makai Smith
Subject: RE: metallic polymers [no disclaimers]


What you are talking about is being done, using layered manufacturing to make micromotors and such. It's just not called RP, its called MEMS for Micro-Electro-Mechanical Systems. I've papers where people are making things out of silicon and others using plastics, masking and electroplating. Seach google under MEMS and I'm sure you'll find some info.

Sean Wise
RePliForm Inc.
1583 Sulphur Spring Road, Suite 126
Baltimore, MD 21227
Phone 410 242-5110
Fax 530 325-4768
email: <>
URL: <>

-----Original Message-----
From: []On
Behalf Of Makai Smith
Sent: Thursday, October 16, 2003 2:56 PM
Subject: RE: metallic polymers [no disclaimers]

Hmm *wrinkles brow* the exploitation of electromagnetic effects?
Transduction, vibratory, thermal? The accumulation of small effects.
Bubblejets versus piezography? Fluid propulsion, hydraulic.
Maybe even direct electroactive motion? Muscles.

My customers won't want to fab their own robot at home...
unless it can walk around to fetch them a beer ;)

Is there research using metallic polymers for motors or some such conventional propulsion? I can imagine a weight savings and there must be some other material property benefits to exploit.


-----Original Message-----
From: Marshall Burns []
Sent: Thursday, October 16, 2003 11:12 AM
To: Makai Smith;
Subject: RE: metallic polymers


        Yes, this work has very interesting ramifications for digital
fabrication. Dupont is not directly addressing that application
immediately, but other people are. There is a project at MIT, for
example, that is working on printing electronic circuits directly into

        I'm curious about your suggestion of making propulsion
components this way. Could you explain what you're thinking about?

Marshall Burns

> -----Original Message-----
> From:
> [] On Behalf Of Makai Smith
> Sent: Wednesday, October 15, 2003 11:16
> To:
> Subject: metallic polymers
> Hello RP-ML,
> Last week I saw a presentation by Alan Heeger who won a Nobel
> prize developments in metallic polymers. DuPont then bought
> his work to boost their displays division. Much excitement
> has surrounded their application to produce OLED's, as thin
> film displays and photocells. The thing that struck me is
> that they are printable fluids. THEY'RE INKS! ...uh, RP uses
> printing processes, so...I can only speculate, someone help
> me out here...
> Are there developments toward using metallic polymers for RP?
> Is this the crucial step toward functional differentiation
> within parts (to allow printing logic and propulsion
> components?) This is exciting, right?
> |\/| /\ |< /\ |
> ________________

This archive was generated by hypermail 2.1.7 : Sat Jan 17 2004 - 15:18:13 EET