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- From: tyadav@athena.mit.edu (T.Y.)
- Subject: Re: What could this be..........?
- Message-ID: <1993Jan3.171433.26924@athena.mit.edu>
- Sender: news@athena.mit.edu (News system)
- Nntp-Posting-Host: m66-070-5.mit.edu
- Organization: Massachusetts Institute of Technology
- Date: Sun, 3 Jan 1993 17:14:33 GMT
- Lines: 34
-
- ===================================================================
- Thanks to everyone who responded. Reading the answers, I guess, I
- have to be more specific. I am working on the flame process of
- making fullerenes. We have flames with fullerene yields exceeding
- 20% by soot basis (Read latest special fullerene issue of _Carbon_).
- I now have this urge to play with effect of fields on the product
- structure/distribution. With this background, here are more
- constraints for the material I am looking for:
- >==========================
- >
- > Are there materials,
- > that are insulators at room temperature,
- > and conductors at high temperatures?
- > AND can remain intact and conductive at peak temperatures of 3800 F (2200 C)?
- > Could electric field be suspended in space with electrodes of this material?
- >
- > If you know something, just press R. (or F, if you prefer).
-
- The environment is a hydrocarbon/oxygen flame. So the material has
- to be resistant to oxidizing environment.
- Assume that I can machine (or play some deposition games) the material
- into electrodes of desirable shape. This electrode would be in/near the
- oxidizing environment. Not only should the electrode not react, the electrode
- should not be a heat sink - to avoid thermal modification of reaction.
- So to keep life interesting, the attempt would be to pass enuf current
- to keep the electrode as an ohmic heat source.....
- Such a polite interference should help keep the reaction path uniquely
- affected by the field.
-
- So, now, make your guess... :)
-
- T.Y.
- ----
- tyadav@athena.mit.edu
-