[3dem] Powdered carbon fiber (summary)
Terje Dokland
dokland at uab.edu
Tue Sep 14 07:17:03 PDT 2010
Thanks to all for helpful advice regarding the powdered carbon fiber
sample, which has helped alleviate my concerns. To summarize:
1. Most people don't think carbon powder would be a major problem
(it's essentially the same material as carbon film is made from
anyway). And conversely, materials scence people are more concerned
about biological samples :)
2. One suggestion was to suspend the carbon in a solvent like hexane
and apply to the (glow-discharged) grid, followed by blotting and
drying. That would seem to ensure that whatever is left is then
adsorbed to the grid.
3. Observing at low temperature should alleviate any outgassing of
the sample.
4. Use a sandwich grid, if necessary. (In light of other comments, it
sounds like this won't be necessary)
Thanks again!
terje
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