[3dem] carbon rods for evaporation
Svetomir B Tzokov
s.b.tzokov at sheffield.ac.uk
Mon Mar 4 05:48:26 PST 2013
Hi Kelly,
We have good results with the Precision Machined Carbon Rods (50/60Hz)
85001 from Cressington.
http://www.cressington.com/consume.html
Not sure if you could use them on your carbon evaporator, but try them if
you can.
Kind regards,
Svet
On Fri, 01 Mar 2013 19:22:21 -0000, Kelly Dryden <kdryden at virginia.edu>
wrote:
> Hi all,
>
> Since Edwards no longer makes them, we have a Ladd carbon evaporator.
> However, we are having trouble getting the carbon to vaporize. The rods
> a slightly thinner than we used previously with an Edwards, and vacuum
> reaches about 2E-6. The problem is that I can only get a very thin
> layer of carbon after 12-15 times of increasing the current nearly to
> the maximum. I can't leave it on for too long each time because either
> the rod will blow, or the apparatus gets so hot the plastic film is
> damaged. All the carbon rods we have tried (the originals from Ladd,
> and from Ted Pella and EMS) appear to be graphite. I've been unable to
> determine if this has always been true, or if it is creating the problem.
>
> Any suggestions for helping us get fine-grained carbon coating for our
> grids will be welcome.
>
> Thanks,
> Kelly
>
>
> *********************************************************
> Kelly A. Dryden, Ph.D.
> Assistant Professor of Research
>
> Dept. of Molecular Physiology & Biological Physics
> School of Medicine, University of Virginia
> Snyder Bldg., Rm. 232
> 480 Ray C. Hunt Dr.
> Charlottesville, VA 22908-0886
>
> office: (434)982-0525 fax: (434)243-8271
> email: kdryden at virginia.edu
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--
Svetomir B Tzokov
Electron Microscopy Facility Manager
Krebs Institute for Biomolecular Research
Dept Molecular Biology and Biotechnology
The University of Sheffield
Firth Court, Western Bank
Sheffield S10 2TN
United Kingdom
Tel: +44 (0)114 222 4674
Fax: +44 (0)114 222 4243
Mob: +44 (0)7905 832358
Email: s.b.tzokov at sheffield.ac.uk
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