In reply to Jed Rothwell's message of Wed, 09 Sep 2009 09:23:11 -0400: Hi, [snip] >A chip outside the cell, as I said. This is a crucial issue. Another >difficulty is ensuring that you etch both the control and the sample >with the same procedures and concentration of etchant. The >concentration changes over time as you use the stuff.
Surely both control and sample can be etched concurrently in the same solution? That would remove any difference in processing. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/Project.html
