Hello. I would appreciate any response, opinion on the following.
I have to measure current between to electrodes made of thin metal foils. T he current is in Femtoampere range (~ 100 fA). The problem I am having is i n making electrical contacts on thin metal surfaces, they are aroun 0.5mm t o 1mm surfaces and tried using thin (0.15mm) Copper wire, but it was very n oisy.
Does anyone know of techniques of making such delicate contacts? (Please no te that any destructive treatment is allowed on the metal, so, welding/ sol dering all are invalid options, I tried using conductive glue but that also has a lot of noise)..
Thanks a lot :)