Re:RepRap printed circuits
by mukaiji on Tuesday May 29, 2012 @12:41AM
(#4035996)
Or if you've got $50K to spare, checkout the Dimatix material deposition printers. I spent 2 years on one in a printed electronic lab at Stanford. You'll need access to a chem lab to get research-grade printable & conductive polymers :)
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Re:RepRap printed circuits
by NonEUCitizen on Tuesday May 29, 2012 @05:05AM
(#4036601)
How conductive are conductive polymers?
From Wikipedia (http://en.wikipedia.org/wiki/Conductive_polymer#History), reference markers removed:
In 1963 Australians Bolto, DE Weiss, and coworkers reported iodine-doped oxidized polypyrrole blacks with resistivities as low as 1 ohm·cm. This Australian group eventually claimed to reach resistivities as low as 0.03 ohm·cm with other conductive organic polymers. This resistivity is roughly equivalent to present-day efforts.
not very conductive. You can used various PeDOT polymers inks but you're best best is usually to go with metallic nanoparticles. Those aren't too great because they limit the number of substrates you can use due to required post-deposition processing (annealing mostly, to make them conductive). We also managed to print nanowires and carbon nanotubes. Those are extremely conductive and require little post-processing. In fact, we did most of our work on paper substrates.