i´m doing my fracture cell again improoving it actually with the knowledge i have today about metalization...
i used a graphite piece to metalize the plastics such that it can be used as a dielectric correctly...
i would like to have a biger vaccum chamber such i could do copper or aluminum vapor deposition... this would be the ideal... the idea of using a metalized plastic you dont get air between the electrode and plastic interface so air is not ionized... corona destruction is so prevented,,, although there is some resistance it allow the dielectric constant of the plastic to show correctly since it make a better contact and impeed the air from interfere,,,