[HandyDandy]

The stuff is an isolator and a conductor. That’s odd.

[Paladin2]

NOT an Insulator.

[Red Badger]

Here’s what I think is happening:

Copper exhibits what is called ‘skin effect’ at high frequencies, where the primary conduction of the signal is along the outer layer of the conductor.

The Graphene is coating the outer layer of the copper so it enhances the conduction of the copper wire’s skin effect, by Ohm’s Law, where two conductors in parallel will have a lower resistance that either one of them singularly.

This would in effect be electrically shortening the paths so the signals could be of higher frequency than with copper coated with tantalum nitride ..............

[tacticalogic]

The stuff is an isolator and a conductor. That’s odd.

I read about some research IBM was doing using a thin layer of diamond as the chip substrate. Seems diamond has the rather unique properties of being simultaneously an electrical insulator and a heat conductor.

[AZLiberty]

A physical isolator, not an electrical insulator. It prevents the migration of copper atoms from the wires into the silicon substrate, where it would contaminate the silicon and render it dysfunctional.