You ought to be keeping an extremely sharp eye on Carbon Nanotubes (CNT’s) because it turns out that CNT’s may replace copper wire in some applications.
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Of course, if you’re into electronics, you caught the bit about transmitting ‘both AM and FM radio signals” which is akin to saying a straw can carry water or milk, but they key thing is that CNT’s are the future. Sorta like the movie Mrs. Robinson where the fellow says “I have one word for you: “Plastics”.