My Techs are saying that the size of the USB drive is going to be a little larger than the average . As for keeping the USB cool the design will include Rare metals for casing. that's all i can say for now due to disclosure issues
Well you have silver and then you have copper, and that's about it. Also maximum amperage for a USB port is about 1.8 amp, so I'm not sure what you're doing that requires something "exotic". I am curious how you're going to incorporate 1500 megs of RAM onto a USB stick, especially since that much GDDR5 or something similar will use most of the USB port's power.
I'm just curious, are you paying "your" "techs" in advance?
It's a super-conductive case, it's no big secret. You should probably add to you post "liquid helium not included".