NIce find Hawk! Check out the video in this one. The electronic control feature he discusses in huge imo.

Diamondoids on Verge of Key Application Breakthroughs

http://spectrum.ieee.org/nanoclast/semiconduc...akthroughs

I would go way back to the beginning and say you could build a very compact solar furnace with the correct metamaterial and a ceramic/plasma containment vessel.

Just spit balling at the end of another work day.