Is it really LEDs? (Score 2)

After reading both the Nature and BBC articles, I'm not sure that they are really talking about opto-electonics, although it might be used for such.

Instead I think they may be using this to emit the energy loss of silicon circuits in the visible spectrum, rather than IR.

As we all probably know, today's CPU's run extremely hot, just look at all the comments about the new Apple titanium notebook. Getting rid of this excess as light instead would be an immense benefit. And would mean small faster CPU's without the need for a cyrogenic cooling system.