[r2]

Silicon never ceases to amaze me. While much of the research in solid state physics these days is around novel materials like graphene, silicon continues to dominate solid-state applications including all conventional computer processors and most solar cells and will prove incredibly hard to unseat in these areas. Now it appears to be a leading contender for quantum computing platforms. It's an earth-abundant material with billions of research dollars poured into it to support computing, so seeing progress in silicon quantum computing means real hope for applications.

[Osmium]

Yes, very true, but this is in part because silicon is simply understood so well now. Trust me when I say we could do just as exciting things and more besides with other materials if we just understood them half as well!

To illustrate what I mean, consider the fact that the Czochralski process [1] exists and that it means you can get huge, pure, relatively defect-free ingots of silicon (see [2]). With new materials, we're happy just to grow a few microns of the stuff, let alone something like that.

So you're right, silicon really is very incredible :) but we've reached the point now that the new innovations are in part possible by sheer momentum alone, like the billions of dollars of investment you mention. The big challenge is to develop new materials that initially (possibly for decades or more) are inferior to silicon but might ultimately unseat it. The only problem is that no one really knows what that material will be in advance. A lot of people right now are gambling on graphene, and from the amount of investment alone something interesting should come from it, but who knows if there's something else better out there just waiting for the attention it needs.

[1] http://en.wikipedia.org/wiki/Czochralski_process [2] http://en.wikipedia.org/wiki/File:Monokristalines_Silizium_f...

[alokv28]

Not that I disagree with what you wrote, I just want to point out that silicon dioxide is probably the most important reason silicon has reached such ubiquity in electronics. No other material has a native oxide as good as SiO2, even though the semiconductors themselves have superior properties than silicon.

[chid]

The interface isn't good though.

[levlandau]

the interface is not too shabby

[chid]

That process gets you elementally pure silicon, but not isotopically pure as in this paper.