Tokyo's Orbray and De Beers' Element Six have established a reproducible process for one of the largest single-crystal diamond wafers yet, at three inches. How a sapphire trick beat the cracking problem that long held back diamond, the material many call the ultimate semiconductor.
Terahertz promises jaw-dropping 6G speeds, yet a passing body can kill the link. NICT just demonstrated the world's first system that auto-switches between millimeter and terahertz waves. The real breakthrough isn't a speed record but knowing when to give up on speed.
