The world can’t stop talking about the chip, but the thrill is in the toppings. The toppings are the atomic-sized transistors, the fragments of supercharged pimentos and capers that, when carved, layered, and latticed into a semiconductive nano-universe, give a microchip its fathomless virtuosity. By contrast, the chip is just a crisp, visible morsel carved out of a silicon wafer.
Admittedly, not just any silicon. Silicon wafers are the flattest objects in the world. The circular disks, between 6 inches and a foot in diameter, are shiny flat frisbees, half a millimeter thick, shimmering with rainbows like wide-stretched soapbubbles. Semiconductor fabrication plants, or fabs, are known by the size of the wafers they process into chips. The bigger the wafer, the bigger the haul, so companies such as Taiwan Semiconductor…
