"The gate, a chip component that switches transistors on and off, is a critical measure of transistor size. Previous research had already pushed gate lengths to one nanometer and below. By scaling gate lengths down to the size of single atoms, the latest work sets a new mark that'll be hard to beat. "In the future, it will be almost impossible for people to make a gate length smaller than 0.34 nm," the paper's senior author Tian-Ling Ren told IEEE Spectrum. "This could be the last node for Moore's Law.""
"Transistors use grooves etched in silicon to guide electrons around the chip. The channels do a similar job to that of wires, but on a much smaller scale. Making these grooves just 7nm wide means you can fit more transistors on the chips.
For comparison a strand of human hair, at 100,000nm thick, is about 10,000 times wider than the channel. A red blood cell is a thousand times bigger, at 7,500nm in diameter. A strand of DNA is in the same order of magnitude, but slightly smaller at just 2.5nm wide."
"The turning point happened in 2005, when the transistors, while continuing to double in numbers, were neither faster nor more energy-efficient at the same rates as before."
"Moore's Law (or the exponential growth of integrated circuits) is actually referring to the fifth paradigm of computation. Here's the list of the underlying technologies: (1) Electromechanical; (2) Vacuum Tube; (3) Relay; (4) Transistors; and (5) Integrated Circuits.
Quantum computers may well be the sixth paradigm, given that they work in a fashion that is entirely different from "classical" computers"