Since 1959 when Robert Noyce and Jack kilby invented the first IC that became the first electronic device of our age.
With continued research program-me and updation, it has reached the chip in 32Nano meters. Now that, they are coming out with a new 3D transistor design called Finfet which remarkably small pillar or fin of silicon
and it is expected from Intel HQ Santa Clara California USA, general production later this year.
If this a achieved future Electron switches stacked on top of each other to handle info faster & with less power.