Moore's Law on Wikipedia - http://en.wikipedia.org/wiki/Moore's_law
Moore's Law roughly states that every 18 months the number of transistors on a dense integrated circuit (IC) will double. Astoundingly, this prediction has held true since was postulated by Gorden Moore in a paper he wrote in 1965.
Will Moore's Law Last?
Some googling revealed these relevant articles:
http://www.engadget.com/2015/09/28/first-nano-photonic-memory-chip/
http://www.techradar.com/us/news/computing/moore-s-law-how-long-will-it-last--1226772
http://www.extremetech.com/computing/97469-is-14nm-the-end-of-the-road-for-silicon-lithography
