It's only a matter of time before microchip production as we know it disappears entirely, at least for leading-edge tech designs. Either via new materials applied to trusted techniques (such as carbon coating/nanotubes) or entirely new and exotic fabrication technologies, we're rapidly approaching the limits of traditional silicon-based microchips. One solution to the problem, as it stands, might be found in spintronics - an interesting concept which bases processing and data retention not simply on whether current is being applied to a given transistor (as is the case for current silicon chips), but on a property of electrons called spin. Crucially, changing the magnetic orientation of electrons requires but a single charge, instead of a continued supply of power - which allows for much lower power consumption and heat output, two of the encroaching, limiting factors for the usual chips.