Microelectromechanical Systems (MEMS) is one of the three core enabling technologies within the Microsystems Technology Office (MTO) of the Defense Advanced Research Projects Agency (DARPA).
this "Chip-Scale Atomic Clock" got my atention but they only talk about "atomic-resolution data storage" and that's a whole different thing.
and btw does anyone know if it's possible to put an atomic clock into just one chip? if it is possible could someone tell how it works