It's not like one can just pop these micromachines into a board. MEMS need to be incorporated into the environment in which they are to do work. Such environments could be a petri dish, a human brain, or a tunneling electron microscope. However, as with most technologies, given the time, the money and the people, such problems can be overcome. These projections are due to the potential that these components have on impacting the commercial and the defense markets.
Many applications already exist and many more are just being discovered.
The basic technology for making micromachines already exists, so it's just a matter of time before these microdevices are injected into every aspect of our lives. Microsoft Internet Explorer. 1996. Solid State Technology . Scientific America . Solid State Technology ., September 1997.