The CBS news has an extensive 4 webpage feature on the technique.
An interesting aspect is that Richard Smalley initially thought that the radiowave to heat up metal nanoparticle technique to cook cancer tumors would not work. Richard's scientific intuition was that this would completely fail. He was converted into being a believer when proven wrong with successful experimentation.
This is relevant since Richard Smalley's intuition was that molecular manufacturing would not work. This does not indicate that molecular manufacturing will be successful, but it does show that Richard's track record for intuition related to a successful or unsuccessful application of nanoscale related technology is not 100% accurate.