Nano doom monger Bill Joy ( or perhaps should that be a molecular nano doom monger as Joy’s main fear was of was tiny robots rather than self cleaning windows) has joined top tier US venture Capital fund Kleiner Perkins Caufield & Byers.
KPCB are somewhat sceptical about investing in nanotech in general. Vinhod Khoslas remarks caused apoplexy among the nano hypers just before the Nanosys IPO, but the scepticism as also reflected in the lack of appetite among institutional investors.
So, sensible business plans focussing on applications, not technology to Kleiner Perkins. The mention of any combination of Drexler/Firesight/Nanobot will get your plan filed for recycling, unread.