Companies that claimed to be doing &quot;nanotechnology&quot; in 2005 or 2015 are basically fraudulent.  &quot;Nanotechnology&quot; is a well-defined term: it means, as kanzure said, &quot;positional, precise molecular manufacturing.&quot;  Unfortunately, lots of gold-digging hucksters jumped on the term to tout anything involving small particles, extending the term to the point where it could plausibly be used to describe the process of smoking meat.