Methods and apparatus for forming devices using nanotubes. In one embodiment, an apparatus for depositing nanotubes onto a workpiece comprises a vessel configured to contain a deposition fluid having a plurality of nanotubes including first nanotubes having a first characteristic and second nanotubes...http://www.google.de/patents/US7799196?utm_source=gb-gplus-sharePatent US7799196 - Methods and apparatus for sorting and/or depositing nanotubes
