Sunday, December 06, 2009

US Patent 7625702 - Helical wrapping of CNTs by genomic DNA

DNA wrapping of carbon nanotubes has previously been used to facilitate sorting and dispersion of the nanotubes. However, early methods have been limited by the requirement for repeated base sequences in the DNA. This patent from IBM teaches a DNA wrapping method which avoids this problem. Claim 1 reads:

1. A method, comprising:

helically wrapping single-stranded lambda DNA segments around a single-wall carbon nanotube to form single-stranded DNA segment/single-wall carbon nanotube complex, each single-stranded DNA segment of said single-stranded DNA segments having a length of between about 3,000 and about 50,000 bases.