US Patent 7955559 - CNT nanoelectronic electrochemical testing

http://www.freepatentsonline.com/7955559.html

This patent from Nanomix teaches one method using carbon nanotubes for detecting and measuring blood glucose for the diagnosis of diabetes. Claim 1 reads:

1. A method of immobilizing a biomolecule for sensing a target species on a substrate to fabricate a nanosensor device for sensing the target species, said method comprising:

providing a plurality of carbon nanotubes and a quantity of a biomolecule configured to interact with the target species in an aqueous solution;

dispersing the plurality of nanotubes and at least some of the quantity of the biomolecule to thereby create a stable suspension of nanotubes and biomolecules in the aqueous solution;

providing a substrate surface having an electrode surface thereon; and

simultaneously depositing nanotubes and biomolecules from the stable suspension to at least the electrode surface to thereby immobilize the biomolecules on the substrate.