Carbon Nanotubes and Graphene - Research and Applications

Researchers have employed single-walled carbon nanotubes for the detection of biomolecules like Streptavidin or IgG. Two types of sensing mechanisms have been applied: one is monitoring the changes in electrical conductance caused by the molecules attached to the walls of nanotubes, and the other was the quantitative determination of biomolecule uptake of the matrix. The immobilization of the molecules on the nanotube surface was investigated by atomic force microscopy (AFM).