ABSTRACT
Carbon nanotubes (CNTs) were Šrst discovered by Sumio Iijima of NEC in 1991.[1] They consist of sheets of carbon atoms connected in a honeycomb-like pattern and rolled into tiny cylinders. Single-walled carbon nanotubes (SWNTs) consist of one graphene layer, and most have a diameter of approximately 1 nm, while their length can range from several hundred nanometers to microns. Multi-walled carbon nanotubes (MWNTs) are comprised of 10-50 concentric tubes with an average interlayer distance of approximately 3.4 nm (Figure 8.1).
