Graphene nanotubes, or single wall carbon nanotubes, are graphene sheets rolled into a tube. Their unique physical properties make them a universal additive that can be used in 70% of all base materials to improve their specific properties.
Despite the similarity in their names, single wall and multi wall carbon nanotubes differ in their properties and in the effects they have on materials, just like graphene (a single layer of carbon atoms) differs from graphite (multiple layers of carbon atoms).