SWCNT single-walled carbon individualized

An additional factor which may modify the lung toxicity and corresponding risk following exposures to engineered nanoparticulates is the electrostatic attraction/aggregation or agglomeration potential of some nanoscale materials, such as single wall carbon nanotubes (SWCNT). The dimensions of individual SWCNTs have been reported as Inm (diameter... 

Carbon Nanotubes (CNTs), the third allotrope of carbon next to diamond and graphite, were discovered in 1991. Since then, their exceptional properties, such as extremely high tensile strengths (150-180 GPa) and modulus (640 GPa to 1 TPa), "ballistic thermal conduction (>3000 W/mK for individual tubes) and exceptional electrical conductivity, have been unveiled. These properties are directly attributed to their unique structure. CNTs are long cylinders of covalently bonded carbon atoms, which look somewhat like graphene sheets that have been rolled-up into seamless tubes. The tube ends may be capped by hemi-fullerenes. Single-walled carbon nanotubes (SWCNTs) comprise only one such cylinder, while multi-walled carbon nanotubes (MWCNTs) contain a set of coaxial cylinders, see Figure 1.3. 

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