 The cross-sectional geometry of the syringe housing will determine the final structure of the buckypaper and the amount of carbon nanotubes added to the column will affect the height of the carbon nanotube mat.Although there is currently no formal classification for paper, discs and columns, it was deemed necessary to differentiate between the different structures obtained for research purposes.Typically, cylindrical columns are used with a few milligrams of carbon nanotubes in a solvent.