Figure 1From: Carbon nanotubes: properties, synthesis, purification, and medical applicationsSchematic structure and TEM images of SWCNT and MWCNT. (A) Schematic structure of SWCNT and (B) MWCNT. The transmission electron microscope (TEM) images of a (C) SWCNT and (D) MWCNT [6–8].Back to article page