Figure 1.
shows (a) the morphologic by SEM and (b) structure by HRTEM of typical as deposited MWCNTs. Scale bars are indicated, the outer diameter is ca. 200 nm and length > 1500 nm for the MWCNT show in (a). Multi-walled structures are presented in (b) corresponding to a MWCNT with outer diameter of ca. 20 nm.