508192.fig.004a
(a)
508192.fig.004b
(b)
508192.fig.004c
(c)
508192.fig.004d
(d)
508192.fig.004e
(e)
508192.fig.004f
(f)
508192.fig.004g
(g)
Figure 4: TEM images of the (a) and (b) -MWCNTs, (c) and (d) -MWCNTs, and (e) and (f) -MWCNTs at different magnifications taken at an accelerating voltage of 100 kV. Insets of (b), (d), and (f) are showing higher magnification images. (g) Average MWCNT length ( ) measured from more than 30 MWCNTs in each sample from several TEM images.