652438.fig.0017a
(a)
652438.fig.0017b
(b)
652438.fig.0017c
(c)
652438.fig.0017d
(d)
Figure 17: The resistance values of the specimens and their standard deviations versus sonication time. (a, b) Single-walled carbon nanotubes, (c, d) multiwalled carbon nanotubes [17].