Figure 4
a Typical TEM image of polyaniline nanotubes andb the correspondingI–V characteristics with fitting curves to Eq. 3from 250 down to 3 K
Figure 4 | Nanoscale Research Letters
a Typical TEM image of polyaniline nanotubes andb the correspondingI–V characteristics with fitting curves to Eq. 3from 250 down to 3 K