Figure 7.

Local electric field inside the nanopore at a (a) high volume flux ($J_v=6\times {10}^{-4}\mathrm{m}/\mathrm{s}$), (b) middle volume flux ($J_v=3\times {10}^{-4}\mathrm{m}/\mathrm{s}$) and (c) low volume flux ($J_v=0.6\times {10}^{-4}\mathrm{m}/\mathrm{s}$).