Current images obtained on an amorphous (c) and polycrystalline (d) sample where previously, four RVS where applied to induce BD. The voltage applied during the scan was, in both cases, -8.6 V. (a, b) correspond to typical I-V curves measured on those positions. The maximum current and area of the BD spots can be found in the table.
Lanza et al. Nanoscale Research Letters 2011 6:108 doi:10.1186/1556-276X-6-108