LAUSR

Abnormal conductivity of electrolytic solutions is observed under an extremely high electrical field, this phenomenon is called the Wien effect. Generally, alternating voltage is applied on the electrodes because it is intractable to produce a direct voltage as high as 100,000 volts. However, extremely high electrical field which is akin to the high alternating electrical field could be generated by several-volt direct voltage if DC voltage is applied on such pore whose thickness is approaching nanoscale. Through our experiment increasing conductivity of electrolytic solutions is observed when increasing the DC voltage over 2 volts. Additionally, we propose some hypothesis to account for the result. We speculate the mode of ionic transport will convert to a novel mode under very high electrical field. Our findings demonstrate that DC voltage could produce similar phenomenon to the Wien effect, and could help to explore the property of ionic transport under extreme conditions.