Table 1.

Values for the physical properties of the liquid and the semiconductor (ZnO) sphere in Figure 2. Values for ZnO are within the range reported in [39].

—	${\mathit{\lambda }}_{\mathit{D}}$	$\mathit{\sigma }$	$\mathit{\epsilon }/{\mathit{\epsilon }}_0$
Semiconductor (ZnO)	30 nm	480 mS/m	3.9
Electrolyte (KCl in water)	30 nm	1.5 mS/m	80