Fig. 6.

Negative charge density distributions inside the cylindrical oil droplets in the x-z plane. a − 1.984 e/nm². b − 0.992 e/nm². c − 0.1984 e/nm². d 0.0 e/nm². e 0.1984 e/nm². f 0.992 e/nm². g 1.984 e/nm². h 3.968 e/nm². i 5.952 e/nm². j 7.936 e/nm²