Figure 5From: Tailoring the grooved texture of electrospun polystyrene nanofibers by controlling the solvent system and relative humiditySEM pictures of grooved nanofibers electrospun from 10% PS solution. (A, B) Grooved nanofibers and (C) cross section. THF/DMF ratio 1:1 v/v, RH 40%, collecting distance 15 cm, feeding rate 1.5 ml/h, and applied voltage 12 kV.Back to article page