Figure 9From: Tailoring the grooved texture of electrospun polystyrene nanofibers by controlling the solvent system and relative humiditySEM pictures of fibers and their surfaces from 10% ( w / v ) PS solutions (THF/DMF ratio 1:1 v / v ). The solutions were electrospun under the lowest applied voltage. (A) Beaded nanofibers. (B, C) Bead. (D) Nanofiber. RH 60%, collecting distance 15 cm, feeding rate 1.5 ml/h, and applied voltage 5 kV.Back to article page