Fig. 4From: Electrospinning onto Insulating Substrates by Controlling Surface Wettability and HumiditySEM images of electrospun fiber under different conditions with a tip-to-electrode distance of 8 cm and applying 12 kV DC voltage. a, d Conventional electrospinning—metal electrode without local humidity control. b, e Metal electrode with local humidity control. c, f Hydrophilic surface polymer substrate with local humidity controlBack to article page