Fig. 5From: Electrospinning onto Insulating Substrates by Controlling Surface Wettability and HumidityImages of PU electrospun fiber on polymer substrate with hydrophilic (right) and hydrophobic (left) surface according to applied DC voltage for 2 min. a 6 kV. b 8 kV. c 10 kV. d 12 kV. e 14 kV. f 16 kV (scale bar: 10 mm)Back to article page