Assembly of Oriented Ultrafine Polymer Fibers by Centrifugal Electrospinning

Figure 6

Optical microscope images of PMMA fibers electrospun at conditions of 420 rpm and 2.0 cm with applied voltage of (a) 4.5 kV, (b) 6.0 kV, and (c) 7.0 kV.

(a)

(b)

(c)