Needleless electrospinning process with rotating spinneret can be summarized as that, the
rotation of spinneret loads a thin layer of polymer solution onto the spinneret surface. The
rotation and perturbance create conical spikes on the surface of this solution layer. When a
high voltage is applied to the spinneret, these spikes tend to concentrate charges and
amplify the perturbance and the fluid around the spikes is drawn to these spikes under high
electric force. Taylor cones are thus formed. Fine solution jets are then ejected from the tips
of these Taylor cones, when the electric force is large enough.