An automatic procedure such as electrospinning was also reported using a high voltage electrical charge to draw a seed from a syringe containing a ZIF's seed solution. In the electrospinning procedure, droplets on the capillary tip can be formed by inducing a surface charge on the solution by the applied potential. The electrostatic forces of the charged droplet overcome the surface tension of the solution producing charged jets of the solution into a substrate. The solvent of the deposited droplet undergoes rapid evaporation producing ZIFs crystals on the substrates. The electrospinning method was used to create ZIF-8 crystals from a polyvinyl pyrrolidone (PVP) solution containing seed crystals, followed by a solvothermal procedure on the SiO2 substrate .