Figure 4.

Different electrospinning setups to produce mats of nanofibers: (a) flat plate collector; (b) drum collector rotating at low speed, producing random nanofibers; (c) drum collector rotating at high speed, producing aligned nanofibers; (d) gap collector; (e) liquid bath collector; (f) flat plate collector with a grid pattern on the surface; (g) mixing electrospinning or co-electrospinning setup ((I) two syringes electrospin synchronously the solutions on a flat plate collector; and (II) section of the mat with the two different nanofibers mixed together; and (h) multilayering electrospinning setup ((I) one solution electrospins on a flat plate collector producing a random mat; (II) a second solution electrospins the previous random mat; and (III) section of the final mat shows two different layers of nanofibers overlapped).