Figure 6.

Schematic representation of electrospinning (a) a porous, flat and (b) a porous, microstructured membrane. (a) A polymer solution is charged with a high voltage. Thin fibres are spun from the polymer solution, which are attracted to a substrate where they are collected. Adapted from Wallace et al. [97]. (b) (i) A microstructured silicon wafer mould. (ii) Fibres are electrospun on top of the mould. (iii) The mould is removed, and a microstructured mesh of polymer fibres remains. (Online version in colour.)