Electrospinning is a fiber-forming process capable of producing continuous nanoscale-diameter fibers using electrostatic forces. The combination of high specific surface area, flexibility, and superior directional strength makes fiber a preferred material for many applications, ranging from clothing to reinforcements for aerospace structures. Although the effect of fiber diameter on the performance and processability of fibrous structures has long been recognized, the practical generation of nanoscale fibers was not realized until the rediscovery and popularization of electrospinning technology by D. Reneker in the 1990s.