*2.5. Electrospinning*

Nanodimensional high specific surface area devices can be fabricated with bioactive loaded polymer through the electrospinning technique [63]. In a conventional electrospinning system, generally comprising of a high-voltage power supply, syringe, pump and a collector, polymeric nanofibers, inorganic nanofibers, and composite nanofibers are ejected into a sequence of droplets forming steady fiber [64,65].

## *2.6. Stereolithography and Digital Light Processing*

Stereolithographic (SLA) and Digital Light Processing 3DP allow the layer by layer realization of 3D mesoporous stuff by cross-linking photo-sensitive materials using laser light or digital light projection technique, respectively [66]. The curing stereolithographic step, both in single-photon and two-photon polymerization, is actuated by tuning the incidence, the intensity, and the duration of near-infrared, visible or UV light.
