Fig. 3.

(a) Macrophotographs detailing the steps involved in the fabrication of highly porous MEW PCL meshes with well-controlled 3D architecture and infusion with GelMA+AMP using a custom-made mold. (b-e) Representative cross-section SEM micrograph of the GelMA-PCL (GP) membrane showing the hydrogel phase uniformly infiltrated into the pores of the polymer mesh. (f) FTIR spectra showing the functional groups related to phosphate around 1079 cm⁻¹ in GelMA+AMP along with typical amide band which is observed in GelMA at 1679 cm⁻¹ confirming the incorporation of AMP. (∗, † and ∏ denote AMP-, GelMA- and PCL-related peaks, respectively).