The fabrication process consisted of the preparation of a mold of
a microneedle roller (process I) and the replication of polymer by
micromolding (process II), as shown in Fig. 1. Process I involved
steps for preparation of a PDMS female mold with microneedle
cavities and a base structure by inclined rotational UV lithography
and micromolding of PDMS. Process II produced a replica of microneedles
by micromolding PLA (II-h process) and solvent casting
CMC (II-i process) from the mold prepared by process I.