Fig. 1: Fabrication process and physical images of 3D-BMN and 3D-BHMN.
From: 3D-printed barbed microneedle electrodes for biosensing and drug delivery in wound management
a SEM images of a honeybee stinger, showing the distinct barbed morphology. b Schematic illustration of the operation principle of 3D-BMN. c i Design schematics of 3D-BMN for sensing. ii Design schematics of 3D-BHMN for drug delivery. d i Fabrication of the 3D-BMN resin matrix via PμSL technology. ii Conductivization process of 3D-BMN through Ag/AgCl spray coating and AuNP deposition. e i Optical images of 3D-BMN before and after conductivization. ii Optical images of 3D-BHMN. f Optical microscopy images of barbed microneedles, demonstrating their morphological characteristics
