To induce covalent crosslinking through μCP, we use 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-Hydroxysuccinimide (EDC/NHS) along with the biomolecule of interest in the bioink formulation. The bioink was first applied on the PDMS stamps in the form of 5μL droplets. The droplets were incubated on the stamp's square pillar features, allowing bioink to get absorbed into the material of each feature (Figure ). After incubation, removal of excess volume and subsequent air drying was conducted, allowing for evaporation of the bioink (Figure ). The elastomeric stamp was then placed onto the functionalized PMMA substrate. Force was applied onto the stamp for physical transfer of the bioink from the stamp features onto the substrate, facilitating biomolecule immobilization.