Mesoporous Silica NPs (MSN) were also synthesized on the SDL, as they are a versatile nanomaterial with many applications due to their tunable porous structure that enables loading of ions or other compounds and their subsequent release in a controlled manner. Three syntheses were performed as described in the experimental section in parallel to yield three batches (MSN1, MSN2, MSN3), which were then analyzed for reproducibility. DLS measurements as represented in Figure yield size distributions which are monodispersed and consistent across the batches.