Electrostatically Driven Vertical Combinatorial Patterning of Colloidal Nano-Objects

The hierarchically directed assembly of multiple types colloidal nano-objects on surfaces is interest for developing disruptive applications combining their original properties. We propose herein a versatile, electrostatically driven strategy to arrange various kinds colloids vertically in the shape 3D micropatterns by nanoxerography. made proof concept this vertical combinatorial nano-object patterning using two photoluminescent CdSe(S)/CdZnS core/shell nanoplatelets emitting red and green wavelengths as model nanoparticles. key experimental parameters were investigated tune thickness each independent level within stack. finally applied such make dual-colored nanoplatelet patterns. Interestingly, we proved numerically that relatively high index responsible partially emissions observed photoluminescence experiments.