On the in situ 3D electrostatic directed assembly of CdSe/CdZnS colloidal quantum nanoplatelets towards display applications

•Development of an experimental platform based on a smart resealable microfluidic chip coupled to an inverted optical fluorescence microscope and a high-speed camera to perform in situ monitoring of the assembly of photoluminescent nano-objects on surfaces.•Deciphering the 3D assembly mechanisms of CdSe/CdZnS colloidal quantum nanoplatelets by nanoxerography, coupling experiments with numerical simulations.•Tuning on demand the thickness of CdSe/CdZnS quantum nanoplatelet-based patterns from monolayers to multilayers.•Realization of an array of 3 µmx3 µmx60 nm CdSe/CdZnS quantum nanoplatelets based pixels on a cm2 transparent surface area towards applications in photoemissive displays.