Ferromagnetic shadow mask for spray coating of polymer patterns

摘要

We present the fabrication of a wafer-scale shadow mask with arrays of circular holes with diameters of 150-400 μm. Standard UV photolithography is used to define 700 μm thick SU-8 structures followed by electroplating of nickel and etching of the template. The ferromagnetic properties of the shadow mask allow magnetic clamping to the substrate and spray coating of well defined polymer patterns.