This work is devoted to present developments of metallic triangular nano/micropatterns arrays based on self-assembly of closely packed colloidal polystyrene microspheres, using a combination of colloidal lithography and Pulsed Laser Deposition (PLD) process. Au and Ir metal triangular structures with thicknesses of 50 - 100 nm, directly fabricated on Al2O3 or embedded in a VO2 matrix have been studied in order to tune the position and intensity of localized surface plasmon resonances (LSPR). The position of the LSPR depends strongly of the size and the shape of the metallic patterns, the spacing between them and the surrounding dielectric environment.