title: Spatially modulated laser pulses for printing electronics.
abstract: The use of a digital micromirror device (DMD) in laser-induced forward transfer (LIFT) is reviewed. Combining this technique with high-viscosity donor ink (silver nanopaste) results in laser-printed features that are highly congruent in shape and size to the incident laser beam spatial profile. The DMD empowers LIFT to become a highly parallel, rapidly reconfigurable direct-write technology. By adapting half-toning techniques to the DMD bitmap image, the laser transfer threshold fluence for 10 μm features can be reduced using an edge-enhanced beam profile. The integration of LIFT with this beam-shaping technique allows the printing of complex large-area patterns with a single laser pulse.
authors.forename: Raymond C Y
authors.initials: RC
authors.lastname: Auyeung
authors.forename: Heungsoo
authors.initials: H
authors.lastname: Kim
authors.forename: Scott
authors.initials: S
authors.lastname: Mathews
authors.forename: Alberto
authors.initials: A
authors.lastname: Piqué