Laser-induced forward transfer of conductive nanoinks

Abstract

Laser-induced forward transfer (LIFT) is a noozle-free technique for printing materials presenting some advantages with respect to inkjet printing. LIFT of conductive nanoinks of high viscosity and particle content is explored in this work. The morphology and characteristics of the deposited material at different laser pulse repetition rates are analyzed. The improvement of electrical properties when applying several layers to the deposited material is studied, managing to obtain Rs = 3.5 mΩ/ when applying two layers. The gap dependence on the features of deposited material is investigated as well. Finally, as a proof of concept to develop electronic devices through LIFT of high viscosity inks, a resistance temperature detector is developed and characterized