Nano-ink Drops’ Behavior on the Polymeric Substrates’ Surfaces

The aim of this paper is analysis of the nano-ink behavior onto the polymeric substrates’ surfaces. For this reason, three types of commonly used polymeric substrates for inkjet printing technology, polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and polyimide (PI) were analyzed. The impact of the surfaces’ temperature on the ink spreading was mainly analyzed by using the microscopic methods. The higher temperature of substrate causes the fast evaporation process of the ink onto the substrates surface as well as causes the viscosity decreasing of the nano-ink. For this purpose, 2 silver based nano-inks were deposited by inkjet printer Jetlab 4xl-A with orifice diameter 70 μm. The main benefit of this paper lays in the optimizing of the spreading and coffee ring effect of several silver based nano-inks through the surface temperature changes and investigation of the deposited structures’ shapes after the sintering.