Electrohydrodynamic micropatterning of silver ink using near-field electrohydrodynamic jet printing with tilted-outlet nozzle

This paper introduces for the first time near-field electrohydrodynamic jet printing with tilted-outlet nozzle to obtain the fine and highly conductive patterns of silver (Ag) ink. Line widths produced by near-field electrohydrodynamic jet printing are less than 6 mu m, which is approximately twenty times smaller than that of inkjet printing. Under optimized Ag ink annealing ranges 3-9 min for 30 wt% at 150A degrees C, we observed Ag line pattern resistivities as low as 7x10(-6) Omega a <...cm. Ag ink conduction mechanisms were brought to light from microstructure analysis and post-thermal-annealing examination of electrical characteristics.