Flexible conductive patterns using electrohydrodynamic jet printing method based on high-voltage electrostatic focusing lens

To improve the resolution of printed patterns fabricated with PEDOT:PSS organic conductive polymer printing solutions by an electrohydrodynamic (EHD) jet printing method, the EHD jet printing method based on the high-voltage electrostatic focusing lens was proposed based on the analysis of the theoretical model of the EHD jet printing method. Using the PEDOT:PSS mixed solution as the printing solution, flexible conductive patterns were printed on the photographic paper by the EHD jet printing method based on the high-voltage electrostatic focusing lens. The effects of the working voltage, the velocity of the motion platform, and the flow rate of the injection pump on the width of the printed patterns were analyzed. Compared with the traditional EHD jet printing method, it has been verified that the EHD jet printing method based on the high-voltage electrostatic focusing lens has higher resolution under the same printing conditions, which provides a new method for achieving high-resolution pattern printing of PEDOT:PSS organic conductive polymer printing solutions.