This study is on developing a simple motionless printing in which polyacrylonitrile and N,N-dimethylformamide solution is electrically driven from a fixed nozzle head in a coagulation medium of chloroform and mineral oil. The effect of liquid medium on the bending instability of the jet is studied using the discretized model and experiments. Furthermore, for motionless printing, the inhibited bending motion of the jet is used to control the deposition of the jet to form a square pattern on the collector. The resulting fiber collection pattern obtained from the experiments is favorably compared with the simulation results. In addition, the effects of the switching time and distance between the collector plates on the accuracy of the square and circle three-dimensional patterns are studied from the simulation.
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