![]() Stretching breakup of a conical liquid bridge with a moving contact line This is helpful for the optimization of liquid loading for transfer printing. Accordingly, different sizes of remnant volume can be obtained by adjusting U and R top. It is found that V d decreases with an increase of U and increases with an increase of R top. Based on the breakup position and the remnant radius, the influences of U and R top on remnant volume V d are examined. An increase of U decreases the breakup time and increases the breakup position. To analyze the influence of the moving contact line on bridge breakup, neck evolution is tracked under different U. And the amount of contact line movement is basically constant. ![]() The results show that the increase of the stretching velocity U and the decrease of the initial top radius R top accelerate the contact line motion. For the moving case, factors affecting the contact line motion are then considered. ![]() Compared to the pinned case, the moving contact line causes a shift of the pressure maximum from the bridge neck to top, and it facilitates the evacuation of the bridge top. The effect of contact line state is investigated by examining the pressure at the symmetry axis. A conical liquid bridge is established by an electric field and stretching breakup is investigated here. To precisely control the droplet loading and improve the dispensing resolution, a detailed study of bridge breakup with a moving contact line is required. ![]() The stretching breakup of a conical liquid bridge is the core process of micro-dispensing. ![]()
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