Focusing of a Paste Flow Upon Exposure to an External Electromagnetic Field

The feasibility of application of a ferromagnetic conductive cylinder nozzle to focus the fluid flow extruded by a piston dispenser is assessed in the present work. Based on the limiting cases of stationary and laminar fluid flows, it is shown that an electric field can be created between the fluid and the cylindrical nozzle due to the anomalous Hall effect in the cylindrical nozzle with a current flowing along the cylinder. This field is created by the electric current caused by the mechanical movement of the fluid. This electric current of the fluid creates around itself the cylindrical magnetic field that penetrates into the ferromagnetic nozzle. On the example of carbonyl iron, it is shown with allowance for the corresponding approximations that an increase in the current flowing through the ferromagnetic nozzle should lead to a decrease of the fluid flow radius.