Application of conformal mapping technique to problems of direct current   distribution in thin film wires bent at arbitrary angle
  Current distributions in thin film wires bent at different angles were investigated with a conformal mapping method. The technique of angles rounding using three parameters was suggested. This technique enabled to obtain a smooth line having a similar form with an arc of a circle and to avoid infinite current density in the angle. The dependency between current density and the radius of rounding was examined. 
T. N. Gerasimenko and P. A. Polyakov
math-ph math.MP physics.class-ph