material such as gold brass copper silver steel platinum or other metal and alloys thereof in other embodiments the slot dies 10 10 10 u2032 10 u2033 could be totally or partially comprised of non metal or non conducting materials such as plastics ceramics etc as illustrated in fig3 h 4 i and 5 h the slit width u201c w u201d or distance between the edges 34 of the slit 16 should be of sufficient width to allow for taylor cone formation and stabilization in general and be between 0 01 mm and 10 mm inclusive or between 0 05 mm and 1 mm inclusive in one embodiment as illustrated in fig3 a and 4 a the arc length u201c l u201d or the length of the edge 34 of the slit 16 can be between 1 cm and 10 m inclusive or in one embodiment between 5 cm and 1 m inclusive fig3 a 4 m illustrate electrospinning slot dies 10 10 10 u2032 unique to the present disclosure with a spinning edge 12 having a radius of curvature u201c r u201d the spinning edge 12 may have a sharp edge 34 as shown in fig3 d 4 e and 5 d an angle u03b8 defined by the sharp edge 34 provides suitable perturbation for taylor cone formation the angle u03b8 of the sharp edge 34 may range from 1 degree to 90 degrees inclusive or 1 degree to 45 degrees inclusive each of the slot dies 10 10 10 u2032 10 u2033 has a fluid pathway network 21 that includes a flow channel 26 at the fluid entry end 37 a cavity 28 and a spinning edge 12 with a slit.