or in a further embodiment below about 1 u03bcm in operation the precursor 30 is extruded into long stable liquid jets 35 with a diameter of about 10 u03bcm or less the highly viscous extrusion liquid 20 stabilizes the extruded precursor 35 maintaining fiber geometry while solidification occurs solidification of the extruded precursor 35 results in a continuous nanofiber of variable lengths moreover solidification occurs before the effects of breakup occur under previous wet spinning methods a low viscosity precursor e g a droplet would break inside a high viscosity fluid due to the formation of air bubbles the air bubbles may be caused by external agitation surface tension etc however in the present invention the low viscosity precursor is extruded and stabilized by the high viscosity extrusion liquid such that the low viscosity precursor reaches very low micron or submicron dimensions before the precursor may be cut off i e produce multiple droplets thereafter upon stabilization the extruded droplet solidifies to produce continuous nanofibers which is operable to be rolled into a spool solidification may occur by various methods known to one or ordinary skill in the art for example freezing solvent evaporation polymeric cross linking or combinations thereof the method may produce continuous nanofiber for example polymers ceramics glasses metals or combinations thereof in specific embodiment the method can be applied to the production.