The role of vortices in the process of impurity nanoparticles coalescence in liquid helium

► Metal atoms condensation in superfluid helium occurs mainly in quantized vortices. ► The main products are nanowires, beads appeared at large metal content. ► Traces of zigzag-shaped nanowires formed in usual vortices of liquid helium. ► The production of long polymer monochains was shown to be possible in HeII.