Upward needleless electrospinning of multiple nanofibers

A. L. Yarin, E. Zussman

Research output: Contribution to journalArticlepeer-review

403 Citations (Scopus)


A new approach to electrospinning of polymer nanofibers is proposed. A two-layer system, with the lower layer being a ferromagnetic suspension and the upper layer a polymer solution, is subject to a normal magnetic field provided by a permanent magnet or a coil. As a result, steady vertical spikes of magnetic suspension perturbed the interlayer interface, as well as the free surface of the uppermost polymer layer. When a normal electric field is applied in addition to the system, the perturbations of the free surface become sites of jetting directed upward. Multiple electrified jets undergo strong stretching by the electric field and bending instability, solvent evaporates and solidified nanofibers deposit on the upper counter-electrode, as in an ordinary electrospinning process. However, the production rate is shown to be higher.

Original languageEnglish
Pages (from-to)2977-2980
Number of pages4
Issue number9
Publication statusPublished - 2004 Apr


  • Electrospinning
  • Nanofibers
  • Polymer

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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