Production of Submicrometer Diameter Fibers by Two-Fluid Electrospinning


  • This research was supported in part by the U.S. Army through the Institute for Soldier Nanotechnologies, under Contract DAAD-19-02D-0002 with the U.S. Army Research Office. The content does not necessarily reflect the position of the Government, and no official endorsement should be inferred. We are grateful to David Kaplan (Tufts University) for providing the silk solutions used for electrospinning.


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Electrospinning of nanofibers of materials that are difficult to process using conventional techniques is reported. Two fluids are electrospun (see Figure) into fibers with core/shell morphology. The “electrospinnable” shell fluid serves as a process aid to electrospin the core fluid. Three examples are illustrated: production of fibers with diameters less than 100 nm, fibers formed of low-molecular-weight polyaniline, and non-blended electrospun silk fibers.