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Cover Image, Volume 51, Issue 18 Journal of Polymer Science Part B: Polymer Physics 51

Article first published online: 5 AUG 2013 | DOI: 10.1002/polb.23355

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Electrospinning of a semi-dilute polymer solution can yield short nanofibers of sub-micrometer diameter. The short nanofiber shown on the cover is 500 nm in diameter and 30 μm in length, and has a bead-on-string structure. Identified by Israel Greenfeld and Eyal Zussman on page 1377 as the outcome of polymer entanglement loss caused by the strong extensional flow of electrospinning, short nanofibers are promising as compact, aligned, rigid nanostructures, with possible applications in tissue engineering, drug delivery, composite reinforcement, filtration, electrical and thermal conduction, and light amplification.

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