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. 2014 Jan 8;15(1):774–786. doi: 10.3390/ijms15010774

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© 2014 by the authors; licensee MDPI, Basel, Switzerland

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 1. — Implementation of the modified coaxial electrospinning processes using a concentric Teflon spinneret. (a) A diagram of the modified coaxial process; (b) Digital images of the homemade concentric Teflon-coated spinneret; (c) Connection of the power supply with spinneret; (d and e) Observations of the coaxial electrospinning processes: a typical fluid jet traveling process and a typical compound Taylor cone under a voltage of 15 kV and at a fiber collected distance of 20 cm for fabricating nanofibers F4.