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. 2020 Sep 17;10(1):2001232. doi: 10.1002/adhm.202001232

Figure 1.

Figure 1

MEW jet initiation of poly(ɛ‐caprolactone) and examples of scaffolds. A) Photograph sequence with time indicated after high voltage (HV) application. When an electric field is applied to a PCL melt drop, charges aggregate at the surface of the liquid closest to the collector. As the drop increases in volume, it is distorted after +1:00 min, leading to a fluid column and jet at +1:16 min (yellow arrow). Another 30 s is required for the excess volume in the Taylor cone to be drawn to the collector, at which time (+1:48 min), the MEW jet is ready to direct‐write. B) Schematic showing how this jet initiation can be followed by a stabilization pattern off‐sample, with the slug being the collected material in the jet initiation step shown in (A). SEM images of MEW scaffolds in a box morphology using different diameter fibers of C) 20 µm and D) 10 µm and fiber spacings of 250 µm and 125 µm, respectively. E) The hexagonal laydown pattern results in a triangular morphology. A) Snapshots from a previously unpublished video kindly provided by Mr. Thomas Robinson. B) Adapted with permission under the terms of the Creative Commons Attribution‐NonCommercial License.[ 11 ] Copyright 2017 The Authors. Published by Wiley‐VCH GmbH. C–E) Reproduced with permission.[ 12 ] Copyright 2019, Mary Ann Liebert, Inc. Scale bars: (A) = 1 mm; (C)–(E) = 100 µm.