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(a) Apparatus setup for wet spinning gel. (b) Magnification of the coiled gel filament after extrusion, gelator solution: 4 wt % 31b solution in DMSO (50 μL min−1, 20 G needle, ID 600 μm. (c) Schematic explanation of the wet spinning method. (d) Image of the DMSO jet after escaping the needle at a speed of 30 μL min−1. Reprinted with permission from [66]. Copyright 2019 Royal Society of Chemistry under the creative commons license.
