Fig. 1: Mechanism of embedded 3D printing by solvent exchange (3DPX).
From: Fast 3D printing of fine, continuous, and soft fibers via embedded solvent exchange
Schematic illustration showing the mechanism of embedded 3D printing (a) with solvent exchange and (b) without solvent exchange. c Ternary phase diagram for nonsolvent-induced solidification (i.e., phase separation). The given points represent a proportion of the three components. The extruded polymer ink in gel solvent undergoes a change in component proportions along the solidification pathway (from red point to blue triangle). d Photograph of 3D printed coil using solvent exchange (3DPX) with 5 µm nozzle. Optical microscopic image of a printed (e) coil with a tapered helical diameter from 100 to 10 µm and (f) a coil with a helical diameter of 5 µm. g SEM image showing the diameter of the printed filament.
