High speed photography setup: (a) high speed camera, (b) spinneret, (c) lamp, (d) collector.
(a) Evolution of jet at orifice for fiber production through forcespinning as it accelerates to 4500 rpm, (b) jet shape at different angular velocities.
Initial forces on material: (a) forces within spinneret, (b) forces on the pendant drop.
Fiber produced through forcespinning: (a) angled view (b) time-lapse top view.
Fiber trajectory of 8 wt. % PEO solution spun at 4000 rpm.
Forces experienced by the fiber during travel.
Aerodynamic disturbance experienced by the fiber in successive 928 μs intervals.
Forcespinning fiber extension process: ① jet exit, ② orbital trajectory, ③ fiber vibration from aerodynamic disturbance, ④ orbital expansion, ⑤ fiber collection method.
Fiber trajectories with varying angular velocities.
Fiber trajectories with varying viscosities.
Formation of various orifice exit angles (a) curved opposite of rotation 89°, (b) curved opposite of rotation 30°, (c) curved direction of rotation 30°, (d) curved direction of rotation 89°, (e) straight needle.
Initial fiber trajectories with varying orifice exit angles.
Fiber trajectories with varying aspect ratios.
Fiber trajectories with varying fluid fill.
Variance of fiber trajectories under the same conditions.
Fiber diameters at varying angular velocities using 6 wt. % PEO.
Fiber diameters at varying material concentrations forcespun at 6000 rpm.
Fiber diameters at varying orifice orientations using 6 wt. % PEO, forcespun at 6000 rpm.
Fiber diameters at varying aspect ratios using 6 wt. % PEO, forcespun at 6000 rpm.
Fiber diameters with varying fluid fill using 6 wt. % PEO, forcespun at 6000 rpm.
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