TABLE 2.
MEW structural design overview: Different scaffold architectures fabricated with MEW. Indicated are die dimension of building blocks, the fiber diameter and the processing temperature (in°C), the voltage (in kV), the distance between collector and nozzle (in mm), the printing speed (in mm s−1) and the material flow (in ml min−1 or bar).
| MEW architecture | Dimension | Fiber diameter | Printing parameters | Citation | |||||
|---|---|---|---|---|---|---|---|---|---|
| Temperature | Pressure | Speed | Collect or distance | Voltage | |||||
| Box-Structure 90° | Box diameter: 100 µm | 820 nm | 84–109°C | 2.8 bar | 91.6 mm s−1 | 1.5 mm | 2.9 kV | Hochleitner et al. (2015) | |
| Serpentine Scaffold | Arc diameter: 0.5–1 mm | 20 µm | 75–85°C | 2 bar | 4.7 mm s−1 | 4 mm | 6–6.5 kV | Saidy et al. (2019) | |
| Box-Structure 10–45° | Fiber Spacing | 10 µm | 90°C | 0.5 bar | 11.5 mm s−1 | 20 mm | 12 kV | Eichholz and Hoey, (2018) | |
| 300 µm | |||||||||
| Offset-Box-Structure 90° | Box diameter: 250–750 µm | 6–10 µm | 80°C | 20 ml h−1 | - | 10 mm | 5–7 kV | Abbasi et al. (2019) | |
| Hexagonal | Side length: 400–800 µm | 20 µm | 85–90°C | 1 bar | 4.5 mm s−1 | 3.5 mm | 4.5 kV | Castilho et al. (2018) | |
| Sinusoidal | Wavelength: 336 µm | 27 µm | 90–105°C | 4 bar | 2.2–3 mm s−1 | 4.5 mm | 5.5 kV | Hochleitner et al. (2018a) | |
| Peak-to-peak: 139 µm | |||||||||