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Steps for printing microfluidic chips based on 2D lithgraphy (2D laser direct writing) and 3D lithography (2PP)
| Mask substrate preparation | Mask exposure/ printing | Mask development | Chemical corrosion treatment | Alcohol cleaning | Mold substrate surface treatment | Glue coating | Soft bake | Mold exposure/ printing | Post exposure bake | Mold development | Hard bake/ exposure | Graphic transfer | Degumming | |
| 2D laser direct writing [45] | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 2PP [46] | - | - | - | - | - | ✓ | - | - | ✓ | - | ✓ | - | ✓ | ✓ |
