Fig. 5: Fidelity of frontal polymerization photoinhibition.

a Schematic of line width patterning experiments. b Image of patterned frontally polymerized pDCPD after removal of unpolymerized resin. c Grayscale and binarized images of patterned polymers for image analysis, and d–f pattern fidelity across the length of the patterned channel for different channel widths, the insets show the grayscale images of the polymerized regions for each run. To quantify the pattern fidelity the difference between the width of the patterned polymer, \({w}_{{polymer}}\), and that of the projection, \({w}_{{projection}}\), was compared along the length of the patterned region. A perfectly patterned polymer would have \({w}_{{polymer}}-{w}_{{projection}}\) = 0 over the entire length. A value less than 0 indicates the polymerized region is narrower than the projected pattern and a value greater than 0 indicates that the polymerization front has propagated outside the patterned region (overcure). See Supplementary Movie 4 for channel experiments. See Fig. S23 for additional plots.