Figure 2.

(a) Suspended line structures used to quantify 2PP line width vs. laser power for IP-S. Line widths were measured by scanning electron microscopy (SEM) (at normal incidence; see inset image) for lines printed in 2.0 mW stepped-increments of laser power; (b) Measured and calculated effective voxel volume vs. laser power² and (c) linewidth vs. laser power for IP-S resin. The lines were calculated using the model described in Equations (3)–(6).