Figure 3.

Patterning concentration depends on the photoinitiator concentration and the total light dosage delivered to the system. (a) By varying the amount of photoinitiator present, we are able to control the level of patterning concentration for a given dosage (▼ = 1.1 mM, ▲ = 2.2 mM, ◻ = 4.4 mM, ○ = 8.8 mM photoinitiator I2959). (b) As the light intensity remains near-constant throughout the thickness of the gel, patterning concentration is largely uniform throughout the entirety of the gel. Data reported as mean ± std. Scale bar = 200 μm.