monitoring consumption of the olefins in TMPTA as a function of photolysis time. EPR experiments, in conjunction with trapping radical species with 2-methyl-2-nitrosopropane (t-BuNO), identified that acrylate radicals were indeed formed through green light activation. Furthermore, we demonstrate that acrylate polymers of various macroscopic shapes as well as micron-scale objects can be produced using numerous low power visible light sources in the presence of only ZnTPP and TMPTA. These well-defined images represent the general applicability of homomolecular TTA mediated photoinitiated polymerization in both micro-and macro-fabrication applications.