Using threshold polymerization kinetics
3D Printing: From decimeter to µmeter?

Figure 3 shows the classic kinetics of free-radical chain polymerization under continuous light excitation, with virtually zero speed as long as the inhibitors present in the reactive zone have not been consumed. Under these conditions, by using several light beams from different directions in space and with controlled local amplitudes, it is possible to reach any point in space with light intensities either below threshold or above. Since polymerization does not involve any significant...