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. Author manuscript; available in PMC: 2009 Oct 6.
Published in final edited form as: Nat Photonics. 2007 Dec 9;2:39–43. doi: 10.1038/nphoton.2007.250

Figure 4. Real-time monitoring during UV-induced crosslinking of polymer.

Figure 4

Four distinct phases are observed, characterized by a constant Brillouin shift before curing (−100 s to 0 s), dynamic changes during UV illumination (0 s to 100 s), an increase during post-illumination crosslinking (100 s to 250 s), and a steady state after being fully cured (after 24 h). The elastic modulus was calculated from the measured Brillouin frequency shift.