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. Author manuscript; available in PMC: 2009 Sep 14.
Published in final edited form as: J Micromech Microeng. 2008 Jan 1;18(4):450131–450137. doi: 10.1088/0960-1317/18/4/045013

Figure 4.

Figure 4

ATR-FTIR spectra: pHEMA photo-grafting on SU-8 surface:

a.) Reference spectrum of hydrogel (95% HEMA, 5% TEGDMA).

b.) Surface after 50 minutes of polymerization.

c.) Surface after 10 minutes of UV initiated polymerization.

d.) Unmodified SU-8 surface.