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. 2014 Feb 27;9(2):e90189. doi: 10.1371/journal.pone.0090189

Figure 2. Surface structure analysis of an Si3N4 surface under different coating conditions.

Figure 2

Three-dimensional atomic force microscope height images. (A) 0.01% poly-L-lysine coated plastic dish, (B) non-coated Si3N4 surface, (C) 0.01% poly-L-lysine coated Si3N4 surface at 1 day after coating and (D) at 5 days after coating, (E) 0.05% poly-L-lysine coated Si3N4 surface at 1 day after coating and (F) at 5 days after coating.