Figure 2

PPDO suture morphology was unchanged by gold nanoparticle infusion. (A) SEM of untreated PPDO suture (scale bar 500 μm). Inset shows the Au mapping from SEM-EDX (scale bar 200 nm). No Au signal was observed with the control. (B) SEM-EDX elemental analysis of untreated PPDO. No Au peak was observed. (C) SEM of AuNP-infused PPDO suture (scale bar 500 μm). Inset shows the Au mapping from SEM-EDX (scale bar 200 nm). Both AuNP clusters and individual AuNPs (pseudo-colored orange specs inside the yellow circles) were clearly visible on AuNP-PPDO but not on untreated PPDO. (D) SEM-EDX elemental analysis of untreated PPDO. A clear Au peak was observed.