Figure 2.

CHX-HMP nanoparticles on glass cover slips: (A and B) control (no nanoparticles); (C and D) CHX-HMP-0.5 nanoparticles; and (E and F) CHX-HMP-5 nanoparticles.

Notes: The untreated glass cover slip appeared smooth and featureless. The CHX-HMP-0.5 surface displayed aggregations of nanoparticles forming a self-assembled porous architecture; these were sparsely distributed. The CHX-HMP-5 surface displayed similar deposits of the porous aggregate, but these were more widespread, covering much of the surface. A, C, and E were taken at original magnification 2000x; the scale bar is 60 μm. B, D, and F were taken at original magnification 1000x; scale bar is 10 μm.

Abbreviations: CHX-HMP, chlorhexidine hexametaphosphate; CHX-HMP-0.5, chlorhexidine hexametaphosphate (0.5 mmol L⁻¹); CHX-HMP-5, chlorhexidine hexametaphosphate (5 mmol L⁻¹).