Relating the Surface Properties of Superparamagnetic Iron Oxide Nanoparticles (SPIONs) to Their Bactericidal Effect towards a Biofilm of Streptococcus mutans
Fig 5
SEM images of (a,d) bare, (b,e) positively charged and (c,f) negatively charged SPIONs before and after incubation with the biofilms. Following incubation with the bacterial biofilms, the SPIONs appeared to be coated with soft matter.