Functionalized Magnetic Nanoparticles and Their Effect on Escherichia coli and Staphylococcus aureus

Figure 3

Scanning electron microscope images of (a) unmodified magnetite nanoparticles, (b) APTS-magnetite, (c) PEG-magnetite, and (d) TEOS-magnetite. Scale bar = 200 nm.

(a)

(b)

(c)

(d)