Table 1.

NP chemical composition, size and use.

NP type	typical source	manufacturer	size (nm)
antimony oxide (Sb2O3)	industrial processes, paints, ceramics, etc.	Nanoamor, USA	41–91
silver (Ag)	antimicrobial coating	Nanoamor, USA	90–240
titanium oxide (TiO2)	hip and dental coating	Tal, USA	20–160
cobalt (Co)	hip and stent material	Fluka, Germany	28
nickel (Ni)	stent material	Nanoamor, USA	62
Fe3O4	stent material	Nanoamor, USA	20–30
Fe2O3	stent material	Nanoamor, USA	55–65