Electron micrograph of<unk> s<unk> s are<unk> s of<unk>  of between 1 nm and 100 nm in size. While frequently described as being<unk> ' some are composed of a large percentage of<unk>  oxide due to their large ratio of surface to bulk<unk>  atoms. Numerous shapes of<unk> s can be constructed depending on the application at hand. Commonly used<unk> s are spherical, but diamond, octagonal, and thin sheets are also common. Their extremely large surface area permits the coordination of a vast number of ligands. The properties of<unk> s applicable to human treatments are under investigation in laboratory and animal studies, assessing potential efficacy, biosafety, and biodistribution.
Silver nanoparticle
Respiratory pigment
Medicinal clay
Hemichrome
Organochlorine compound
Volatile organic compound
Antimicrobial properties of copper
Metaldehyde