The ExtremeTech blog notes a development by Pennsylvania-based NanoHorizons Inc. to market gold and silver nanoparticles that have antimicrobial properties
. These particles can be added to clothing to fight odors, to mascara to prevent eye infections, and to food packaging to extend shelf life. According to the press release
, prices for small quantities will range from $100 to $400 per liter -- a price point attractive enough for manufacturers.