NanosilverBreakthrough or Biohazard?

Silver Through the AgesSilver Through the Ages

ca. 750 B.C.

ca. 50 A.D.

1861

Silver Nanoparticles~15 nm in diameter

How Small is a Nanometer?

A nanometer = one billionth of a meter = .000000001 meters

How Many Dots?

9 dots per side x 6 sides = 54 dots

How Many Dots?

6 dots per cube x 27 cubes = 162 dots

How Many Dots?Big Cube54 dots

Small Cubes162 dots

Germs!!!

Germs!!!

Argyria

Zebra Fish

Normal Fish Larvae

QuickTime™ and a decompressor

are needed to see this picture.

Larvae Grownin Nanosilver

QuickTime™ and a decompressor

are needed to see this picture.

To Learn Morewww.epa.gov/oppt/nano

www.nanotechproject.org/publications/archive/silver

This project was supported by the National Science Foundation under Grant No. ESI-0532536.

Any opinions, findings, and conclusions or recommendations are those of the author and do not necessarily reflect the views of the Foundation.

Additional funding for development of this product was provided by the Nanoscale Science and Engineering Center headquartered at Harvard University and the Center for High-rate Nanomanufacturing headquartered at Northeastern University, University of Massachusetts-Lowell and the University of New Hampshire, with support from the National Science Foundation.