Nanosilver
Breakthrough or Biohazard?
Silver Through the Ages
1861
ca. 750 B.C.
ca. 50 A.D.
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 Cube
54 dots
Small Cubes
162 dots
Germs!!!
Germs!!!
Argyria
Zebra Fish
Normal Fish
Larvae
QuickTime™ and a
decompressor
are needed to see this picture.
Larvae Grown
in Nanosilver
QuickTime™ and a
decompressor
are needed to see this picture.
To Learn More
www.epa.gov/oppt/nano
www.nanotechproject.org/publications/archive/silver
This project was supported by the National
Science Foundation under Grant No. ESI0532536.
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.