Nanosilver

1
Nanosilver
Breakthrough or Biohazard?
2
(No Transcript)
3
Silver Through the Ages
1861
ca. 750 B.C.
ca. 50 A.D.
4
Silver Nanoparticles 15 nm in diameter
5
How Small is a Nanometer?
A nanometer one billionth of a meter
.000000001 meters
6
How Many Dots?
9 dots per side x 6 sides 54 dots
7
How Many Dots?
6 dots per cube x 27 cubes 162 dots
8
How Many Dots?
Big Cube 54 dots
Small Cubes 162 dots
9
Germs!!!
10
Germs!!!
11
Argyria
12
(No Transcript)
13
Zebra Fish
14
Normal Fish Larvae
15
Larvae Grown in Nanosilver
16
To Learn More
www.epa.gov/oppt/nano
www.nanotechproject.org/publications/archive/silve
r
17
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.