nanosilver
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
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
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Larvae Grownin Nanosilver
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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.