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Nanosilver - PowerPoint PPT Presentation


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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

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Presentation Transcript
slide1

Nanosilver

Breakthrough or Biohazard?

slide3

Silver Through the Ages

1861

ca. 750 B.C.

ca. 50 A.D.

slide4

Silver Nanoparticles

~15 nm in diameter

how small is a nanometer
How Small is a Nanometer?

A nanometer = one billionth of a meter

= .000000001 meters

slide6

How Many Dots?

9 dots per side x 6 sides

= 54 dots

slide7

How Many Dots?

6 dots per cube x 27 cubes

= 162 dots

slide8

How Many Dots?

Big Cube

54 dots

Small Cubes

162 dots

slide15

Larvae Grown

in Nanosilver

slide16

To Learn More

www.epa.gov/oppt/nano

www.nanotechproject.org/publications/archive/silver

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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.