This document provides an overview of nanotechnology, including key facts about its scale in nanometers, major public investments in research, approaches such as top-down and bottom-up, potential applications in areas like food and cosmetics, and implementation tools like atomic force microscopes. It also touches on ongoing work in nanotoxicology, health and environmental concerns, and the story so far in regulation.

1. Nanotechnology
Size Matters
We are here!
Tech. Implementation
Story So far…
References..

2. Size Matters
One nanometer (nm) is one billionth, or 10−9, of a meter.

3. We are here!
•USA has invested 3.7 billion dollars
•The European Union has invested 1.2 billion
•Japan 750 million dollars
•Nanomaterials
•Bottom-up approaches
•Top-down approaches
•Functional approaches
•Biomimetic approaches

4. Tech. Implementation
Atomic Force
Microscope (AFM)
Scanning
food products; Tunneling
Microscope (STM)
Most applications are
limited to the use of
Surface coatings,
"first generation"
passive nanomaterials
which includes
cosmetics, s titanium dioxide in
sunscreen,

5. Story So far…
•Nanotoxicology
•Health and environmental concerns
•Regulation

6. References
En.wikipedia.com
HowStuffWorks.com
scaleofuniverse.com