1. It’s a Nano World After All Mr. Rust Project STEP April 10, 2006

2. Warm-up Question Who had the most fun on spring break?
The correct answer is Mr. Rust

3. Outline Introduction Big vs Small What is nanoscale?
Activity: How small is nano?
Why is Nanotechnology important?
Applications of Nanotechnology
Terms and Definitions

4. There are some things we like to make big

5. World’s Tallest Building
Taipei 101 Tower
Taipei, Taiwan
509 m (1,671 ft)

6. World’s Fastest Airplane
SR71 Blackbird
2200 mph = 983 m/s

7. World’s Longest Bridge
Akashi-Kaikyo Bridge
Kobe-Naruto, Japan
1,991 meters

8. There are other things we’d like to make smaller

9. Can Anyone Figure Out What This Was?
Computer (from 1940’s)

10. Computers - Now

11. Can Anyone Figure Out What This Was?
Telephone (circa 1900)

12. Phones - Now

13. Why the Small Trend?
Some things work better, faster, cheaper when they are smaller
Faster computers
Smaller cell phones
How small can we go?
Nanotechnology is the pursuit of that goal

14. What is nanotechnology?
The science of manipulating matter on the scale of nm
nm = nanometers
1x10-9 m
1 billion nanometer = 1 meter
Nanotechnology = Very very very small
The word ‘Nano’ comes from Greek word meaning “dwarf”

15. Let’s do some comparisons
Work with the person next to you
Arrange the objects based on size from largest to smallest

16. And the Answers Are…

17. The Scale of Things 10.Elephant 5 m 9. Human 1 m 8. Head of pin 2 mm
7. Grain of sand 1 mm
6. Dust mite μm
5. Human hair 100 μm
4. Red blood cell 10 μm
3. Virus nm
2. Diameter of DNA 2 nm
1. Atom nm

18. Why Nanotechnology? Super strong materials Stain-resistant clothes
Fabrics as strong as steel

19. Why Nanotechnology? Faster and smaller computers
Your cell phone will also be a computer
Electronic paper

20. Why Nanotechnology? Medical advances
New ways to monitor and treat diseases
Nanorobots
Implantable chips

21. Why Nanotechnology? Agriculture Make crops directly, atom by atom
Feed everyone
Improve food packaging
Reduce spoiling

22. Why Nanotechnology? Energy
More efficient energy sources and applications
Better solar cells
Lights - LEDs

23. Some products already use nanotechnology

24. Sunscreen
New sunscreens that use TiO2 nanoparticles to absorb UV rays

25. Self Cleaning Windows With nanoparticles Without nanoparticles
What happens to water droplets when they dry?

26. Stain Resistant Clothes
Would you rather have kool-aid soak into your pants or have it bead-up on the surface?
Spills don't soak in, they just roll away.
Stubborn stains wash out easily.

27. Sports Shock-absorbing shoes give softer landings
Great for basketball players
Balls keep their pressure for longer gameplay
Stronger tennis rackets and golf clubs can deliver more powerful, straighter shots.

28. Candy: Willy Wonka Style
Researchers are working on candy that can change on command
Flavor
Color
Nutrients
So you could eat vegetables that taste like candy!

29. Are there any dangers? Environment Health Terrorism
How will nanoparticles affect the soil, animals, water, etc.?
Health
How will nanoparticles affect you?
Terrorism
Chemical/biological warfare agents
Runnaway replicators
If we make nanorobots that can replicate themselves, what happens if we can’t stop them?
Economics
will nanotechnology reduce or add to poverty?

30. What kind of investment are we talking about here?
Investments in 2002
US invested $604 million
Japan invested $750 million

31. Where can you find more info?