1. Nanofabrication Mr. Rust Project STEP April 12, 2006

2. Warm-up Question
What are the major applications areas of nanotechnology?
Materials
Electronics
Medicine
Agriculture
Energy

3. Outline Nanofabrication Lego activity Why is it so hard to fabricate?
Review answers from article
Discussion of Pros and Cons
Paper time

4. Landmark Achievements in Manufacturing

5. Landmark Achievements in Manufacturing
The Hammer – 2.5 million years ago
One of the earliest tools
Enabled wood and stone manufacturing

6. Landmark Achievements in Manufacturing
The Factory – late 1700’s
Workers gather together to perform hand labor
Streamlines manufacturing process for textiles

7. Landmark Achievements in Manufacturing
Assembly line – 1900
Sequential fabrication steps, specialized tasks
Made automobiles possible

8. What about manufacturing very small things?

9. Computer Chip Fabrication
There are 144 computer chips on this wafer
How do we make them so small?

10. Top-down Fabrication
Take something big and cut it down over and over again
Scissors
Drilling
Etching with chemicals

11. Bottom-up Fabrication
Build a structure from the ground up
One atom at a time O H H

12. Bottom-up Fabrication
Build a structure from the ground up
One atom at a time – Like LEGOs O H H

13. LEGOs Activity - 1 Build your own molecule with the big Legos
You can work with a partner

14. LEGOs Activity - 2
Try to build Ms. Lee-Alvarez’s molecule with the smaller Legos
You can work with a partner

15. LEGO Challenge Re-build the molecule You can work with a partner
This time…you must wear gloves
Who can do it the fastest!

16. Nano fabrication is hard!
Our hands are just too big
The atoms are just too small
Solution
More precise tools
Atomic Force Microscope
Self-assembly
Atoms assembly on their own

17. Pros and Cons Revisited
Faster, cheaper
Materials, Electronics, Medicine, Agriculture, Energy
Cons
Environment
Health
Terrorism
Runaway Replicators
Economics
Hard to fabricate

18. Paper Time

19. Take a Position on Nanotechnology
Using the information you have learned about nanotechnology (from Monday’s class and the article you just read) write a paper to support or oppose funding for nanotechnology. In your paper, you must have the following sections:

20. Sections Introduction: Summary of Pros and Cons: Your position:
A brief statement of the question you are answering
Summary of Pros and Cons:
Discuss the potential benefits and the dangers of nanotechnology. No matter which side you take, you must discuss both positives and negatives.
Your position:
Summarize why you support or oppose funding for nanotechnology. Use the information in the pros and cons section to back up your statements.
The paper needs to be either 2 pages (page = side of paper) written or 1 page typed. There is no right or wrong answer here, so answer honestly and use the facts to support your statement.

21. Article on Nanotechnology
1. What properties can be exploited at the nanoscale?
Electrical, chemical, physical

22. Article on Nanotechnology
2. From what fields did nanotechnology emerge?
microscopy
material science
molecular-level manipulation
classical and quantum physics

23. Article on Nanotechnology
3. List some examples of nanotechnology innovations that have already been developed.
Single molecule transistors
enzyme-powered bio-molecular motor with nickel propellers
minute carrier able to cross from the blood to the brain to deliver chemicals to fight tumors

24. Article on Nanotechnology
4. How much money did the US and Japan each spend on nanotechnology in 1997 and 2002?
US $432 million $604 million
Japan $120 million $750 million

25. Article on Nanotechnology
5. What problem areas have been identified with nanotechnology?
Equity – who will benefit, rich or poor?
Privacy & security – invisible microphones, cameras, etc
Environment

26. Article on Nanotechnology
6. What product was compared to nanotechnology?
Genetically modified corn

27. Research Project Choose an application of nanotechnology
Research it on the internet
What is it
Why is nanotechnology being used for this application?
How is it manufactured
4 page report (typed with figures)
Make sure to include your sources

28. Campus Visit 9:00 AM – Welcome – Julie Burdick, Pre-Admissions
9:15 AM – Dr. Jeff Johnson, BME
9:45 AM – Undergraduate student panel Q & A
10:00 AM – Tours of Engineering Labs
11:00 AM – Lunch
12:00 PM – Tour of Mr. Rust’s Lab
12:30 PM – Presentation by Dr. Ahn
1:30 PM – Leave for WHDT

29. LEGOs Activity - 1 Build your own molecule with the big Legos
You have 5 minutes

30. LEGOs Activity - 2 Build this molecule with the smaller LEGOs
Color does not matter
Who can do it the fastest?

31. LEGOs Activity - 3
Build this same structure…but now you must use the gloves
Who can do it the fastest?