Nanofabrication Mr. Rust Project STEP April 12, 2006

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

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

Landmark Achievements in Manufacturing

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

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

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

What about manufacturing very small things?

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

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

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

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

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

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

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

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

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

Paper Time

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:

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.

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

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

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

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

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

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

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

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

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

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

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