anotechnology-120纳米技术.ppt

Garns | Nanotechnology,Nanotechnology,Thinking big about very very small things Rudy Garns Northern Kentucky University,Scientists,Scientists: empirical research and discovery of facts about nature Philosophers: forecasting and evaluating the implications Informed imagination,Scientists,Scientists: empirical research and discovery of facts about nature Philosophers: forecasting and evaluating the implications Informed imagination,Use the scientific method Use experiences to confirm hypotheses and theories How do we explain natural phenomena?,Philosophers,Scientists: empirical research and discovery of facts about nature Philosophers: forecasting and evaluating the implications Informed imagination,Philosophers,Scientists: empirical research and discovery of facts about nature Philosophers: forecasting and evaluating the implications Informed imagination,Love of wisdom Big Questions: What is knowledge? What is truth? What does it mean to exist? What does it mean to be right or wrong, good or bad? What does it mean to be beautiful?,Scientists and Philosophers,Scientists: empirical research and discovery of facts about nature Philosophers: forecasting and evaluating the implications Informed imagination,How Tall Are You?,How Tall Are You?,Someone who is five feet tall is,How Tall Are You?,Someone who is five feet tall is .00095 miles tall (1/1000) 1 mile = 5280 feet,How Tall Are You?,Someone who is five feet tall is .00095 miles tall (1/1000) 1 mile = 5280 feet 1 light year = 6 trillion miles Proxima Centauri is 4.2 light years away,How Tall Are You?,Someone who is five feet tall is .00095 miles tall (1/1000) 1 mile = 5280 feet .00000000000000016 light years tall 1 light year = 6 trillion miles Proxima Centauri is 4.2 light years away,Cells and DNA,The average human body = 10-100 trillion cells Nearly every cell contains DNA; 4 nm wide and uncoiled 2-3 m long All DNA in all cells = 70 trips to sun and back,Cells and DNA,The average human body = 10-100 trillion cells Nearly every cell contains DNA; 4 nm wide and uncoiled 2-3 m long All DNA in all cells = 70 trips to sun and back,Cells and DNA,The average human body = 10-100 trillion cells Nearly every cell contains DNA; 4 nm wide and uncoiled 2-3 m long All DNA in all cells = 70 trips to sun and back,Cells and DNA,If Legos Were the Size of Atoms,The advantages of working at the nanoscale Greater control and flexibility building from the ground up Special properties at the nanoscale,If Legos Were the Size of Atoms,Increase flexibility and control but. How many would you need? How would you see them? How would you work with them?,If Legos Were the Size of Atoms,Increase flexibility and control but. How many would you need? How would you see them? How would you work with them?,Atoms,One strand of hair: 80,000 nm wide 48,000,000,000,000,000,000 atoms,Atoms,One strand of hair: 80,000 nm wide 48,000,000,000,000,000,000 atoms How could we see them?,Looking at the Nanoscale,Looking at the Nanoscale,Scanning Tunneling Microscope Atomic Force Microscope,Looking at the Nanoscale,Looking at the Nanoscale,But how could we work with them?,Looking at the Nanoscale,But how could we work with them?,Clue: Our bodies/cells work with nanoscale molecules and atoms,Looking at the Nanoscale,But how could we work with them?,Clue: Our bodies/cells work with nanoscale molecules and atoms,Nano Factories,Nano Factories,Nano-motor,Nano-motor,Nanotubes,Carbon nanotubes VERY strong VERY light weight,What Can Nanotechnology Do For Us?,Cosmetics Dentistry Medicine/Health Clothes Cars Smaller, faster, more powerful computers,Smart Materials Paint Cloth Furniture Military Equipment,Nanotechnology Today,Nanotechnology Tomorrow,Cosmetics: Hair,Change your hair color “Cure” baldness and remove unwanted hair,No More Dentist?,Clean teeth Freshen Breath Prevent Gum disease,Biomedical,Biomedical,Dendrimers carry chemicals to the brain through the blood-brain barrier,Biomedical,Dendrimers carry chemicals to the brain through the blood-brain barrier,Biomedical,Dendrimers carry chemicals to the brain through the blood-br