introduction to nanotechnology. nanoscale the scale of materials considered nanotechnology are...

Introduction to Nanotechnology

NanoscaleThe scale of materials considered nanotechnology are

between one and one hundred nanometers or nm.

1 nanometer is 10 -9 meters, or 1/1,000,000,000 m, or 1 billionth of a meter

Scale; one human hair is ~ 80,000 nm

Nanoscale

10⁻⁹~ 1,000 atoms acrossNanoscale=~100 nM

Goals of Nanotechnology

Strength of StructuresSpace Industry and Development

Clean EnergyDefense Systems

MedicalWater Filtration

…and Much More!

What is Nanotechnology?

Arranging Atoms(Carbon)

• 1 way---diamonds• 2 way---graphite• 3 random way---soot

Carbon Nanotubes

• Carbon 60• Bucky ball design• Strength in numbers

So Small…

• Surface area actually becomes larger compared to its volume

Possibilities:Electrostatic Self Assembly (ESA)

• Self-regeneration• Building up piece by piece

Medical

Medical

AstroMedica

• Hydroxi-appetite– Nano-material human bone design

Nanorobotics

Nanorobotics

Solar Energy

Copying Lessons of Nature

Photosynthesis Photovoltaics

Solar Panels

Plastic PolymersUniversity of California-Berkeley

Experiments with polymer-based solar cells-active longer

-more productive-higher energy levels

-lightweight-cheaper

-less fragile

Computer Technology

Technology

Todays Uses of Nanotechnology (cont’d)

• All around us– sunscreen

– rechargeable batteries– clothing stain repellants

– computer chips– cosmetics

Todays Uses of Nanotechnology (cont’d)

– bottles– bike frames– -automotive– tennis balls– toothpaste

Impacts

Risks of Nanotechnology

Material construction deterioration– Heavy loading

Technology advancing at very rapid pace

Risk vs.

Reward?

Other Risks

• Very dangerous health concerns– Can enter body and break through barriers • Even at cellular level

Possible Impacts

Global WarmingDiseaseCleaner Water

Optics

The Future?

Why this is important to teach