Nanotech article Flashcards
Nanomaterials measure between 1 and
100 nanometers
Nanos is the Greek word for a
Small person
A nanometer is 1…of a meter
Billionth
One of the main appeals of nano materials is that they have
Different properties than everyday materials
Nano materials do not melt at the same temperature as
Everyday materials and do not conduct electricity like everyday materials
The different properties in nano materials is due to an increase in their
Surface area and their unusual shapes
Their surface area and unusual shapes can affect how
Durable they are, how they conduct electricity and heat, and how they absorb light
A nanotube is essentially a sheet of pure
Carbon graphite rolled into a cylinder
In an individual graphite layer called graphene carbon atoms form a series of
Six sided hexagons next to one another
When a graphene sheet is rolled up to form a tube the tubes wall is made of
Carbon hexagon
Hexagons can be parallel to the
Axis of the tube or form a helix that winds along the tube
A nanotubes diameter and how the hexagons are arranged on the all affect the way nanotubes conduct
Electricity
A nanotubes diameter and how the hexagons are arranged on the wall affect the way nanotubes conduct
Electricity
Nanotubes diameter and hexagon arrangement make them useful for making electronic components
Much smaller than those currently used
The nanotubes are lighter and stronger than steel and this they could make
Good body armor
Carbon nanotubes in the shape of long yarn-like fibers could outperform even the strongest
Bullet-proof materials on the market
Nano wires are solid rods of silicon or other
Materials that are only a few nano materials wide
A nanowires length is much longer than it’s worth and it behaves like a
Wire in which electrons can move this conducting an electric current
Nanowires have shown potential application in
Solar cells
Solar cells harvest the Suns energy and turn it into
Electricity more efficiently than present solar cells
Nanowires have been used to build sensors that can detect
Disease-triggering molecules in the body or harmful chemicals in the air
A “buckyball” (fullerene) is a hollow soccer ball shaped molecule made of
69 Carbon atoms, each Carbon atom bonded to three adjacent Carbon atoms
Other existing buckyballs contain either
70/80 Carbon atoms
Several academic laboratories and companies are developing modified buckyballs for
Therapeutic uses
Luna innovations is testing buckyball based therapeutics to block
Inflammation, swelling, and pain associated with medical conditions
This technology is based upon the buckyballs’ unique ability to trap harmful
Free radicals
Free radicals increase
Inflammation and can damage or kill cells
Free radicals are molecules that have an uneven number of
Electrons