U4 - Nanotechnology Flashcards
Def: Nanotechnology
it’s the production of very small materials
Def: Nanomaterials
materials that are very small that range in size between 1 and 100 nm
Eg. Of nanomaterials
graphene
What is graphene
layer of carbon that is 1 atom tick in graphite structure. 1 sheet that makes up graphite
What are the properties of graphene
- Strong
- Light
- Durable
- good electrical conductors
- good heat conductors
- almost transparent
What is Fullerine
an allotrope of carbon
Fullerine characteristics
- stable
- soluble at room temperature
- superconductors
what does some fullerine form
Some of the fullerines form hollow open ended tubes = carbon nanotubes
Properties of carbon nanotubes
- High tensile strength (100 x as strong as steel)
- High heat conductivity
- Ductile
- Chemically inert (unreactive)
How do people make ruby red tinted glass
Gold nanoparticles trapped in glass gives the glass a ruby red colour
How is yellow stained glass made
Silver nanoparticles trapped in glass gives the glass a yellow colour
What are silver nanoparticles used for
used in medical procedures and devices – antimicrobial agents
How is Silver nanotechnology used medically
Antimicrobial coatings on bandages, soaps and surgical
Instruments
How is gold nanotechnology used as medicine
carry chemotherapy drugs directly to
cancer cells
How does hollow buckminister fullerene contribute to health
carry drugs in the hollow, used to deliver drugs to exactly where they are needed in the body
How does nano-materials influence electronics
Makes electronic equipment ligher, cheaper, and more power efficient.
What is Silver nano-particle ink used for in electronics
used for conductive lines on circuit boards
What is Fullerine used for in electronics
used to make low power memory devices for computers
How does nanoglue influence electronics
transmits heat from the computer chip
What are nanowires used for in electronics
flexible and extremely thin display screens made from graphene and nanowires
Environment effects of nanotechnology:
- Low cost low power lighting: Quantum dots that absorb light of a particular colour, and emit it again as another colour
- Carbon nanofiber sponges: clean up ocean oil spills
- Graphene to make flexible low coat solar panels –provides 1000 times more power per square meter than current panels
Sporting equipmen made from nanomaterialst
- Carbon nanotubes – bicycle frames
- Titanium nanoparticles – bicycle frames
- Tennis raquets
