U4 - Nanotechnology

Question 1

Def: Nanotechnology

Answer 1

it’s the production of very small materials

Question 2

Def: Nanomaterials

Answer 2

materials that are very small that range in size between 1 and 100 nm

Question 3

Eg. Of nanomaterials

Answer 3

graphene

Question 4

What is graphene

Answer 4

layer of carbon that is 1 atom tick in graphite structure. 1 sheet that makes up graphite

Question 5

What are the properties of graphene

Answer 5

• Strong
• Light
• Durable
• good electrical conductors
• good heat conductors
• almost transparent

Question 6

What is Fullerine

Answer 6

an allotrope of carbon

Question 7

Fullerine characteristics

Answer 7

• stable
• soluble at room temperature
• superconductors

Question 8

what does some fullerine form

Answer 8

Some of the fullerines form hollow open ended tubes = carbon nanotubes

Question 9

Properties of carbon nanotubes

Answer 9

• High tensile strength (100 x as strong as steel)
• High heat conductivity
• Ductile
• Chemically inert (unreactive)

Question 10

How do people make ruby red tinted glass

Answer 10

Gold nanoparticles trapped in glass gives the glass a ruby red colour

Question 11

How is yellow stained glass made

Answer 11

Silver nanoparticles trapped in glass gives the glass a yellow colour

Question 12

What are silver nanoparticles used for

Answer 12

used in medical procedures and devices – antimicrobial agents

Question 13

How is Silver nanotechnology used medically

Answer 13

Antimicrobial coatings on bandages, soaps and surgical
Instruments

Question 14

How is gold nanotechnology used as medicine

Answer 14

carry chemotherapy drugs directly to
cancer cells

Question 15

How does hollow buckminister fullerene contribute to health

Answer 15

carry drugs in the hollow, used to deliver drugs to exactly where they are needed in the body

Question 16

How does nano-materials influence electronics

Answer 16

Makes electronic equipment ligher, cheaper, and more power efficient.

Question 17

What is Silver nano-particle ink used for in electronics

Answer 17

used for conductive lines on circuit boards

Question 18

What is Fullerine used for in electronics

Answer 18

used to make low power memory devices for computers

Question 19

How does nanoglue influence electronics

Answer 19

transmits heat from the computer chip

Question 20

What are nanowires used for in electronics

Answer 20

flexible and extremely thin display screens made from graphene and nanowires

Question 21

Environment effects of nanotechnology:

Answer 21

• 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

Question 22

Sporting equipmen made from nanomaterialst

Answer 22

• Carbon nanotubes – bicycle frames
• Titanium nanoparticles – bicycle frames
• Tennis raquets