Smart and Modern Materials

Question 1

what are thermo ceramics

Answer 1

materials that can resist high temps whilst maintaining shape

Question 2

examples of thermo ceramics

Answer 2

• turbines in jet engines
• turbo charges for racing cars

Question 3

disadvantage of thermo ceramics

Answer 3

they can be britlle and break if dropped

Question 4

What are shape memory alloys

Answer 4

metals that can be flexed and bent but when heated return to its natural shape.

Question 5

examples of shape memory alloys

Answer 5

sprinklers in fire alarms, hot water valves for showers.

Question 6

What is reactive glass

Answer 6

A glass that changes from clear to dark when in contact with a specific external stimulus.

Question 7

examples

Answer 7

• masks for electric ark welding

Question 8

what are liquid crystal displays

Answer 8

they are organic carbon based compounds.

Question 9

What are photo chromic materials

Answer 9

materials that change colour when exposed to light

Question 10

examples of photo chromic materials

Answer 10

security markers, ultraviolet light warnings.

Question 11

what are thermochromic materials

Answer 11

materials that change colour due to heat.

Question 12

examples of thermochromic materials

Answer 12

food packaging - to show you if the food it contains is cooked to the right temperature.

Question 13

What are quantum tunnelling composites ?

Answer 13

materials that when in a relaxed state they are an insulator, but when in a stretches/ compressed state turn into an conductor.

Question 14

examples of quantum tunnelling composites ?

Answer 14

fencing jackets, computer mice to give increased sensitivity for greater controll.