Smart Materials

Question 1

Shape memory alloys

Answer 1

-Changes shape in response to change in temperature or electrical input
- Dental braces

Question 2

Thermochromic Pigment

Answer 2

• Changes colour in response to temperature change
  -medical thermometers, baby feeding spoons

Question 3

Phosphorescent pigment

Answer 3

• Absorbs light energy and re-emits the energy when it gets dark
  -Fire exit signs

Question 4

Photochromic pigment

Answer 4

-changes colour in response to light intensity
- Reactive glasses lenses ( get darker the brighter it is)

Question 5

Electroluminescent wire

Answer 5

-Thin copper wire coated in low electrical current material
- lights on aeroplane floor

Question 6

Piezoelectric Material

Answer 6

-Gives off small electrical current when deformed
-Musical greeting cards, pressure sensors