Smart Materials Flashcards
1
Q
State all the smart material types.
A
- phosphorescent
- thermochromic
- piezoelectric
- photochromic
2
Q
How do thermochromic pigments work?
A
Hot and cold temperatures triggers a change of colour.
3
Q
What are thermochromic pigments used in?
A
- room thermometers
- children’s cutlery
- novelty goods and colour changing clothing
4
Q
How do photochromic pigments work?
A
Uv light stimulates particles in a special pigment
5
Q
Where are photochromic pigments used?
A
- novelty goods
- colour changing paints
- sunglasses
6
Q
How do piezoelectric materials work?
A
Generate a small electric charge when sensors are compressed.
7
Q
What are piezoelectric materials used in?
A
- generating electricity
- keyless car entry
- seat belt alarm
8
Q
What are shaped memory alloys?
A
These are metal alloys that can remember their shape when heated.
9
Q
What is shaped memory alloy used in?
A
- glasses frames
- medical stents
- braces
10
Q
What are the uses of quantum tunnelling composite?
A
- computers
- mobile phones
11
Q
State all the smart material stimuli.
A
Stress
Temperature
Moisture
pH
Electric or magnetic fields
UV light
