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DT Paper 1 > Smart materials > Flashcards

Smart materials Flashcards

1
Q

Smart material

A

Reacts to changes in its environment

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2
Q

Electroluminescent wire

A

Thin and Flexible
Glows brightly when an alternating current passes
Eg; glow bracelets, home decoration

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3
Q

SMA (Shape memory alloy)

A

Changes shape in response to a change in temperature or electrical input
Also ‘remembers’ original shape
Eg; dental braces, aeroplane wing flaps

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4
Q

Thermochromic pigment

A

Changes colour in response to temperature change

Eg; room thermometers, baby feeding spoons

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5
Q

Phosphorent pigment

A

Absors light energy during the day and re-emits the light energy when dark
Eg; fire exit signs, night light

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6
Q

Photochromic pigment

A

Changes colour with light intensity

Eg; welding goggles, reactive spectacle lenses

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7
Q

Piezoelectric material

A

Gives off a small electrical charge when deformed and increases in size
Eg; airbag sensors, pressure sensors

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DT Paper 1 (12 decks)

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