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Design A-level > Smart and Modern Materials > Flashcards

Smart and Modern Materials Flashcards

1
Q

For a material to be considered smart it must be able to __________ and repeatedly change its physical properties when exposed to a specific stimuli.

A

For a material to be considered smart it must be able to REVERSIBLY and repeatedly change its physical properties when exposed to a specific stimuli.

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2
Q

For a material to be considered smart it must be able to reversibly and __________ change its physical properties when exposed to a specific stimuli.

A

For a material to be considered smart it must be able to reversibly and REPEATEDLY change its physical properties when exposed to a specific stimuli.

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3
Q

For a material to be considered smart it must be able to reversibly and repeatedly change its ________ properties when exposed to a specific stimuli.

A

For a material to be considered smart it must be able to reversibly and repeatedly change its PHYSICAL properties when exposed to a specific stimuli.

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4
Q

For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when ________ to a specific stimuli.

A

For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when EXPOSED to a specific stimuli.

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5
Q

For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when exposed to a ________ stimuli.

A

For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when exposed to a SPECIFIC stimuli.

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6
Q

For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when exposed to a specific _______.

A

For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when exposed to a specific STIMULI.

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7
Q

Shape memory alloys are abbreviated to .._.s

A

Shape memory alloys are abbreviated to S.M.A.s

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8
Q

the smart material SMA stands for _ _ _

A

the smart material SMA stands for SHAPE MEMORY ALLOY

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9
Q

SMA smart materials are those which revert back to their original shape when they _ _ _ _ _

A

SMA smart materials are those which revert back to their original shape when they REACH A CERTAIN (TRANSITION) TEMPERATURE

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10
Q

When SMA smart materials reach their transition temperature, they _ _ _ _ _

A

When SMA smart materials reach their transition temperature, they REVERT TO THEIR ORIGINAL SHAPE

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11
Q

The temperature at which SMA. smart materials revert to their original shape is known as the _ _

A

The temperature at which SMA. smart materials revert to their original shape is known as the TRANSITION TEMPERATURE

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12
Q

Three top examples of SMA smart material products are:

A

Three top examples of SMA smart materials are:
FLEXIBLE SPECTACLES
KETTLE THERMOSTATS
ARTERY STENTS

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13
Q

QTC smart materials stands for …

A

QTC smart materials stands for QUANTUM TUNNELLING COMPOSITES

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14
Q

QTC smart materials consist of…

A

QTC smart materials consist of A FLEXIBLE POLYMER

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15
Q

QTC smart materials are a flexible polymer which perfectly ____________ insulates until bent.

A

QTC smart materials are a flexible polymer which perfectly ELECTRICALLY insulates until bent.

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16
Q

QTC smart materials are a flexible polymer which perfectly electrically __________ until bent.

A

QTC smart materials are a flexible polymer which perfectly electrically INSULATES until bent.

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17
Q

When a QTC smart material is bent, the flexible polymer becomes extremely ___________ conductive.

A

When a QTC smart material is bent, the flexible polymer becomes extremely ELECTRICALLY conductive.

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18
Q

When a QTC smart material is bent, the flexible polymer becomes extremely electrically ___________.

A

When a QTC smart material is bent, the flexible polymer becomes extremely electrically CONDUCTIVE.

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19
Q

When QTC smart materials are flexed and electrically conductive they are able to support extremely high _________ for their size.

A

When QTC smart materials are flexed and electrically conductive they are able to support extremely high CURRENTS for their size.

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20
Q

When QTC smart materials are flexed and electrically conductive they are able to support extremely ___ currents for their size.

A

When QTC smart materials are flexed and electrically conductive they are able to support extremely HIGH currents for their size.

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21
Q

Thermo-ceramics are a type of _____ material.

A

Thermo-ceramics are a type of SMART material.

22
Q

Thermo-ceramic smart materials are often created through the process of _________ metal and ceramic powders.

A

Thermo-ceramic smart materials are often created through the process of SINTERING metal and ceramic powders.

23
Q

Thermo-ceramic smart materials are made from extremely ____ powders.

A

Thermo-ceramic smart materials are made from extremely FINE powders.

24
Q

Thermo-ceramic smart materials characteristics are:

A

Thermo-ceramic smart materials characteristics are:
EXTREMELY HARD
HEAT RESISTANT

25
Q

Thermo-ceramic smart materials crystalline structure is….

A

Thermo-ceramic smart materials crystalline structure is EXTREMELY FINE AND HOMOGENOUS

26
Q

Examples of thermo-ceramic smart material products are:

A

Examples of thermo-ceramic smart material products are:
TURBO-CHARGERS
JET ENGINE BLADES
SPACEFLIGHT

27
Q

Due to the _______ of thermo-ceramics, they are extremely brittle.

A

Due to the HARDNESS of thermo-ceramics, they are extremely brittle.

28
Q

Due to the hardness of thermo-ceramics, they are extremely _______.

A

Due to the hardness of thermo-ceramics, they are extremely BRITTLE.

29
Q

Photochromic materials change ______ with changes in UV light intensity.

A

Photochromic materials change COLOUR with changes in UV light intensity.

30
Q

Photochromic materials change colour with changes in __ ______ intensity.

A

Photochromic materials change colour with changes in UV LIGHT intensity.

31
Q

Photochromic materials are usually __________ until exposed to UV light.

A

Photochromic materials are usually COLOURLESS until exposed to UV light.

32
Q

Photochromic materials can appear to change colour when the pigment is _____ with an existing base colour.

A

Photochromic materials can appear to change colour when the pigment is MIXED with an existing base colour.

33
Q

Reactive glass responds extremely quickly to ___________ ________ to change colour rather than a slow change to UV light.

A

Reactive glass responds extremely quickly to ELECTRONIC CURRENTS to change colour rather than a slow change to UV light.

34
Q

Reactive glass is most often used for _ and _

A

Reactive glass is most often used for HIGH END WINDOWS and WELDING MASKS

35
Q

In reactive glass even a _____ _______ can significantly darken the glass and reduce light transmission.

A

In reactive glass even a SMALL CURRENT can significantly darken the glass and reduce light transmission.

36
Q

Reactive glass darkens _________ or ______________ to the current applied, and so can give a fade effect.

A

Reactive glass darkens GRADUALLY or PROPORTIONALLY to the current applied, and so can give a fade effect.

37
Q

Reactive glass is ____ expensive than photochromic-pigmented glass

A

Reactive glass is MORE expensive than photochromic-pigmented glass

38
Q

LCD screens is the abbreviation of…

A

LCD screens is the abbreviation of LIQUID CRYSTAL DISPLAY screens.

39
Q

LCDs are _____ compounds which reversibly solidify under the application of small currents.

A

LCDs are CARBON compounds which reversibly solidify under the application of small currents.

40
Q

LCDs are carbon compounds which reversibly solidify under the application of _____ _______.

A

LCDs are carbon compounds which reversibly solidify under the application of SMALL CURRENTS.

41
Q

LCDs turn black (or another particular colour) when a ________ is applied.

A

LCDs turn black (or another particular colour) when a VOLTAGE is applied.

42
Q

LCDs are only recently being replaced by ____ screens

A

LCDs are only recently being replaced by OLED screens

43
Q

OLEDs are replacing ____ where as non-organic LEDs consume too much power to reasonably replace them.

A

OLEDs are replacing LCDs where as non-organic LEDs consume too much power to reasonably replace them.

44
Q

Thermo-chromic changes _____ based on the surrounding ___________

A

Thermo-chromic changes COLOUR based on the surrounding TEMPERATURE

45
Q

Thermo-chromic pigment is often used in ____________ and for baby products where the temperature of food and water is vital.

A

Thermo-chromic pigment is often used in THERMOMETERS and for baby products where the temperature of food and water is vital.

46
Q

Thermo-chromic pigment is often used in thermometers and for ____ products where the temperature of food and water is vital.

A

Thermo-chromic pigment is often used in thermometers and for BABY products where the temperature of food and water is vital.

47
Q

Thermo-chromic pigments need to be _____ into paints, fabrics, plastics or papers to work.

A

Thermo-chromic pigments need to be MIXED into paints, fabrics, plastics or papers to work.

48
Q

SMAs return to old shape under what?

-F.W

A

Specific Temperatures.

49
Q

Quantum Tunnelling Composites need to be what? To reduce resistance.

-F.W

A

Compressed.

50
Q

Biggest weakness of thermo-ceramics?

-F.W

A

Very brittle.

51
Q

In-labs example of reactive glass?

-F.W

A

Welding mask.

52
Q

Photochromic paints are triggered by what?

-F.W

A

UV light.

Design A-level (30 decks)

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