Smart and Modern Materials Flashcards
For a material to be considered smart it must be able to __________ and repeatedly change its physical properties when exposed to a specific stimuli.
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.
For a material to be considered smart it must be able to reversibly and __________ change its physical properties when exposed to a specific stimuli.
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.
For a material to be considered smart it must be able to reversibly and repeatedly change its ________ properties when exposed to a specific stimuli.
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.
For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when ________ to a specific stimuli.
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.
For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when exposed to a ________ stimuli.
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.
For a material to be considered smart it must be able to reversibly and repeatedly change its physical properties when exposed to a specific _______.
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.
Shape memory alloys are abbreviated to .._.s
Shape memory alloys are abbreviated to S.M.A.s
the smart material SMA stands for _ _ _
the smart material SMA stands for SHAPE MEMORY ALLOY
SMA smart materials are those which revert back to their original shape when they _ _ _ _ _
SMA smart materials are those which revert back to their original shape when they REACH A CERTAIN (TRANSITION) TEMPERATURE
When SMA smart materials reach their transition temperature, they _ _ _ _ _
When SMA smart materials reach their transition temperature, they REVERT TO THEIR ORIGINAL SHAPE
The temperature at which SMA. smart materials revert to their original shape is known as the _ _
The temperature at which SMA. smart materials revert to their original shape is known as the TRANSITION TEMPERATURE
Three top examples of SMA smart material products are:
Three top examples of SMA smart materials are:
FLEXIBLE SPECTACLES
KETTLE THERMOSTATS
ARTERY STENTS
QTC smart materials stands for …
QTC smart materials stands for QUANTUM TUNNELLING COMPOSITES
QTC smart materials consist of…
QTC smart materials consist of A FLEXIBLE POLYMER
QTC smart materials are a flexible polymer which perfectly ____________ insulates until bent.
QTC smart materials are a flexible polymer which perfectly ELECTRICALLY insulates until bent.
QTC smart materials are a flexible polymer which perfectly electrically __________ until bent.
QTC smart materials are a flexible polymer which perfectly electrically INSULATES until bent.
When a QTC smart material is bent, the flexible polymer becomes extremely ___________ conductive.
When a QTC smart material is bent, the flexible polymer becomes extremely ELECTRICALLY conductive.
When a QTC smart material is bent, the flexible polymer becomes extremely electrically ___________.
When a QTC smart material is bent, the flexible polymer becomes extremely electrically CONDUCTIVE.
When QTC smart materials are flexed and electrically conductive they are able to support extremely high _________ for their size.
When QTC smart materials are flexed and electrically conductive they are able to support extremely high CURRENTS for their size.
When QTC smart materials are flexed and electrically conductive they are able to support extremely ___ currents for their size.
When QTC smart materials are flexed and electrically conductive they are able to support extremely HIGH currents for their size.
Thermo-ceramics are a type of _____ material.
Thermo-ceramics are a type of SMART material.
Thermo-ceramic smart materials are often created through the process of _________ metal and ceramic powders.
Thermo-ceramic smart materials are often created through the process of SINTERING metal and ceramic powders.
Thermo-ceramic smart materials are made from extremely ____ powders.
Thermo-ceramic smart materials are made from extremely FINE powders.
Thermo-ceramic smart materials characteristics are:
Thermo-ceramic smart materials characteristics are:
EXTREMELY HARD
HEAT RESISTANT
Thermo-ceramic smart materials crystalline structure is….
Thermo-ceramic smart materials crystalline structure is EXTREMELY FINE AND HOMOGENOUS
Examples of thermo-ceramic smart material products are:
Examples of thermo-ceramic smart material products are:
TURBO-CHARGERS
JET ENGINE BLADES
SPACEFLIGHT
Due to the _______ of thermo-ceramics, they are extremely brittle.
Due to the HARDNESS of thermo-ceramics, they are extremely brittle.
Due to the hardness of thermo-ceramics, they are extremely _______.
Due to the hardness of thermo-ceramics, they are extremely BRITTLE.
Photochromic materials change ______ with changes in UV light intensity.
Photochromic materials change COLOUR with changes in UV light intensity.
Photochromic materials change colour with changes in __ ______ intensity.
Photochromic materials change colour with changes in UV LIGHT intensity.
Photochromic materials are usually __________ until exposed to UV light.
Photochromic materials are usually COLOURLESS until exposed to UV light.
Photochromic materials can appear to change colour when the pigment is _____ with an existing base colour.
Photochromic materials can appear to change colour when the pigment is MIXED with an existing base colour.
Reactive glass responds extremely quickly to ___________ ________ to change colour rather than a slow change to UV light.
Reactive glass responds extremely quickly to ELECTRONIC CURRENTS to change colour rather than a slow change to UV light.
Reactive glass is most often used for _ and _
Reactive glass is most often used for HIGH END WINDOWS and WELDING MASKS
In reactive glass even a _____ _______ can significantly darken the glass and reduce light transmission.
In reactive glass even a SMALL CURRENT can significantly darken the glass and reduce light transmission.
Reactive glass darkens _________ or ______________ to the current applied, and so can give a fade effect.
Reactive glass darkens GRADUALLY or PROPORTIONALLY to the current applied, and so can give a fade effect.
Reactive glass is ____ expensive than photochromic-pigmented glass
Reactive glass is MORE expensive than photochromic-pigmented glass
LCD screens is the abbreviation of…
LCD screens is the abbreviation of LIQUID CRYSTAL DISPLAY screens.
LCDs are _____ compounds which reversibly solidify under the application of small currents.
LCDs are CARBON compounds which reversibly solidify under the application of small currents.
LCDs are carbon compounds which reversibly solidify under the application of _____ _______.
LCDs are carbon compounds which reversibly solidify under the application of SMALL CURRENTS.
LCDs turn black (or another particular colour) when a ________ is applied.
LCDs turn black (or another particular colour) when a VOLTAGE is applied.
LCDs are only recently being replaced by ____ screens
LCDs are only recently being replaced by OLED screens
OLEDs are replacing ____ where as non-organic LEDs consume too much power to reasonably replace them.
OLEDs are replacing LCDs where as non-organic LEDs consume too much power to reasonably replace them.
Thermo-chromic changes _____ based on the surrounding ___________
Thermo-chromic changes COLOUR based on the surrounding TEMPERATURE
Thermo-chromic pigment is often used in ____________ and for baby products where the temperature of food and water is vital.
Thermo-chromic pigment is often used in THERMOMETERS and for baby products where the temperature of food and water is vital.
Thermo-chromic pigment is often used in thermometers and for ____ products where the temperature of food and water is vital.
Thermo-chromic pigment is often used in thermometers and for BABY products where the temperature of food and water is vital.
Thermo-chromic pigments need to be _____ into paints, fabrics, plastics or papers to work.
Thermo-chromic pigments need to be MIXED into paints, fabrics, plastics or papers to work.
SMAs return to old shape under what?
-F.W
Specific Temperatures.
Quantum Tunnelling Composites need to be what? To reduce resistance.
-F.W
Compressed.
Biggest weakness of thermo-ceramics?
-F.W
Very brittle.
In-labs example of reactive glass?
-F.W
Welding mask.
Photochromic paints are triggered by what?
-F.W
UV light.
