Flashcards
Modern and smart materials
Flashcards do conjunto (14)
- 1What are piexoelectric crysals?The controll method in printer.
The expand and contract when curent is passed along them.
Can convert between physical and electrical signals. (vibration & tention) - 2What are thermo cromic liquid crystals?Crystals that react to temperiture and change colour.
- 3Why are Thermochromic crystals usefull? Where are they used?Thyey can show tmperiture changes using colour aids.
Thermomiters, pizza boxes, beer cans (course light) - 4Why are piezoelectric crystals usefull? Where are they used?They controll the amount of ink released into a printer by expanding or contraction gdepending on the curent passing through it.
- 5What is smart ink?Display technology that mimicks the apearence of ordinary paper printing. (kindle in colour)
Reflects light rather than just project it. - 6Whaty is smart ink usefull for? Where is it used?Used to overcome ristrictions of computer monitors.
Being developed for ebooks. - 7What is radio frequncy identification. (RFID)Tags in shops have internal systems that can be used for identification using a reader.
Used to track paletts of prodicts from manufacturer to retailer. - 8What is a smart material?They respond to light or tempriture and change because of it.
They seem to have a 'memory' so will revert back to how they were before when input is removed. - 9What are phosphorescent pigments?'After Glow' / glow in the dark materials that absorb energy in daytime and release it overtime as light when in the dark.
- 10Why are phosphorecent pignments usefull? Where are they used?They can be seen in compleet darkness.
Safety signs and watch faces. - 11What er Liquid crystal displays? (LCD)Organ, carbon compounds.
Has liquid and crystal properties.
Low energy and curent uses. - 12Why are LCDs usefull? Where are they used?They take a very low amount of curent to run them.
Ideal for portable screens; mobile phones. - 13What is Elecroluminescent lighing?A voltage crossed over electrodes to make a continuouse light.
(the Sony sign) - 14Why is elecroluminecint lighting usefull? Where are they used?Low power consumption.
Waterproof, reliable and highly visible.
Used as phone backpight and in advertising displays to make an impact.
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- A-Levels product design FlashCards sobre Modern and smart materials, criado por B G em 26-04-2013.
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- B G
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