How smart ink works- smart material
Each pixel point cotains black beads (negativly charged) and White beads (positively charged). Each pit is topped with a tranaperent electrode and has two other electrodes at its base. Altering the charge on the base electrodes makes either the white or black beads leap to the top. forming either a blank or black spot on the larger display, Mkaing one base electrode positive and the other negative creates a grey spot.
Radio frequency identification- Smart material
The transmitter sends signals to the transponder: The transponder then transmits a resonse signal that is recieived by the transmitter. The information from the transmitter can be used to identify the transponder and any item it is attached too.
Thermochromic liquid crystals-smart materials
Senses heat from the body
Coductive ink > forhead >Tempreture gauge colour bars > Thermochromic layer. By presssing the thermomoter to the forhead, the tempreture generated turns the thermochromic ink translucent. This reveals the tempreture generated turns the thermochric ink translucent.
Piezoelectric crystals- Smart material-
A piezoelectric crystal is a material that expands and contracts when electric current is applied. The piezoelectric effect converts this mechanical stress or vibration into electrical signals and vice versa.
Liquid crystal displays (LCD)- Modern material-
A cell containing a liquid crystal has a voltage applied, and on which it appears to to go 'dark'. This caused by the molecular rearrangement within the liquid cystal. The LCD has a pattern of conducting electrodes that is capable of displaying numbers via 7 segments. These are then made to appear by applying voltage to the different segments, which turn dark in relation to the silvered backround.
Phosphorescent pigments- modern material
Absorb energy during the daytime conditions and are capable of storing that energy for some time, then releasing it relatively slowly in the form of light.
Electroluminescent lighting- modern material-
Electrolimiinescient lighting converts electrical energy into light energy by applying a voltage across electrodes-
An organic phosphor is sandwhiched between two conductors and the electric current is applied. The charged phosphor crystals emit readiation in the form of visable light.