crystal electric field
21liquid crystal display — n. LCD * * * ▪ electronics Introduction electronic display device that operates by applying a varying electric voltage to a layer of liquid crystal, thereby inducing changes in its optical properties. LCDs are commonly used for portable… …
22Pyroelectric crystal — Pyroelectric crystals are crystals that generate electricity when heated. It is similar to piezoelectricity.Crystal symmetryCrystal structures can be divided into 32 classes, or point groups, according to the number of rotational axes and… …
23Twisted nematic field effect — The twisted nematic effect ( TN effect ) in liquid crystals is claimed to be first discovered by James Fergason in 1970 at the International Liquid Xtal Company in Kent Ohio. Fergason patented his work at about the same time that the Central… …
24Nonlinear photonic crystal — Nonlinear photonic crystals are usually used as quasi phase matching materials. They can be either one dimensional[1] or two dimensional.[2] Nonlinear Photonic Crystals Broadly speaking, nonlinear photonic crystals (PC) are periodic structures… …
25Photonic crystal — The opal in this bracelet contains a natural periodic microstructure responsible for its iridescent color. It is essentially a natural photonic crystal, although it does not have a complete photonic band gap. Photonic crystals are periodic… …
26Organic field-effect transistor — OFET based flexible display An organic field effect transistor (OFET) is a field effect transistor using an organic semiconductor in its channel. OFETs can be prepared either by vacuum evaporation of small molecules, by solution casting of… …
27liquid crystal display — noun a digital display that uses liquid crystal cells that change reflectivity in an applied electric field; used for portable computer displays and watches etc. • Syn: ↑LCD • Hypernyms: ↑digital display, ↑alphanumeric display • Hyponyms: ↑active …
28Polymeric liquid crystal — Polymeric liquid crystals are similar to monomeric liquid crystals used in displays. Both have dielectric anitroscopy, or the ability to change directions and absorb or transmit light depending on electric fields. Polymeric liquid crystals form… …
29liquid crystal — liq′uid crys′tal n. opt phs elo a liquid having certain crystalline characteristics, esp. different optical properties in different directions when exposed to an electric field, used in electronic displays • Etymology: 1890–95 …
30Quartz crystal microbalance — A quartz crystal microbalance (QCM) measures a mass per unit area by measuring the change in frequency of a quartz crystal resonator. The resonance is disturbed by the addition or removal of a small mass due to oxide growth/decay or film… …
