dielectrics
Synonyms
Examples
If dielectrics other than an oxide such as silicon dioxide (often referred to as oxide) are employed the device may be referred to as a metal–insulator–semiconductor FET (MISFET).
Further technology advances that use even thinner gate dielectrics have an additional leakage component because of current tunnelling through the extremely thin gate dielectric.
At the plasma frequency and above, dielectrics behave as ideal metals, with electron gas behavior.
For some dielectrics, such as many polymer films, the resulting voltage may be less than 1-2% of the original voltage.
In particular, at extremely large frequencies (above the plasma frequency ), metals become transparent to photons (such as X-rays ), and dielectrics show a frequency-dependent cutoff as well.
It is also used to produce other barium chemicals, notably barium carbonate which is used for the manufacture of LED glass for television and computer screens ( historically in cathode ray tubes); and for dielectrics.