What is a dielectric?

Generally speaking, the commonly used dielectrics in photoelectric devices are those materials that are non-conductive but transparent and have special photoelectric functions. Dielectric materials contain extremely rich properties, such as piezoelectric, ferroelectric, electro-optical, nonlinear optics and so on. Reasonable selection and design of dielectric materials and their devices.

Liquid crystal for flat panel display is dielectric; Neodymium glass, ruby, etc. Generating laser, which is dielectric body; Lithium niobate, an electro-optical material for regulating information, is a dielectric; An optical disk for storing information is a dielectric. Especially, the optical fiber that transmits more than 80% information in the world is dielectric. Just like the semiconductor materials supporting the microelectronics industry, dielectrics have become one of the most important basic materials of optoelectronics.

Conventional power consumption of 220V or 380V and 50Hz generates high-voltage and high-frequency current of 20 ~ 30 kV and 15 ~ 20~30kV through a thyristor circuit, which acts on a pair of electrodes separated by a dielectric (usually timely) to form a silent diffused blue-purple glow discharge. This electrostatic field can adsorb and remove dust, oil pollution, water vapor, etc.