To avoid interference between transmitters operating in the same geographical area or on adjacent channels, it is essential that frequency be accurately controlled. As demand for space on the available radio-frequency spectrum grows, spacing between assigned frequencies has become tighter. Piezoelectric crystals typically resonate within narrowly defined frequency ranges and when suitably mounted they can be used in electric circuits as components of highly selective filters or as frequency-control devices for very stable oscillators. Conversely, when an alternating electric current is applied to opposite faces of a piezoelectric crystal, the crystal expands and contracts in concert with the alternating electric current.
Today, this phenomenon is referred to as the piezoelectric effect. In 1980 the Curie brothers observed that when a permanently polarized material is subjected to a mechanical force an electric field is produced. The present invention relates to the field of quartz plate oscillators, and, more specifically, to a method for determining angles of cuts that produce quartz plates having low shifts in frequency as a function of temperature, and the manipulation of that method to reduce the effects of other electrical components.
23, 2002, which is a Continuation-in-Part of U.S. We are also willing to look for long term partners who are a distributor or wholesaler specialized in fused quartz glass in local.įor prompt quotation, please contact us at below form.This application is a Divisional of U.S. It is an excellent electrical insulating material and has good electrical properties even under high temperature.Īs a leading China fused quartz glass supplier and manufacturer, we are providing best price as well as quality for all kinds of customized fused quartz products. Resistance value of quartz glass equaling to 10000 times of ordinary glass. The electrical insulation performance is good. Especially in the ultraviolet spectrum band and the maximum transmittance is over 85%.ĥ. The transmittance of the visible light is above 95%. Quartz glass has good transmittance in the whole spectral band from ultraviolet to infrared. And it can withstand severe temperature changes such that heating up to 1100℃ and putting it in normal temperature water will not crack.Ĥ. Thermal expansion coefficient is extremely small. Especially, any other material cannot make a comparison with chemical stability of fused quartz at high temperatureģ.
Its acid resistance is 30 times as ceramic, 150 times as stainless steel. In addition to hydrofluoric acid, fused quartz glass is inert to other acids. The softening point of fused quartz glass is about 1730℃ and can be used for long time working under 1100℃~1250℃.
#QUARTZ ZERO BACKGROUND PLATES SERIES#
Quartz glass has a series of excellent physical and chemical properties.ġ. We use specialized laminating machine to do packing for each plate, aim to keep each of quartz plate intact.įused quartz glass is a special industrial glass made of silicon dioxide. To this thickness quartz plates, package is also quite importent. Using high-tech laser cutting make edge lowest breakage. Our company has ability to custom super thin quartz plates(JGS1 or JGS2) with high optical transparency. Description 0.1mm to 0.15mm Thickness Quartz Plates Customization
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