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Russian supplier of glass for the Apple Watch has grown the world’s first 300-pound sapphire crystal

The world’s first three hundred kilograms of crystal synthetic sapphire grown in Russia modified using the kyropoulos method, said Tuesday the state Corporation “RUSNANO”. Crystal grew up in “single crystal”, which supplies sapphire glass for the Apple Watch.

Method kyropoulos traditionally used for growing high-quality synthetic sapphires, because it is more suited to large-scale serial production. Its essence lies in a smooth decrease of the temperature of crystallization of the melt of aluminum oxide around the seed crystal in a vacuum. The cooled priming becomes the basis for the future of sapphire crystal and is extruded from the melt as the crystal growth.

A modification of the method of kyropoulos on its own technology allowed “single Crystal” to increase the maximum possible weight of produced sapphires up to 300 pounds.

Sapphire is the second hardest material after diamond and is an artificially grown crystal, widely used in microelectronics, optoelectronics, optics, mechanical engineering and instrument making, medicine, for the manufacture of “naturapath” glasses of different shapes, and in the manufacture of blue semiconductor lasers for systems requiring high data density, for example, modern game consoles, iPods format Blue-ray and other devices like HD-DVD. Sapphire is the basic material for the production of LEDs.

“The emergence of very large crystals in the future will allow us to significantly reduce costs and open new markets that are price sensitive. 300-pound crystals derive the scalability of our production on a revolutionary level, a key factor for the start of a broader use of sapphire in smartphones and other mobile devices that traditionally use hardened glass,” – said the “Crystal”.

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Last month it became known that the “single crystal” is one of the main suppliers of two-inch sapphire wafer, which is made from heavy-duty panel displays for Apple Watch and Apple Watch Edition. Industry observers believe that the Russian company was in a favorable position due to the depreciation of the local currency. It offers a four-inch sapphire wafers that comprise 60% of deliveries at a more attractive price than the competitors. Monocrystal is a portfolio company of RUSNANO.

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