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A new approach to glass formation

17.03.2018

It is known that lightning and volcanoes have one similar feature - they can create glass. This is exactly what people have used in their observations, creating glass from silicon dioxide since the most ancient times, but later industrialization taught us how to make it based on boron, polymers and metals. However, an international team of researchers has created a new family of glass based on metals and organic compounds, which, when combined, almost completely mimic the behavior of silicon in the formation of glass, while devoid of its main disadvantages, such as rapid crystallization and a sharp drop in temperature.

Glass itself is a liquid frozen as a solid material in nanocrystalline form, where it is very important to quickly defeat the crystallization process - this is traditionally used for rapid cooling. However, the specialists decided to go even further and replace silicon with zinc, which is also located at the crystalline level as a tetrahedral compound, like silicon. But unlike the silicon compound, where oxygen atoms are located on the sides, the zinc project uses imidazolate and benzimidazolate atoms - specially derived molecules that replace oxygen.

Thus, experts have developed a special zinc alloy called ZIF-62, whose properties cannot but surprise. In particular, it requires a much shorter cooling session and a lower temperature in order to avoid the crystallization process and thereby form glass, and this makes the process somewhat cheaper.

An article with the positive results of the project has already been published in the scientific journal Science Advances, where experts explained all the subtleties associated with the application of this new method in glass formation. Of course, they still have to conduct some more tests and experiments in order to discover potential vulnerabilities and new features of the zinc compound, but they are confident that the new method will make the glass formation process much easier and cheaper in the very near future.

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Random news from the Archive

hot imprint 02.12.2006

A new method for detecting fingerprints, which allows finding these traces on metal heated to 600 degrees Celsius, was proposed by employees of the University of Wales in Swansea (UK).

The slightest amount of sweat contained on the fingers causes micro-corrosion of metal, such as grenades, cartridge or shell casings, or explosive device shells. An electrochemical reaction with sweat as an electrolyte causes persistent changes in the electric potential of metal atoms that last up to several years. The probe of a special scanning electron microscope, which measures the slightest changes in the electrical potential of the metal surface, builds a three-dimensional image of fingerprints.

A new method to identify those who loaded a weapon or prepared an explosive device "works" on surfaces made of steel, iron, zinc, brass and aluminum, including curved surfaces.

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