Abstract Diamond, which is known as the “king of hardness”, also has a “fragile” side: as a crystalline material, the regular arrangement of atomic structures leads to a strong directionality. In other words: some direction hardness...
Diamond, known as the "King of Hardness", also has a "fragile" side: as a crystalline material, the regular arrangement of atomic structures leads to a strong directionality. In other words: some directions are particularly hard, while others are relatively weak. The team of researcher Zeng Zhengdan from the Beijing High Voltage Research Center recently synthesized a new type of carbon material with atomic disorder. Glassy diamonds make up for this shortcoming of traditional diamonds. The hardness of the material can be as high as diamond, the properties in all directions can be very uniform, or it can become a new material that is “invulnerable”. Related research results were recently published in the journal Nature News.
Zeng Zhengdan said in an interview with the Science and Technology Daily on the 3rd that the arrangement of carbon atoms is very flexible. It can be like building blocks, different arrangement and combination, and can form various carbon materials with different performance and structure. Diamond and graphite are typical examples. This property of carbon atoms also gives great exploration space for finding new carbon materials.
Known as "diamond", diamond is the hardest natural material in nature, with the highest thermal conductivity and high melting point and visible light refractive index. These excellent properties are mainly due to the extremely high chemical bond formed by each carbon atom in the interior and the adjacent four carbon atoms, and the "disadvantages" are mostly from the regular neat (crystalline) atomic arrangement resulting in the direction of the property. Uneven on the top. Is there a way to make up for this shortcoming?
Recently, Zeng Zhengdan team first synthesized blocky glassy diamond at about 500,000 atmospheres and 1500 degrees Celsius. This new material has the same internal chemical bonds as traditional diamonds, and it also has a "glass heart" - the internal atomic arrangement proved to be highly disordered. Therefore, it has the same high strength as diamond, and it is uniform in any direction like glass. It is expected to become the strongest known glass material.
The advent of the "glass heart" diamond also gives you a choice when you choose the diamond ring for a long time, a permanent pass: "Would you like to choose crystal or glass?"

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