According to foreign media reports, a new study recently investigated the mechanism behind the formation of diamonds and discovered new ways to produce unique forms of artificial gemstones, which may be significant, not just the vaults of global jewelers. A new type of artificial diamond developed by Stanford University scientists provides more inspiration for this high-pressure production process, and uses the molecules found in crude oil and natural gas as a starting point.
Conventional diamonds are formed hundreds of miles below the surface of the earth under extremely high heat and pressure, thereby crystallizing carbon into valuable gemstones. For decades, scientists have been trying various methods to transform various materials into synthetic materials, and even De Beers, the world's largest diamond mining company, has participated. However, these methods usually involve a lot of energy and require a catalyst to trigger the conversion. Researchers at the School of Earth, Energy and Environmental Sciences at Stanford University set out to find a simpler method.
Sulgiye Park, the lead author of the study, said: "We want to see a clean system in which a single substance can be converted into a pure diamond without a catalyst." When making new synthetic diamonds, scientists We extracted the powder from the oil tank. The team examined these materials through a powerful microscope and observed that the atomic pattern in the powder is organized in the same way as the atoms that make up diamond crystals.
Unlike regular diamonds, it is well known that these different diamond-like carbons are composed purely of carbon because they also contain hydrogen. The research team then packed these diamond-like diamonds into so-called diamond anvil boxes, which scientists often use to generate extremely high pressure and produce superhard materials. Then they used lasers to heat these materials, and through a series of tests and simulations, the research team found that the three-cage diamond-like carbon can be converted into pure diamond with very little energy. The carbon atoms of the three-cage diamond-like carbon are quickly and rapidly aligned at a temperature of about 1160 ° F (627 ° C) and a pressure many times higher than the earth's atmospheric pressure, and hydrogen disappears from the mixture.
All of these operations are completed in less than a second, and the researchers point out that this technology can produce very few diamonds. Its true value lies in the insights it can provide about how diamonds are formed.
The researchers said: "Starting with these basic materials, you can make diamonds faster and easier, and you can also understand the diamond processing process in a more complete and thoughtful way than just imitating the high pressure and high temperature in diamonds. Part of the earth that formed naturally. "
Improving our understanding of how these synthetic diamonds are formed may have a significant impact on the jewelry industry. The hardness, transparency, chemical stability, thermal conductivity, and other unique properties of diamonds can make them useful to scientists in fields ranging from medicine to biosensing to quantum computing. Research senior author Yu Lin said: "If you can make a very small amount of this pure diamond, then you can dope it in a controlled manner for specific applications."
The research was published in the journal "Science Progress".
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