{"id":34576,"date":"2024-04-24T19:19:20","date_gmt":"2024-04-24T19:19:20","guid":{"rendered":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/04\/24\/a-new-method-of-making-diamonds-doesnt-require-extreme-pressure\/"},"modified":"2024-04-24T19:19:20","modified_gmt":"2024-04-24T19:19:20","slug":"a-new-method-of-making-diamonds-doesnt-require-extreme-pressure","status":"publish","type":"post","link":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/04\/24\/a-new-method-of-making-diamonds-doesnt-require-extreme-pressure\/","title":{"rendered":"A new method of making diamonds doesn\u2019t require extreme pressure\u00a0"},"content":{"rendered":"
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Diamonds in nature famously form under immense pressure in Earth\u2019s mantle. But a new laboratory technique allows diamonds to skip the squeeze.\u00a0<\/p>\n\n\n\n

The most common method for producing synthetic diamonds, known as high-pressure and high-temperature growth, or HPHT, requires around 5 gigapascals of pressure, similar to that in the upper mantle where diamonds form naturally. With this technique, carbon dissolved in liquid metal forms diamonds at temperatures around 1400\u00b0 Celsius.\u00a0<\/p>\n\n\n\n

But diamonds\u00a0can be grown at atmospheric pressure<\/a>\u00a0in a liquid of gallium, iron, nickel and silicon exposed to a gas of carbon-rich methane as well as hydrogen, scientists report April 24 in\u00a0Nature.\u00a0<\/em>The technique also required lower temperatures than HPHT: 1025\u00b0 C. The addition of silicon in particular seems to kick off the initial stages of growth, allowing a tiny bit of diamond to nucleate, says physical chemist\u00a0Rodney Ruoff. From there, the rest of the crystal can grow.<\/p>\n\n\n