{"id":6801,"date":"2020-10-18T08:43:36","date_gmt":"2020-10-18T00:13:36","guid":{"rendered":"https:\/\/people.utm.my\/razman-ayop\/?p=6801"},"modified":"2020-10-18T08:43:36","modified_gmt":"2020-10-18T00:13:36","slug":"the-first-room-temperature-superconductor-has-finally-been-found","status":"publish","type":"post","link":"https:\/\/people.utm.my\/razman-ayop\/the-first-room-temperature-superconductor-has-finally-been-found\/","title":{"rendered":"The first room-temperature superconductor has finally been found"},"content":{"rendered":"
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By\u00a0Emily Conover<\/a><\/span><\/p>\n

OCTOBER 14, 2020 AT 11:00 AM<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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It\u2019s here: Scientists have reported the discovery of the first room-temperature superconductor, after more than a century of waiting.<\/p>\n

The discovery evokes daydreams of futuristic technologies that could reshape electronics and transportation. Superconductors transmit electricity without resistance, allowing current to flow without any energy loss. But all superconductors previously discovered must be cooled, many of them to very low temperatures, making them impractical for most uses.<\/p>\n

Now, scientists have found the first superconductor that operates at room temperature \u2014 at least given a fairly chilly room. The material is superconducting below temperatures of about 15\u00b0 Celsius (59\u00b0 Fahrenheit), physicist Ranga Dias of the University of Rochester in New York and colleagues report October 14 in\u00a0Nature<\/em>.<\/p>\n

The team\u2019s results \u201care nothing short of beautiful,\u201d says materials chemist Russell Hemley of the University of Illinois at Chicago, who was not involved with the research.<\/p>\n

However, the new material\u2019s superconducting superpowers appear only at extremely high pressures, limiting its practical usefulness.<\/p>\n

Dias and colleagues formed the superconductor by squeezing carbon, hydrogen and sulfur between the tips of two diamonds and hitting the material with laser light to induce chemical reactions. At a pressure about 2.6 million times that of Earth\u2019s atmosphere, and temperatures below about 15\u00b0 C, the electrical resistance vanished.<\/p>\n

That alone wasn\u2019t enough to convince Dias. \u201cI didn\u2019t believe it the first time,\u201d he says. So the team studied additional samples of the material and investigated its magnetic properties.<\/p>\n

Superconductors and magnetic fields are known to clash \u2014 strong magnetic fields inhibit superconductivity. Sure enough, when the material was placed in a magnetic field, lower temperatures were needed to make it superconducting. The team also applied an oscillating magnetic field to the material, and showed that, when the material became a superconductor, it expelled that magnetic field from its interior, another sign of superconductivity.<\/p>\n

The scientists were not able to determine the exact composition of the material or how its atoms are arranged, making it difficult to explain how it can be superconducting at such relatively high temperatures. Future work will focus on describing the material more completely, Dias says.<\/p>\n

When superconductivity was discovered in 1911, it was found only at temperatures close to absolute zero (\u2212273.15\u00b0 C). But since then, researchers have steadily uncovered materials that superconduct at higher temperatures. In recent years, scientists have accelerated that progress by focusing on hydrogen-rich materials at high pressure.<\/p>\n

In 2015, physicist Mikhail Eremets of the Max Planck Institute for Chemistry in Mainz, Germany, and colleagues\u00a0squeezed hydrogen and sulfur<\/a>\u00a0to create a superconductor at temperatures up to \u221270\u00b0 C (SN: 12\/15\/15<\/em>). A few years later, two groups, one led by Eremets and another involving Hemley and physicist Maddury Somayazulu, studied a high-pressure\u00a0compound of lanthanum and hydrogen<\/a>. The two teams found evidence of superconductivity at even higher temperatures of \u221223\u00b0 C and \u221213\u00b0 C, respectively, and in some samples possibly as high as 7\u00b0 C (SN: 9\/10\/18<\/em>).<\/p>\n

The discovery of a room-temperature superconductor isn\u2019t a surprise. \u201cWe\u2019ve been obviously heading toward this,\u201d says theoretical chemist\u00a0Eva Zurek\u00a0<\/a>of the University at Buffalo in New York, who was not involved with the research. But breaking the symbolic room-temperature barrier is \u201ca really big deal.\u201d<\/p>\n

If a room-temperature superconductor could be used at atmospheric pressure, it could save vast amounts of energy lost to resistance in the electrical grid. And it could improve current technologies, from MRI machines to quantum computers to magnetically levitated trains. Dias envisions that humanity could become a \u201csuperconducting society.\u201d<\/p>\n

But so far scientists have created only tiny specks of the material at high pressure, so practical applications are still a long way off.<\/p>\n

Still, \u201cthe temperature is not a limit anymore,\u201d says Somayazulu, of Argonne National Laboratory in Lemont, Ill., who was not involved with the new research. Instead, physicists now have a new aim: to create a room-temperature superconductor that works without putting on the squeeze, Somayazulu says. \u201cThat\u2019s the next big step we have to do.\u201d<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

By\u00a0Emily Conover OCTOBER 14, 2020 AT 11:00 AM It\u2019s here: Scientists have reported the discovery of the first room-temperature superconductor, after more than a century of waiting. The discovery evokes daydreams of futuristic technologies that could reshape electronics and transportation. Superconductors transmit electricity without resistance, allowing current to flow without any energy loss. But all […]<\/p>\n","protected":false},"author":24954,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6801","post","type-post","status-publish","format-standard","hentry","category-variety"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/posts\/6801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/users\/24954"}],"replies":[{"embeddable":true,"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/comments?post=6801"}],"version-history":[{"count":1,"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/posts\/6801\/revisions"}],"predecessor-version":[{"id":6802,"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/posts\/6801\/revisions\/6802"}],"wp:attachment":[{"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/media?parent=6801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/categories?post=6801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/people.utm.my\/razman-ayop\/wp-json\/wp\/v2\/tags?post=6801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}