From Science Has the quest for room temperature superconductivity finally succeeded? Researchers at the University of Rochester (U of R), who previously were forced to retract a controversial claim of room temperature superconductivity at high pressures, are back with an even more spectacular claim. This week in Nature they report a new material that superconducts at room temperature—and not much more than ambient pressures. “If this is correct, it’s completely revolutionary,” says James Hamlin, a physicist at the University of Florida who was not involved with the work. A room temperature superconductor would usher in a century-long dream. Existing superconductors require expensive and bulky chilling systems to conduct electricity frictionlessly, but room temperature materials could lead to hyperefficient electricity grids and computer chips, as well as the ultrapowerful magnets needed for levitating trains and fusion power. But given the U of R group’s recent retraction, many physicists won’t be easily convinced. “I think they will have to do some real work and be really open for people to believe it,” Hamlin says. Jorge Hirsch, a physicist at the University of California, San Diego, and a vociferous critic of the earlier work, is even more blunt. “I doubt [the new result], because I don’t trust these authors.”
回复 1楼Peekaboott的帖子 Professor Ranga Dias received his B.S. from the University of Colombo, Sri Lanka in 2006 and his Ph.D. in physics from Washington State University in 2013. He joins the University of Rochester after a postdoctoral fellowship in the Department of Physics at Harvard University, where he investigated the quantum phenomena in hydrogens at extreme conditions. Dias is an internationally recognized scientist in the field of high pressure physics, and his work has also been reported in popular press, e.g. New York Times, BBC, NBC, NPR, Physics Today, New Scientist, Chemistry World, Science News, and Nature News and Views.
本周,美国科学家团队又宣布了一项巨大的技术突破——常温超导技术。这个技术颠覆了传统物理学定律,将来一旦推广开来,意味着电力的传输将没有损失,人类真正迎来纯电时代。如果加上核聚变技术的完善,人类迎来绿色能源已经看到曙光。
而这一次,是由美国罗切斯特大学机械工程和物理学教授兰加·P·迪亚斯 (Ranga P. Dias) 及其团队研究出来的,他们使用一种叫镥箔的稀有金属,将其压在两颗钻石之间,然后将含有99%的氢气和1%的氮气的气体泵入里面,将气压加大到1GPa(相当于1万倍大气压),在150华氏度(约65摄氏度)加热一天,24小时后释放压力,随着温度降低到室温状态——70华氏度(约21摄氏度),实现了零电阻。
“如果这是真的,那将是一个非常重要的突破!”休斯顿大学的华裔物理学教授朱经武(Paul CW Chu)说,朱经武曾在1987年将超导温度提高到90K(﹣185.15℃)以上,打破液氮的“温度壁垒”(77K)。
美帝真是莫名其妙,这种人还能在学术圈里混。
稀有金属还要一万倍大气压??!!!这如何大量制造?
中国两种方案的常温超导铁路已经在实验建设阶段了,条件上看,感觉比这个先进太多。
一万倍大气压? 那谈温度还有啥意义
斯里兰卡的吧
号称是释放压力并降温到室温仍然保持了零电阻。当然,我表示谨慎怀疑。
Professor Ranga Dias received his B.S. from the University of Colombo, Sri Lanka in 2006 and his Ph.D. in physics from Washington State University in 2013. He joins the University of Rochester after a postdoctoral fellowship in the Department of Physics at Harvard University, where he investigated the quantum phenomena in hydrogens at extreme conditions. Dias is an internationally recognized scientist in the field of high pressure physics, and his work has also been reported in popular press, e.g. New York Times, BBC, NBC, NPR, Physics Today, New Scientist, Chemistry World, Science News, and Nature News and Views.
现在的凝聚态物理已经变质了
上次是200万大气压 抛开造假不谈,如果是真的,那是breakthrough。
被发现造假之后还让他继续忽悠了十几年?这些大学都干啥吃的。
学术界的政治远胜于工业界,因为没有profit这种硬指标。所以只要搞定政治什么都好说
这方面还是日本好些。小保方晴子被发现造假之后,人家导师就自杀了。记得还有人拿这个做主题拍爱情动作片,名曰“美人研究者”。
要是美帝有人把这三哥的事儿也拍成爱情动作片,管保他混不下去。= =
哈哈哈 这模样, 放pornhub上没人会看吧
这不得提供一下番号?LOL
wsu出来的也是个能人😝
APS March Meeting
谁看汁男,都是冲着女优去的。
https://www.nytimes.com/2023/03/08/science/room-temperature-superconductor-ranga-dias.html
这个说法是第一次看到,其它的报道都是常温1GPa的压力(大概1万大气压)下超导。 一万大气压的话,应该很多实验室可以重复这个实验。 是不是真的,很快就知道了。我个人倾向于有谱,也许不同实验室做出来的温度和压力会有点偏差。 真的验证的话,肯定是超导突破性的东西。 之前他团队做的需要超高大气压的Nature论文被期刊撤稿,当然所有作者都不同意。 强制撤稿的理由是认为呈现的一些数据在后期噪音处理上有质疑。 但是对于测量的接近零电阻的数据是没有质疑的。质疑的数据是测磁阻还是啥的。 总之样品太小,测量精度不好说。
1gpa还是很好达到的,随便找一个亚裔多的高中扔进去,就能卷到4-5gpa😄
这话说的 低温很难吗? 买罐液氮分分钟就低温了
达到高压当然不难
维持高压底下的“常温超导”它就是个嘴炮
现在达到这个高压在工业上还是不难的,关键是应用上还没得很。建一个磁悬浮列车,难道要液氮罐一个接一个?
我说的难道不是这个意思吗 我回的那个帖子, 她说高中生就能搞出高压, 是没错啊, 我说买罐液氮就能搞出低温也没错吧
关键是你如果应用时候需要加高压, 那这个所谓“常温超导”它就是个鸡肋, 这还是阿三没造假的话
为啥追求“常温”?不就是想降低应用成本吗, 你常温了加个一万倍大气压, 这不是扯淡吗
那你是没看懂笑话,我说的是高中里很卷,亚裔学生的GPA都是四点几的。1GPA很容易。
算这次第三次放卫星了,前两次都是诈胡 不明白track record这么差的人为啥可以继续发大文章 nature现在也是不讲究,只追求眼球
今天早上听NPR的radio提到这个发现。同时NPR也说这个group有篇相关文章从science还是nature撤稿,提醒听众持谨慎态度。
这阿三是惯犯了
有code吗。。。