[HN Gopher] Researchers say they've replicated LK-99 room temper...
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Researchers say they've replicated LK-99 room temperature
superconductor
Author : stevenjgarner
Score : 43 points
Date : 2024-01-05 16:30 UTC (6 hours ago)
(HTM) web link (thequantuminsider.com)
(TXT) w3m dump (thequantuminsider.com)
| cwillu wrote:
| "Editor's note: [...] At the risk of being stood up at the altar
| of the scientific method yet again, and understanding the duty to
| inform the community, here is a cautious summary of the paper
| guided by some social media commentary -- along with an earnest
| hope for peer review and an entreaty to not shoot the messenger
| even as I hear a round slide into the chamber."
| bnchrch wrote:
| > entreaty to not shoot the messenger even as I hear a round
| slide into the chamber
|
| Might be one of the most eloquent ways to say pending
| verification I've ever read.
| leshokunin wrote:
| "In summary, while the research offers some indications of room-
| temperature superconductivity in CSLA, the absence of a complete
| Meissner effect and direct dc hysteresis observations necessitate
| a cautious approach to these findings."
| bnchrch wrote:
| I know everyone is right to be cautious.
|
| And I'm sure some commenters are preparing to be dismissive or
| dare I say it, smug.
|
| But in the absence of being correct or incorrect, lets just take
| the time to collectively enjoy dreaming of a better tomorrow.
| MBCook wrote:
| Even if it doesn't turn out to be correct, we never used to
| hear about this stuff.
|
| It feels like the fact that people are coming up with things
| that look enough like promising candidates that it gets
| discussed is a good sign.
|
| I know it could just be the hype train. Someone got a ton of
| press for it last year so maybe someone else could too.
|
| I want to believe we're getting close, at least.
| rspoerri wrote:
| Whats the coolest thing you can imagine that will be possible by
| Room Temperature Superconductors?
| neom wrote:
| The changes in imaging technology would be interesting.
| Personally, I'd love an at-home fMRI.
| dist-epoch wrote:
| Anti-gravity toys.
| vlovich123 wrote:
| A freezer that uses almost no energy :D.
|
| But there's lots of applications - computers that are orders of
| magnitude faster and use way less energy, maglev trains that
| are orders of magnitude cheaper. Think about how as electronics
| got cheaper they permeated nearly every aspect to the point
| that cheapo $20 gadgets probably have a simple microcontroller
| instead of an analog circuit. Room temperature semiconductors
| would be a material science breakthrough that would permeate
| every aspect of our lives within ~40 tears similar to how
| semiconductors did in the 1960s (assuming we got better and
| cheaper at manufacturing it at scale which would be the next
| challenge after confirmation).
|
| That being said, I think it's something we should remain hyper
| skeptical about as a prior because of the low likelihood and
| how difficult it is to verify superconductance (because the
| samples are so small they have to use roundabout techniques to
| establish it like the Meisner effect that can be confused with
| other properties because measuring 0 resistance itself is even
| harder and more error prone).
| rspoerri wrote:
| is heat exchange greatly improved by superconductors?
| jesuslop wrote:
| I wonder if RTS enables large scale quantum computing
| dist-epoch wrote:
| Could you build a CPU from superconducting material, maybe
| partially, so that it generates much less heat when operating?
| neom wrote:
| https://arxiv.org/pdf/2401.00999.pdf
|
| Possible Meissner effect near room temperature in copper-
| substituted lead apatite Hongyang Wang1* , Yao Yao2+ , Ke Shi3 ,
| Yijing Zhao3 , Hao Wu4 , Zhixing Wu5 , Zhihui Geng6 , Shufeng Ye1
| , and Ning Chen7 1 Center of Materials Science and
| Optoelectronics Engineering, Institute of Process Engineering,
| Chinese Academy of Sciences, Beijing 100049, China 2 State Key
| Laboratory of Luminescent Materials and Devices and Department of
| Physics, South China University of Technology, Guangzhou 510640,
| China 3 Beijing 2060 Technology Co., Ltd, Beijing 100084, China 4
| School of Materials Science and Engineering, Huazhong University
| of Science and Technology, Wuhan 430074, China 5 Fujian
| Provincial Key Laboratory of Analysis and Detection Technology
| for Food safety, College of Chemistry, Fuzhou University, Fuzhou
| 350108, China 6 School of Engineering, Course of Applied Science,
| Tokai University, Hiratsuka 2591292, Japan 7 School of Materials
| Science and Engineering, University of Science and Technology
| Beijing, Beijing 100083, China (Dated: January 3, 2024)
|
| "In summary, the diamagnetism in CSLA has been investigated via
| both M-T curves and hysteresis M-H loops, which can be observed
| up to 250 K. Given the ZFC-FC bifurcation at above 300 K, we
| think there is still great chance to observe room-temperature
| superconductivity. The signals in our sample are still extremely
| weak, so we have to devote efforts to further synthesizing
| scalable samples with more active components."
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(page generated 2024-01-05 23:02 UTC)