Technology

59392 readers

3377 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

332

First claimed successful replication of LK-99 (twitter.com)

submitted 1 year ago by realherald@lemmy.world to c/technology@lemmy.world

57 comments fedilink hide all child comments

"Accomplished by a team at the Huazhong University of Science and Technology and posted 30 minutes ago.

Why this is evidence: The LK-99 flake slightly levitates for both orientations of the magnetic field, meaning it is not simply a magnetized piece of iron or similar 'magnetic material'. A simple magnetic flake would be attracted to one polarity of the strong magnet, and repelled by the other. A diamagnet would be repelled under either orientation, since it resists and expels all fields regardless of the polarity.

Caveats There is no way to verify the orientation of the strong magnet in this video, also, there are yet to be published experimental measured values of this sample. Diamagnetism is a property of superconductors but without measured and verified data, this is just suggestive of a result.

Take-away If this synthesis was indeed successful, then this material is easy enough to be made by labs other than the original research team. I would watch carefully for results out of Argonne National Lab, who are reported to be working on their own synthesis of a sample.

This overall corroborates two independent simulation studies that investigated the original Korean authors claim about material and crystal structure, and both studies supported the claims.

Lawrence Berkeley National Lab: https://arxiv.org/pdf/2307.16892.pdf Shenyang National Lab: https://arxiv.org/pdf/2307.16040.pdf "

you are viewing a single comment's thread
view the rest of the comments

[–] Donjuanme@lemmy.world 1 points 1 year ago

Why would another lab be manipulatable? This guy didn't even need to get paid off:

"The video in question is allegedly from the University of Science and Technology in Beijing and purports to show a small black substance floating in the air as it follows a magnet. According to the video's poster, he did it for "attention grabbing purposes" - it was a way to coast the hype around LK-99." Gotta strike the iron while it's hot.

Current analysis says lk-99 isn't even a"good"conductor, let alone a super conductor, let alone a room temperature super conductor. I'll hope that "this one easy to produce material has revolutionized science" gets discovered some day, but it didn't happen last week.