Here are links for the actual paper(s):
https://arxiv.org/ftp/arxiv/papers/2307/2307.12037.pdf
https://arxiv.org/ftp/arxiv/papers/2307/2307.12008.pdf
They do show super conducting property at room temperature indeed, the critical current is around 250mA though.
For those more knowledgeable than I - is there fundamental physics that indicates superconductivity can not exist at room temperature, or is there optimism that we will one day discover room temperature superconductive materials?
You need a proper sample with 4W connection, defined geometry, to perform electrical measurements to prove SC properties.
No picture, and no such information given.
He is demonstrating Lenz's law, nothing else. Any copper or aluminum or silver would demonstrate the same motion when exposed to a strong moving magnetic filed.
How is it possible here at EEVBlog, no one knows about Lenz's law, or recognize that this is what happens when you move a magnet in front a copper coin.
I've intensively done research on those YBCO and similar cuprates, 35years ago, by means of one of the first HP3458A, used for harmonic analysis of the AC susceptibility.
And I have seen a lot of samples..
That's the reason why I'm more and more reluctant about their paper.
We'll see.
Frank
Claimed critical temperature is 127C:
https://arxiv.org/abs/2307.12008
I've intensively done research on those YBCO and similar cuprates, 35years ago, by means of one of the first HP3458A, used for harmonic analysis of the AC susceptibility.
And I have seen a lot of samples..
That's the reason why I'm more and more reluctant about their paper.
We'll see.
FrankRealistically, how long till someone could verify their results? According to the paper, the manufacture should be reasonably doable with common-ish lab tech.
"Is the room temperature superconductor paper legit?"
Poll says NOPE
https://manifold.markets/fortenforge/is-the-room-temperature-superconduc
QuoteHow is it possible here at EEVBlog, no one knows about Lenz's law, or recognize that this is what happens when you move a magnet in front a copper coin.
I am quite surprised as well that there has been as much conversation as we have seen that:
1. Makes no reference to Lenz's law or even eddy currents
2. Does not question the relevance of the video to the claim. I see absolutely none, other than a possible attempt to wow the uninformed.
I add my own facepalm:
I don't think anyone really cares about the video, it just isn't very relevant one way or the other. Ultimately, the important parts are the susceptibility, resistance and specific heat measurements, so that's what people are discussing.
The issue I have is why the video was even presented at all. Anybody even vaguely familiar with the principles involved will know there is no need for superconductivity to explain the behaviour.
The issue I have is why the video was even presented at all. Anybody even vaguely familiar with the principles involved will know there is no need for superconductivity to explain the behaviour.
The only purpose I can see is to "wow the uninformed" - which leads me to think the whole exercise is bulls**t.
If, in the unlikely event, it is real, then they really need a technically savvy publicist who can get a useful demonstration video together.