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A pair of Indian scientists may have just discovered the first superconductor material that works at room temperature. Their finding – which is currently surrounded by controversy – comes ten months after they were admonished by their peers because of a lack of evidence to support their findings.

The Indian Institute of Science (IISc), Bengaluru researchers have pre-published their research for review in arXiv, with the backing of eight more researchers and plenty more evidence a second time, and the final verdict is still weeks away.

The pair of IISC scientists that came out with the new research studied nanostructured materials as potential superconductors. When seen under a microscope, nanomaterials have a structure that is only a few nanometers (nm) is size, typically under 10 nanometres. The researchers used nanomaterial in the form of pellets and films made from silver particles that are embedded into matrix of gold atoms. This material, as it turns out, is a "superconducter" of electricity at ambient or room temperature.

The study came under fire when first published in 2018 was a pattern of "noise" that appeared in their data. All experiments have some degree (even if negligible) of noise, which is discounted if the data largely support what the research claims. But in the case of the current study, the noise also appeared in controls (the set-up for the experiment itself). The researchers argue that the noise appeared randomly, and was nearly impossible to duplicate by changing a parameter here and there.

They are not sharing their samples as silver can tarnish in presence of air which would lead to a huge damage in such a monumental result.

I want to know all about the noise that appeared in all the research papers published till now(regarding this experiment)?

Is the noise appearing in the experiments is just due to some instrumental operations or is it related to some magnetic phenomenon and superconductivity?Please explain the physics of the noise appearing in the situation.

EDIT

Here is the link to the video:-

https://swarajyamag.com/insta/watch-iisc-researchers-share-video-evidence-of-superconductivity-at-ambient-temperature-and-pressure

I am grateful to Thomas Fritsch for the source of paper so I copy the link address here:-

https://arxiv.org/abs/1807.08572

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    $\begingroup$ I'm voting to close this question as off-topic because it asks for speculation on the validity of as-yet unverified results. It is particularly inappropriate on this site to ask "I want all of the community to please tell me about the noise that appeared in all the research papers published till now(regarding this experiment)?" $\endgroup$ – DanielSank May 29 '19 at 17:25
  • $\begingroup$ @DanielSank I just want to know about the noise,nothing else. $\endgroup$ – RunMachine_Kohli May 29 '19 at 17:37
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    $\begingroup$ Maybe you should also give a link to the arxiv $\endgroup$ – Katermickie May 29 '19 at 17:38
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    $\begingroup$ This site is for technical questions about physics. Questions about media noise are off topic. If you would link to a research publication and ask a question about physics then we can answer. $\endgroup$ – DanielSank May 29 '19 at 17:45
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    $\begingroup$ published on arxiv: arxiv.org/abs/1807.08572 $\endgroup$ – Thomas Fritsch May 29 '19 at 18:18
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https://www.thehindu.com/sci-tech/science/finally-iisc-team-confirms-superconductivity-at-room-temperature-pressure/article27246496.ece

The material that exhibited superconductivity is in the form of nanosized films and pellets made of silver nanoparticles embedded in a gold matrix.

That is an unexpected system for superconductivity. But such samples should be quite insensitive to oxidation, so they are just bullshitting about not making samples available:

There was criticism that authors were not sharing the samples with their peers for evaluation. “Our samples are extremely sensitive to environment. Samples degrade very rapidly and so measurements have to be made immediately after sample preparation,” Prof. Ghosh says, explaining why samples could not be shared with others.

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  • $\begingroup$ It is true that samples are sensitive to environment. What is fake in it? $\endgroup$ – RunMachine_Kohli May 29 '19 at 18:27
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    $\begingroup$ Gold and silver are noble metals. Should be much less sensitive to environment than almost anything else. $\endgroup$ – Pieter May 29 '19 at 18:29
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    $\begingroup$ @Pieter silver does tarnish in air, but it shouldn’t be a huge problem to handle the samples to avoid this in transit (just ship in a little vacuum case). You’d think they would be motivated to confirm such a monumental result... $\endgroup$ – Gilbert May 29 '19 at 21:21
  • $\begingroup$ @Pieter Silver forms a layer of silver sulphide in presence of air. $\endgroup$ – RunMachine_Kohli May 30 '19 at 3:57

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