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Room temperature, ambient pressure superconductivity – this time for real?

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251–260 of 362 posts

Re: Room temperature, ambient pressure superconductivity – this time for real?

#251

Can someone explain why this is a big deal? The author cites that it doesn't need an explanation, but I definitely need one lol.

People like to list technologies it would improve, like power transmission or MRIs, but I think it will be hard to predict what technologies are completely enabled by this, such as potentially fusion or quantum computing or things I don't even know about yet.

Re: Room temperature, ambient pressure superconductivity – this time for real?

#253

Earlier quoted context omitted.

I'm following this fellow: https://twitter.com/andrewmccalip Seems to have the right energy [edit thanks folks] https://nitter.net/i/status/1684433849781202944 Here’s a more colorful play by play as well: https://nitter.net/8teapi/status/1684586672917565443

I love the colorful play-by-play. It could almost be a kdrama. It's also kind of crazy that one of the authors did over 1000 experiments until he found LK-99, regardless of whether it checks out. Talk about a grind mindset.

That's very much like how we eventually got working electric light. 1000's of failures and then something that really worked.

Re: Room temperature, ambient pressure superconductivity – this time for real?

#254
post #242

Earlier quoted context omitted.

>Glad to see a realistic take on HN. From an account created 1 hour ago, claiming to have worked with the author. Take with a huge grain of salt.

i agree re. skepticism but all I'm saying about HT Kim is that he's a real scientist with real bona fides, which I think you could find by asking anyone in my specific subfield of condensed matter physics

i should also have mentioned that I do not personally know the extent of his knowledge about superconductivity, to my understanding he was an expert on the synthesis of phase change materials, particularly the metal insulator transition. in the 2nd paper he is cited for proposing the superconductivity mechanism based on mechanisms seen in the metal-insulator-transition, which I have not seen before as an SC mechanism

Re: Room temperature, ambient pressure superconductivity – this time for real?

#255
post #244

Earlier quoted context omitted.

Skepticism is warranted, but apparently there's infighting in the group (only 3 people can be recipients of a Nobel Prize) and one jumped the gun to get his name out there. And also apparently fear of research espionage from the PRC (not as far-fetched as it sounds).

Interesting.. would you have a source for those rumors?

It's just speculation because the third author on the first paper isn't an author on the second, better paper, and he's the one who published it.

Re: Room temperature, ambient pressure superconductivity – this time for real?

#256

Earlier quoted context omitted.

Basically, all of the electronical devices humanity uses, from nuclear power plants to smart watches, are about to get efficiency improvements in double digits. This is trillions of dollars per year, and a couple of degrees in average Earth temperature.

Unfortunately, this is not even close to correct. Resistive losses in wires are not the only cause of wasted energy, and in most battery-powered devices they aren't very important at all. How is a superconductor supposed to help with e.g. switching losses in a buck converter, or reduce the amount of energy stored in a transistor's gate capacitance?

> How is a superconductor supposed to help with e.g. switching losses in a buck converter

That one I can answer for you: because it would reduce the time to go from 'on' to 'off' due to the much more rapid flow on account of reduced resistance. The currents in a buck converter can be very high because they are short, but that is also exactly where you'll find the losses: in the transition from 'off' to 'on' and vice versa. So this won't do anything for the MOSFET losses but it could seriously shrink inductor losses and those are the other major factor.

Re: Room temperature, ambient pressure superconductivity – this time for real?

#257

Oh man I look forward to this only needing 5 more years before we build one!

I understand where you're coming from - breakthroughs in the lab often take years or decades to make their way into the public space, if they do at all - but to clarify: the synthesis procedure for LK-99 is simple enough that many labs can make a sample in a week. In fact, there are several parties attempting synthesis in public as we speak.

If this is real, you're going to know about it very soon.

Re: Room temperature, ambient pressure superconductivity – this time for real?

#258

People are quick to dismiss astrology, but the last time Pluto entered Aquarius (which will happen for the next 20 years starting in Dec) we had the Industrial Revolution. The time before that we had the Scientific Revolution. Things are right on track with this discovery.

You could also achieve this with 30 random sine waves of different amplitude and frequencies.

You could find patterns like “when wave B intersects wave K, there’s a global pandemic within 5 years”!

https://www.tylervigen.com/spurious-correlations

Re: Room temperature, ambient pressure superconductivity – this time for real?

#259
post #252

This really reminds me of "cold fusion" We all really wanted that to be true, too. Patience, is all that is available to us that do not have a lab able to replicate

Actually, cold fusion exists! Even energy-positive at that. It's just not positive enough - current production method is too wasteful to be of practical use (creating muon is too expensive atm).

See https://en.m.wikipedia.org/wiki/Muon-catalyzed_fusion

Re: Room temperature, ambient pressure superconductivity – this time for real?

#260

Can someone explain why this is a big deal? The author cites that it doesn't need an explanation, but I definitely need one lol.

Portable MRI would be a huge deal. We'd also see superconducting motors in electric vehicles, along with marked efficiency gains in every part of EV systems.

We could have a superconducting power grid with solar panels distributed across the planet. Superconducting batteries could give us grid level storage. It also reduces the cost of hypothetical fusion reactors, their magnets can be cooled with unpressurized water instead of liquid helium.

Calling this the most revolutionary discovery of the last hundred years isn't an overstatement. This will affect almost every industry and in ways that we can't even imagine yet. If this material is what they claim, it's going to be a new era for our species.

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