Earlier quoted context omitted.
What's your point?
Are you living in the fairy land? in the real world, Academic fraud is a thing.
Please explain the benefit of faking the result of this paper and destroying your reputation.
The first room-temperature ambient-pressure superconductor?
801–810 of 906 posts
Re: The first room-temperature ambient-pressure superconductor?
#802Guys, even if everything in this paper is true, the material as it is might have limited applications. From what they show, the critical field and critical current seem very low. 2500 Oe is like 0.25 Tesla. Even REBCO at 77K is >1T. And 2500 Oe is not even at critical temperature but much lower. From skimming through the article I couldn't find the sample size of the current measurement to get the critical current de…
When I were a lad ... I remember the first superconductors (long predicted) being announced in the mid '80s. They stayed high on the nerdy headlines for quite a few years. Excitable write ups in New Scientist for us civilians. Nuclear fusion was still 50 years off but room temp superconductors were only a few years off (nope). I went to a posh school in Oxfordshire in the mid to late '80s and my physics class (form)…
Reminds me of a story: I was in college physics in fall '89 and our professor was telling us how he and his son spent the summer in Alaska prospecting for whatever material was all the rage in superconductors at the time. He was explaining that once superconductors broke the liquid helium temperature, it was going to be a game changer. He said "If you buy it by the gallon, liquid helium is cheaper than beer."
To which a student replied "You buy beer by the gallon?"
Re: The first room-temperature ambient-pressure superconductor?
#803Earlier quoted context omitted.
Maybe it could be a stabilizing factor, because the many interests involved would be mostly aligned. However unstable Middle East is, most of the time no oil well is on fire, or in a war zone.
It is not about the steady state being unstable on its own, it is about how easily it can be brought out of equilibrium with a very small force (of a hand full of people). An inherent flaw in the centralized nature of such a system
It wouldn't be centralized
Re: The first room-temperature ambient-pressure superconductor?
#804Earlier quoted context omitted.
This is a dancing pig. The thing to appreciate is not how well it dances but that it dances at all .
This is one of those lines that sounds like it came from a book of quotations, but I can't seem to find any source beyond this post.
I've heard it as: It's like a dog riding a skateboard. It's not impressive how well it rides, it's impressive that it rides at all.
But I can't find the original source or anything.
Re: The first room-temperature ambient-pressure superconductor?
#805Earlier quoted context omitted.
One thing I can imagine is desktop MRI machines, or, at least, much cheaper and less finicky big MRI machines that don’t take days to chill to operating temperature. Maglevs are also a popular guess - safer, faster, and more power efficient ground mass transport would be a huge thing. Maybe even magnetic rail space launches. And, of course, military applications (the last few examples I mentioned involve acceleration…
Those are two I see mentioned the most often (MRI and maglevs). To be honest though, those are great things to improve (especially the MRI), however, the amount of hype in this thread and on the internet tells me there must be more than just improved MRI and better trains....
If we can find one with the right material properties it makes long distance movement of power generation much more plausible and economical.
Which would enable us to put a lot of solar power in the desert and move it around effectively to other places on Earth.
Again, with the right material properties it could also produce efficient storage, and that also has huge implications for electrical generation.
Re: The first room-temperature ambient-pressure superconductor?
#806Earlier quoted context omitted.
Isn't the big win of superconductors that you can build batteries with them? Like, you just pump them full of power that goes round and round forever with no or trivial losses. I always heard that this was why they were interesting.
It is an option, but there are two downsides: - such a current generates a huge electromagnetic field. So it won't work for a car battery, but may work for grid storage. - price - there is a limit to how much current you can store, and so far this was the limiting factor - i.e. we don't really care about room temperature superconductivity in this case, but we care about the price of materials to build such batteries
I'm pretty sure you can pick coil geometries that cancel external magnetic fields. There may be some stray fields, but they can be quite modest with tight manufacturing tolerances.
It's an interesting idea worth exploring. The two places where I think feasibility may face challenge is in the energy density gated by critical current density and magnetic field and in raw discharge rate (giant inductors are not known for being able to change their current quickly).
Knowing peak capacity and aging is also tricky since you can't measure critical limits without hitting a quench (a very, very bad scenario). You'll need to maintain healthy margins so you don't have things blowing up on sunny days or after so many charge/discharge cycles.
Re: The first room-temperature ambient-pressure superconductor?
#807Earlier quoted context omitted.
All of those elements are so common - this should be easy to test. We'll see.
Any news yet? You could almost make this stuff in a pizza oven.
I would guess that it'll take a month or two to repro the procedure. The paper was uploaded in the last week, so we're still probably a few weeks out on peer review.
Re: The first room-temperature ambient-pressure superconductor?
#808Earlier quoted context omitted.
Isn't the big win of superconductors that you can build batteries with them? Like, you just pump them full of power that goes round and round forever with no or trivial losses. I always heard that this was why they were interesting.
Until someone sneezes and all the power is released at once.
That's only if you run close to the limit. You'd only ever do that in controlled labs.
Re: The first room-temperature ambient-pressure superconductor?
#809Earlier quoted context omitted.
The direct impact could be relatively limited, at least for a while. Having a room-temperature superconductor is really awesome, but existing high-temperature superconductors are fragile and expensive. You can make motors, electromagnets, and power grids with much better efficiency—but that’s not so useful if the parts break when you look at them wrong. You’ll still get better magnets and sensors, probably. Maybe eve…
Sensors could be huge I think, even with a material that's a total dud in terms of the superconductor power revolution. I'd be surprised if there wasn't a range of novel sensor approaches that haven't really been explored due to the practicality threshold of low temperature superconductivity.
Re: The first room-temperature ambient-pressure superconductor?
#810Earlier quoted context omitted.
It is an option, but there are two downsides: - such a current generates a huge electromagnetic field. So it won't work for a car battery, but may work for grid storage. - price - there is a limit to how much current you can store, and so far this was the limiting factor - i.e. we don't really care about room temperature superconductivity in this case, but we care about the price of materials to build such batteries
I'm pretty sure you can pick coil geometries that cancel external magnetic fields. There may be some stray fields, but they can be quite modest with tight manufacturing tolerances. It's an interesting idea worth exploring. The two places where I think feasibility may face challenge is in the energy density gated by critical current density and magnetic field and in raw discharge rate (giant inductors are not known fo…
The energy density is absurdly low.
https://en.wikipedia.org/wiki/Superconducting_magnetic_energ...
Compare with this table:
https://en.wikipedia.org/wiki/Energy_density#In_chemical_rea...