21 Nov '13 19:26>
http://phys.org/news/2013-11-d-tin-super-material.html
They call it '100% conduction", seems they are carefully avoiding the S word🙂
They call it '100% conduction", seems they are carefully avoiding the S word🙂
Originally posted by sonhouseNot only do they claim that it could be “first material to conduct electricity with 100 percent efficiency at the temperatures that computer chips operate” but, along the edges or surfaces of the material, “the electrons will travel without resistance.". Well, by definition, surely that IS room-temperature superconductivity! And yet they don't use the S word which is very suspicious. Surely if they were seriously claiming room-temperature superconductivity, this would be much bigger news!? So I don't know what is going on there but I doubt this could credibly be room-temperature superconductivity. Pity.
http://phys.org/news/2013-11-d-tin-super-material.html
They call it '100% conduction", seems they are carefully avoiding the S word🙂
OULOriginally posted by humyMy guess is, supposing it works, it might only conduct low currents, maybe microamps, which could explain their wording. They also may be hedging their bets because of patent filings. I can't believe a single layer of that stuff conducting electrons only on the edges like that could carry much current so there would have to be thousands or millions of layers separated by some insulator, maybe a polymer. If you just stacked them up the would probably just lose the whole effect so each layer seems to me would have to be independent from each other and far enough apart to keep electromagnetic interferences from effecting the total conductivity. You notice they say nothing about just how much current each layer conducts and how narrow a ribbon of the stuff could you make before THAT effects the edge conduction scheme. Could be maybe it needs a certain distance from other layers of the same stuff to avoid quenching the whole effect you are trying to achieve.
Not only do they claim that it could be “first material to conduct electricity with 100 percent efficiency at the temperatures that computer chips operate” but, along the edges or surfaces of the material, “the electrons will travel without resistance.". Well, by definition, surely that IS room-temperature superconductivity! And yet they don't use the S word ...[text shortened]... t is going on there but I doubt this could credibly be room-temperature superconductivity. Pity.
Originally posted by sonhouseYeah, my thoughts exactly.
My guess is, supposing it works, it might only conduct low currents, maybe microamps, which could explain their wording. They also may be hedging their bets because of patent filings. I can't believe a single layer of that stuff conducting electrons only on the edges like that could carry much current so there would have to be thousands or millions of layer ...[text shortened]... om other layers of the same stuff to avoid quenching the whole effect you are trying to achieve.
Originally posted by sonhouseA superconductor, by definition, is not only a material that has 0 resistance to the passage of electric current, it also has some other properties. My guess is that althought this material possesses zero resistance it doesn't possess the other properties to be called a superconductor.
http://phys.org/news/2013-11-d-tin-super-material.html
They call it '100% conduction", seems they are carefully avoiding the S word🙂
Originally posted by adam warlockProperties like the rejection of magnetic fields for instance. It looks like this new stuff would have no special magnetic properties outside of what you get with ordinary conductivity, producing a field and such.
A superconductor, by definition, is not only a material that has 0 resistance to the passage of electric current, it also has some other properties. My guess is that althought this material possesses zero resistance it doesn't possess the other properties to be called a superconductor.
Originally posted by humyThe author certainly hinted at true superconductivity sans magnetic effects when he said 100% conduction. It might be he is just Japanese and didn't know how to speak the effect well in English or he knew exactly what he was saying. It seems safe to say it would not be true superconductivity in any event, which is too bad.
If this material really does have room-temperature superconductivity along its edges, I guess a good name for this new type of superconductivity would be "edge superconductivity".
Perhaps when they talked about zero electrical resistance of the electrons along the edges, they merely meant very nearly zero electrical resistance?
Originally posted by adam warlock-unless you define it as a new type of superconductivity; one that has some but not all of its properties different from the other types -why not? But that is assuming that the edges really do conduct with zero resistance, which is likely to be false I think. Pity.
If the edges don't expel magnetic fields, talking about superconductivity is wrong.
Originally posted by humyActually perfect conductivity and superconductivity are not the same.
Not only do they claim that it could be “first material to conduct electricity with 100 percent efficiency at the temperatures that computer chips operate” but, along the edges or surfaces of the material, “the electrons will travel without resistance.". Well, by definition, surely that IS room-temperature superconductivity! And yet they don't use the S word wh ...[text shortened]... t is going on there but I doubt this could credibly be room-temperature superconductivity. Pity.