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New Superconductor World Record Surpasses 250K
myrrdyn writes to tell us that a new superconductivity record high of 254 Kelvin (-19C, -2F) has been recorded. According to the article this is the first time a superconductive state has been observed at a temperature comparable to a household freezer. "This achievement was accomplished by combining two previously successful structure types: the upper part of a 9212/2212C and the lower part of a 1223. The chemical elements remain the same as those used in the 242K material announced in May 2009. The host compound has the formula (Tl4Ba)Ba2Ca2Cu7Oy and is believed to attain 254K superconductivity when a 9223 structure forms"
If you have some time to read, I'll explain my vision for the future: If we put solar panels across the desert, we'll need to have a transmission line to get it to places where people live. I reason that a super conductive line would do the trick. It is costly in terms of energy to cool the lines, but if you have an excess of energy to begin with, it could actually cost less than the loss of power you get in copper lines. Basically you just leech off the super conductive line for cooling.
The demand for energy will only increase with time regardless of conservation efforts, and this isn't a bad thing. The more energy we have, the cheaper transportation and food is which in turn lets people have more money for charity to help people who need food. So creating a surplus of energy soon could have worldwide benefits instead of just keeping up with demand.
I have a second vision that goes along with solar in the desert and superconductivity lines. It is tidal/solar near the coast, to fuel up hydrogen tanker trucks. These hydrogen tanker trucks could run on hydrogen themselves and take the energy inland. In the same processing plant that creates the hydrogen from electricity, they could also produce clean water for countries that need that as a critical resource.
Both of these visions takes a little bit of technological advancement, but not too much from what we have. My key question would be: Would this new superconductor be possible to mass produce, and could it be used as a new transmission line?
God spoke to me.
My favorite quote from TFA is, "This discovery is being released into the public domain without patent protection in order to encourage additional research."
Yeah, he may be a crackpot. But even if the data presented are 100% accurate, it's not really clear that the phenomena he observes constitute superconductivity.
The first chart (labeled "4-point resistance test") seems to show a slight but noticeable jump in resistivity at 254 K. Okay... why is the jump so small? High-temperature superconductors generally have /some/ measurable resistivity just below their transition temperature, but this appears to be much greater than that.
The Magnetization Test graph is totally unclear. The y-axis shows only relative values and no data is showed *below* the supposed transition temperature. I'm not entirely clear on what he's claiming to measure here. The Meissner Effect? The disruption of superconductivity in a strong field?
So, even if these measurements are correct, it's not clear at all to me that they demonstrate superconductivity.
My bicyles