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Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Looks interesting, it appears he may really have found something new. Si has never been used in any superconductor so this may constitute an invention in its own right..
EDIT:- Also it looks like there are some independent replications, but these haven't yet been published because of previous discoveries by other scientists that have not been replicated and so the major condensed matter journals are playing it safe. See Wikipedia edit history..
Registered Member #2939
Joined: Fri Jun 25 2010, 04:25AM
Location:
Posts: 615
Fascinating. Not easy to make though ! (70,000 psi compression!)
loved this bit at the end "RE-PUBLICATION NOTICE: Elsevier Publishing, dba Elsevier Science, as well as Morris Communications, both print and broadcast divisions, are specifically prohibited from re-publishing any part of this news story." Sounds like some bad blood there.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Also, using Si would make the resulting superconductor a lot harder and possibly more brittle. It could do unusual things to the properties though, think thin molecular sized fibres.
Registered Member #2901
Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837
I can't really judge whether the guy is a crank or not ... but I wish he'd work on creating a production process for one of his supposed high temperature superconductors for a continuous film so he can show some macroscopic effects instead of scope wiggles.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
For me, the central WTF of Joe Eck's work is that he observes a tiny change in resistance of a material, and says that this is because a small fraction of it became superconducting. Occam's Razor forces me to consider the other explanation: the resistance of all of it changed by a small amount.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
A resistance that changes at a specific temperature is unusual sure. I suspect that what Mr. Eck is observing is indeed a superconducting transition, but my current theory suggests that the reason *why* it works at all is due to a very rare barium isotope that is less than 20% of natural barium. If so then this explains the very low percentages seen and does also suggest an intriguing possibility that VHTC superconductors work by a form of inner electron resonance as they "line up" at or below a specific temperature, acting as a source for the Cooper pairs to form. See
There is prior experimental evidence of this, YBCO and MgB2 both exhibit Tc sensitivity to isotope number. I would theorise that as Tc goes up, so does sensitivity to isotope number and material impurities such as Ni and Fe which together result in a minute signal that can barely be resolved. It is amazing that he can even detect anything, just to give you an idea this is 1/1000 the voltage change typically seen on a linear Hall sensor with the magnet at 1 foot distance.
I'd be interested to hear how many pellets he had to make for each material before he found one that worked at all. This would give valuable data for others to experiment with, perhaps RTSC materials exist in nature but have yet to be discovered..
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Significant discovery by Mr. Eck
