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Mark · 11th February 2003, 10:17 AM

Does anyone know the current state of superconductor research? Seems to me an actual room temperature superconductor (if one can exist) would solve pretty much ALL our energy problems, wouldn't it?

Occasional Chemist · 11th February 2003, 10:27 AM

Quote:

Originally posted by Mark
Does anyone know the current state of superconductor research?

I'm a couple of years out of the loop on this one, but has anyone come up with a substance that becomes a superconductor at anything higher than liquid nitrogen temperatures? That was state-of-the-art two or three years ago.

Mark · 11th February 2003, 10:32 AM

I'm a couple of years out of the loop on this one, but has anyone come up with a substance that becomes a superconductor at anything higher than liquid nitrogen temperatures? That was state-of-the-art two or three years ago.

I think so...by a few degrees, anyway. Last I heard, they keep raising the temperature, bit by bit, depending on the combination tried. I know they were having some progress with (of all things) ceramic materials. The problem for me is that they keep giving the temps in Kelvin!

Agammamon · 11th February 2003, 10:39 AM

The best S/C are still at only a few degrees above LN. That in itself is warm enough for many application but these ceremic S/C are brittle and do not form into wires very well in addition to losing their S/C properties in intense magnetic fields, which, unfortunately, is the area where they would be of most use in current (no pun intended) applications.

Occasional Chemist · 11th February 2003, 10:45 AM

Quote:

Originally posted by Mark

I think so...by a few degrees, anyway. Last I heard, they keep raising the temperature, bit by bit, depending on the combination tried.

A quick Google search says that the current "record" is about 163K (-110 C or -166 F). That's at 300K atmospheres pressure, though. At normal pressure, the "record" seems to be 138K (-135C, -211F).

That's cold. But not as cold as Bud Ice.

Quote:

The problem for me is that they keep giving the temps in Kelvin!

Liquid N2 boils at around 77K, as a point of reference.

More info
here .

The superconductors that operate at liquid nitrogen temperatures or better appear to have commercial applications.

(Disclaimer: I don't do superconductor research, but I've a friend that worked on some of the ceramic materials.)

Occasional Chemist · 11th February 2003, 10:47 AM

Quote:

Originally posted by Agammamon
[...] ceremic S/C are brittle and do not form into wires very well in addition to losing their S/C properties in intense magnetic fields

Shocking ...

[Bad chemist! Bad chemist! No biscuit!]

Mark · 11th February 2003, 10:52 AM

Shocking ...

I am sensing some resistance to electrical punning! Feels right at ohm to me.

jj · 11th February 2003, 11:36 AM

Quote:

Originally posted by Mark
Shocking ...

I am sensing some resistance to electrical punning! Feels right at ohm to me.

Well, yes that does have some potential, but you'll get impedence put in your way at your admittance of puns, at least currently. If it were in my power, I'd try to get back to a phase where anti-punners would network as hard. Then your pun would be a circuit winner.

Mark · 11th February 2003, 11:48 AM

Well, yes that does have some potential, but you'll get impedence put in your way at your admittance of puns, at least currently. If it were in my power, I'd try to get back to a phase where anti-punners would network as hard. Then your pun would be a circuit winner.

LOL!!!!!! That's it fermi. I need to go replace a broken tube in my amplifier anyway. The question is, "is it tube B or not tube B?" Yes, that is the quesion.

kedo1981 · 11th February 2003, 12:20 PM

We residents of Neptune have had a room temp superconductor for some time now

Soapy Sam · 11th February 2003, 12:36 PM

Having just dropped in from the "Scotsmen invented Everything" thread, I must point out that Lord Kelvin was a guid Scot, choosing his title from the river that runs around Glasgow University.

Being a typical son of the north, he worked with the windows open and his sleeves rolled up. Believe me, in old G.U., the wiring IS MADE OF room temperature superconductors. Has been for over a century. You have to crack the methane ice on the boilers every morning, just to make the tea. This should explain why Kelvin temperatures start so low...

(The man also started what may be the longest running experiment in the physical sciences- Kelvin's pitch glacier- still on show today. ) Not the most exciting experiment, I have to say.

(ps. His mother was actually in Belfast when he was born, but Irish is next best if you can't actually be Scottish.)

Mark · 11th February 2003, 12:43 PM

(ps. His mother was actually in Belfast when he was born, but Irish is next best if you can't actually be Scottish.)

By ancestry I am both: 50/50.

xouper · 11th February 2004, 12:46 PM

bump

11th February 2003, 10:17 AM	#1
Mark Former Spinal Tap Drummer Join Date: Sep 2001 Posts: 5,529	Superconductor? Does anyone know the current state of superconductor research? Seems to me an actual room temperature superconductor (if one can exist) would solve pretty much ALL our energy problems, wouldn't it?

11th February 2003, 10:27 AM	#2
Occasional Chemist Muse Join Date: Nov 2002 Posts: 513	Re: Superconductor? Quote: Originally posted by Mark Does anyone know the current state of superconductor research? I'm a couple of years out of the loop on this one, but has anyone come up with a substance that becomes a superconductor at anything higher than liquid nitrogen temperatures? That was state-of-the-art two or three years ago.
Occasional Chemist Muse Join Date: Nov 2002 Posts: 513	__________________ Warning: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /usr/local/apache/htdocs/vbulletin/admin/db_mysql.php on line 38

11th February 2003, 10:39 AM	#4
Agammamon Graduate Poster Join Date: Jan 2003 Posts: 1,385	The best S/C are still at only a few degrees above LN. That in itself is warm enough for many application but these ceremic S/C are brittle and do not form into wires very well in addition to losing their S/C properties in intense magnetic fields, which, unfortunately, is the area where they would be of most use in current (no pun intended) applications.
	__________________ It will be a great day when the US Air Force has all the bombs it needs and the NEA has to hold a bake sale in order to pay its lobbyists.

11th February 2003, 10:45 AM	#5
Occasional Chemist Muse Join Date: Nov 2002 Posts: 513	Quote: Originally posted by Mark I think so...by a few degrees, anyway. Last I heard, they keep raising the temperature, bit by bit, depending on the combination tried. A quick Google search says that the current "record" is about 163K (-110 C or -166 F). That's at 300K atmospheres pressure, though. At normal pressure, the "record" seems to be 138K (-135C, -211F). That's cold. But not as cold as Bud Ice. Quote: The problem for me is that they keep giving the temps in Kelvin! Liquid N2 boils at around 77K, as a point of reference. More info here . The superconductors that operate at liquid nitrogen temperatures or better appear to have commercial applications. (Disclaimer: I don't do superconductor research, but I've a friend that worked on some of the ceramic materials.)
Occasional Chemist Muse Join Date: Nov 2002 Posts: 513	__________________ Warning: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /usr/local/apache/htdocs/vbulletin/admin/db_mysql.php on line 38

11th February 2003, 10:47 AM	#6
Occasional Chemist Muse Join Date: Nov 2002 Posts: 513	Quote: Originally posted by Agammamon [...] ceremic S/C are brittle and do not form into wires very well in addition to losing their S/C properties in intense magnetic fields Shocking ... [Bad chemist! Bad chemist! No biscuit!]
Occasional Chemist Muse Join Date: Nov 2002 Posts: 513	__________________ Warning: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /usr/local/apache/htdocs/vbulletin/admin/db_mysql.php on line 38

11th February 2003, 10:32 AM	#3
Mark Former Spinal Tap Drummer Join Date: Sep 2001 Posts: 5,529	I'm a couple of years out of the loop on this one, but has anyone come up with a substance that becomes a superconductor at anything higher than liquid nitrogen temperatures? That was state-of-the-art two or three years ago. I think so...by a few degrees, anyway. Last I heard, they keep raising the temperature, bit by bit, depending on the combination tried. I know they were having some progress with (of all things) ceramic materials. The problem for me is that they keep giving the temps in Kelvin!

11th February 2003, 10:52 AM	#7
Mark Former Spinal Tap Drummer Join Date: Sep 2001 Posts: 5,529	Shocking ... I am sensing some resistance to electrical punning! Feels right at ohm to me.

11th February 2003, 11:36 AM	#8
jj grumpy old skeptic Join Date: Oct 2001 Location: Deep in the rain Posts: 18,737	Quote: Originally posted by Mark Shocking ... I am sensing some resistance to electrical punning! Feels right at ohm to me. Well, yes that does have some potential, but you'll get impedence put in your way at your admittance of puns, at least currently. If it were in my power, I'd try to get back to a phase where anti-punners would network as hard. Then your pun would be a circuit winner.
	__________________ The Power to Quit

11th February 2003, 11:48 AM	#9
Mark Former Spinal Tap Drummer Join Date: Sep 2001 Posts: 5,529	Well, yes that does have some potential, but you'll get impedence put in your way at your admittance of puns, at least currently. If it were in my power, I'd try to get back to a phase where anti-punners would network as hard. Then your pun would be a circuit winner. LOL!!!!!! That's it fermi. I need to go replace a broken tube in my amplifier anyway. The question is, "is it tube B or not tube B?" Yes, that is the quesion.

11th February 2003, 12:20 PM	#10
kedo1981 Master Poster Join Date: Aug 2001 Location: ohio Posts: 2,103	We residents of Neptune have had a room temp superconductor for some time now

11th February 2003, 12:36 PM	#11
Soapy Sam NLH Join Date: Oct 2002 Posts: 25,929	Kelvin temperatures. Having just dropped in from the "Scotsmen invented Everything" thread, I must point out that Lord Kelvin was a guid Scot, choosing his title from the river that runs around Glasgow University. Being a typical son of the north, he worked with the windows open and his sleeves rolled up. Believe me, in old G.U., the wiring IS MADE OF room temperature superconductors. Has been for over a century. You have to crack the methane ice on the boilers every morning, just to make the tea. This should explain why Kelvin temperatures start so low... (The man also started what may be the longest running experiment in the physical sciences- Kelvin's pitch glacier- still on show today. ) Not the most exciting experiment, I have to say. (ps. His mother was actually in Belfast when he was born, but Irish is next best if you can't actually be Scottish.)
Soapy Sam NLH Join Date: Oct 2002 Posts: 25,929

11th February 2003, 12:43 PM	#12
Mark Former Spinal Tap Drummer Join Date: Sep 2001 Posts: 5,529	(ps. His mother was actually in Belfast when he was born, but Irish is next best if you can't actually be Scottish.) By ancestry I am both: 50/50.

11th February 2004, 12:46 PM	#13
xouper Banned Join Date: Jan 2002 Posts: 2,189	bump
xouper Banned Join Date: Jan 2002 Posts: 2,189