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Exotic Material Boosts Electromagnetism Safely « Scientific Information « Technology
 
Thu, 01 Mar 2012, 1:28am #1
DGDanforth
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Duke University and Boston College

“The metamaterial should be able to increase the magnetic force without increasing the electric current in the source coil,” Urzhumov said. “The phenomenon of magnetostatic surface resonance could allow magnetic levitation systems to increase the mass of objects being levitated by one order of magnitude while using the same amount of electricity.”


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"Make it as simple as possible, but not simpler" A. Einstein
"Alas, simplicity is rarely simple" curiositEE

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Thu, 01 Mar 2012, 8:13am #2
DAP
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Magnetic levitation of metamaterial bodies enhanced with magnetostatic surface resonances

The Phenomenon of Wireless Energy Transfer: Experiments and Philosophy

Experiments on Wireless Power Transfer with Metamaterials


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Fri, 02 Mar 2012, 12:44am #3
DGDanforth
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DAP,
Good finds!


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Fri, 02 Mar 2012, 4:55pm #4
Prof Neilson
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Now make the coils out of a room temperature superconductor

Theory of High-TC Superconductivity:
Accurate Predictions of TC

http://lanl.arxiv.org/ftp/arxiv/papers/1202/120...


All I want for Christmas is a Graphene / Ionic Liquid Electrical Generator.

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Fri, 02 Mar 2012, 5:29pm #5
supamark
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Prof Neilson wrote:

Now make the coils out of a room temperature superconductor

Theory of High-TC Superconductivity:
Accurate Predictions of TC

http://lanl.arxiv.org/ftp/arxiv/papers/1202/120...

well, if such a thing ever exists they will... but prediction is much easier than production, as EEStor has shown us.

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Fri, 02 Mar 2012, 7:28pm #6
Taylor
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Looks like another Lenspie "perpetual motion" device.

I motion that DGDanforth delete this entire thread before Lenspie reads this.

Last edited Sun, 18 Mar 2012, 1:14pm by Taylor

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Sat, 03 Mar 2012, 10:32am #7
DAP
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Prof Neilson wrote:

Now make the coils out of a room temperature superconductor

Theory of High-TC Superconductivity:
Accurate Predictions of TC

http://lanl.arxiv.org/ftp/arxiv/papers/1202/120...

good stuff Paul

Josephson relation:
Voltage between two superconducting grains(layers) joined (Josephson coupled) by weak link is proportional to time dependence of their phase difference

Superconductor -> Current with no voltage
Insulator -> Voltage with no current

Josephson Energy

Superconducting Qubits and the Physics of Josephson Junctions

Bi-directional ultrafast electric-field gating of interlayer charge transport in a cuprate superconductor

Light-Induced Superconductivity in a Stripe-Ordered Cuprate


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Sat, 03 Mar 2012, 7:07pm #8
Prof Neilson
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A formula to predict superconducor critical temperature is pretty impressive stuff.

This paper has given me some wacky ideas about superconduction.

I might post them - but then the kooks would be all over me even more than normal. Oh hell, I will post them in code and see what happens.

The paper points to stripes of electrons and holes. Then it gives some kind of hand waving gibberish theory.

The holes would be pretty good at helping the electrons stay in a row.

So why do the electrons have to move to transfer energy?

Why not a bucket brigade of wave functions coupling to transfer energy? This is loss less energy transfer by definition. I kind of like this wacky idea developed from the ideas in Mead's book.


All I want for Christmas is a Graphene / Ionic Liquid Electrical Generator.

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Sat, 03 Mar 2012, 9:30pm #9
DAP
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Prof Neilson wrote:

A formula to predict superconductor critical temperature is pretty impressive stuff.

This paper has given me some wacky ideas about superconduction.

I might post them - but then the kooks would be all over me even more than normal.

Paul,

Leave the kookiness to me. That way it is in character. Besides, you have your title to protect. (-:

I’ve always thought that Cubic CMBT can be viewed as a system with interfaces within the CMBT crystal lattice, with alternating planes of Ba (and Ba replacement atoms) & oxygen and Ti (and Ti replacement atoms) & oxygen. The electronic system that describes each of these planes is quite different, with the electron density in the ‘titanium plane’ being delocalized and somewhat shared among the Ti and O atoms and the electron density in the ‘barium plane’ found almost exclusively on the O atoms. (see http://www.theeestory.com/posts/228143)

What if the very dilute paramagnetic dopants in the Ti layer served as focal points for mesoscopic superconducting vortices?

And what if these vortices were linked through Ba layers, each serving as a Josephson junction?

And what if energy is stored in those Ba layers?

From the link above to ‘Josephson energy’ -

In superconductivity, the Josephson energy is the potential energy accumulated in the Josephson junction when a supercurrent flows through it. One can think about a Josephson junction as about a non-linear inductance which accumulates (magnetic field) energy when a current passes through it. In contrast to real inductance, no magnetic field is created by a supercurrent in Josephson junction --- the accumulated energy is a Josephson energy.

For more see Superconducting Qubits and the Physics of Josephson Junctions.
(Consider that the oscillation may be at THz frequencies.)

Regards,
dp

P.S.

This paper has given me some wacky ideas about superconduction.

It is quite an interesting journey to search the posts on this forum using the search term "superconduct."

Last edited Mon, 05 Mar 2012, 5:33am by DAP


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Sun, 04 Mar 2012, 7:53am #10
DAP
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DAP wrote:

I’ve always thought that Cubic CMBT can be viewed as a system with interfaces within the CMBT crystal lattice, with alternating planes of Ba (and Ba replacement atoms) & oxygen and Ti (and Ti replacement atoms) & oxygen. The electronic system that describes each of these planes is quite different, with the electron density in the ‘titanium plane’ being delocalized and somewhat shared among the Ti and O atoms and the electron density in the ‘barium plane’ found almost exclusively on the O atoms.

When applied to HT superconductors, the descriptive phrase used in the literature for such an arrangement is ‘Intrinsic Josephson Junction.’

DAP wrote:

Consider that the oscillation may be at THz frequencies.

See, for example, Terahertz-wave radiation emitted by intrinsic Josephson junctions

From a statement made almost 3 years ago:

Then when you coat 'em, you've isolated ... you've now sealed in all the goodness.


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Sun, 04 Mar 2012, 8:22am #11
DAP
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Shunt-capacitor-assisted synchronization of oscillations in intrinsic Josephson junctions stack

Collective dynamics of Josephson vortices in intrinsic Josephson junctions: exploration of in-phase locked superradiant vortex flow states

Phase Dynamics in Intrinsic Josephson Junctions and its Electrodynamics

[Doug - I apologize for taking over your topic. I could start a new one if you like.]


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Mon, 05 Mar 2012, 3:39am #12
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DAP wrote:

Shunt-capacitor-assisted synchronization of oscillations in intrinsic Josephson junctions stack

Collective dynamics of Josephson vortices in intrinsic Josephson junctions: exploration of in-phase locked superradiant vortex flow states

Phase Dynamics in Intrinsic Josephson Junctions and its Electrodynamics

[Doug - I apologize for taking over your topic. I could start a new one if you like.]

DAP, no, that's fine. Go for it!


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Mon, 05 Mar 2012, 6:36pm #13
Prof Neilson
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Superconductivity as a atomic scale meta material

Stripes of electrons - going nowhere - shuttling energy

Study the separation of charge and energy. Voltage is the frequency of the electrons wave function. Energy can transfer through wave function coupling - resonant coupling at the electron level.

Normal conductivity has no to very limited wave function coupling - it is electron mass transport. The higher frequency wave function is carried in the mass of the electron down the wire.

Superconductivity has no to very limited mass transport. The higher frequency wave function readily couples to the next electron in the stripe. The electron voltage radiates down the conductor as the wave functions couple.

Well - it makes for a good story and its wacky enough that it might even be right.


All I want for Christmas is a Graphene / Ionic Liquid Electrical Generator.

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Mon, 05 Mar 2012, 11:03pm #14
Y_Po
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Complete and utter bullshit.
"Meta-material" has became a buzz-word. Stupid idiots think that there is some kind of new science in there when in reality the whole point of meta-materials that there is absolutely no new science in there. And no, there is absolutely no way for meta-materials do what that article seems to be claiming they do.
But ferromagnetics do increase magnetic field, but they are not meta-materials.


Q: What would happen if you give 12V battery and two 6V light bulbs to Weir/Nelson?

A: They will wait 8 years for 12V➜6V DC-DC converter.

http://theeestory.com/topics/3687
http://theeestory.com/topics/2105
http://theeestory.com/topics/4835

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Tue, 06 Mar 2012, 2:39am #15
Daniel R Plante
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Y_Po wrote:

...in reality the whole point of meta-materials that there is absolutely no new science in there.


very true


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Tue, 06 Mar 2012, 9:18am #16
Prof Neilson
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What - no ridicule of coupling wave functions? You guys are slipping.


All I want for Christmas is a Graphene / Ionic Liquid Electrical Generator.

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Thu, 08 Mar 2012, 12:28pm #17
DAP
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Exciton-polariton mediated superconductivity

In order to evidence experimentally the light-mediated superconductivity, one could measure the in-plane differential photoconductivity of the microcavity. The carriers need to be injected in the n-doped quantum well from metallic contacts. The polariton condensate may be created by resonant optical pumping. The sign of differential photoconductivity is expected to change from negative to positive at the onset of superconductivity.

In conclusion, we propose a new mechanism to achieve superconductivity, based on microcavity polaritons. A Bose-Einstein condensate of polaritons is offered as a mediator for the interactions between electrons in a specially engineered device. The magnitude of attraction increases linearly with the condensate density, allowing for an external control of the binding energy, and therefore of the critical temperature. With devices that have demonstrated polariton BEC up to room temperature, our findings suggest that exciton-polaritons could be promising candidates to achieve high-temperature superconductivity in a semiconductor structure, with critical temperatures only limited by that of the BEC.

Nodal Quasiparticle Meltdown in Ultra-High Resolution Pump-Probe Angle-Resolved Photoemission

Quasiparticle excitations in cuprate superconductors and their relations to superconductivity


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