Putting the right kind of strain on a patch of graphene can make super-strong pseudo-magnetic fields, a new study says. The finding sheds new light on the properties of electromagnetism, not to mention the odd properties of graphene, according to researchers at Lawrence Berkeley National Laboratory. When graphene is stretched to form "nanobubbles," the stress causes electrons to behave as if they were subject to huge magnetic fields, the size of which have never been seen in a lab before. The study is published today in the journal Science.
Michael Crommie, a senior scientist in the Materials Sciences Division at Berkeley Lab and a physics professor at the University of California-Berkeley, says this is a completely new effect that has no counterpart in any other condensed matter system.
Since scientists began studying magnetic fields more than 100 years ago, no one has been able to sustain big magnetic fields for very long. The record is 85 tesla -- a measurement of electromagnetism named for Nikola Tesla -- and it only lasted a few thousandths of a second. Make it stronger than that, and the magnets blow themselves apart.
But in Crommie's study, electrons inside carbon atoms behaved as if they were subjected to 300 tesla. It has to do with the way graphene is constructed, which leaves one out of every four valence electrons free to hop around. The other three electrons form tight hexagonal chains. When graphene sheets are strained -- for instance, when they're rolled up into carbon nanotubes or stretched into nanobubbles -- the bond lengths between atoms change, and electrons hop differently.
The effect is so strong that it works at room temperature. Berkeley Lab's news site has a more detailed description here.
The finding could lead to better electronic and magnetic devices, Crommie says. Controlling where electrons exist and how they move is an essential feature of all electronic devices, he notes.
"New types of control allow us to create new devices, and so our demonstration of strain engineering in graphene provides an entirely new way for mechanically controlling electronic structure in graphene," he says.
Wow, 300 tesla for a continuous magnetic field. Imagine the different types of; very light electric generators, portable MRI's, etc, etc, this would make...
If they can find a way to manipulate the Graphene nanobubbles turning them off and on or changing poles like they can do with current in an electric motor with little or no loss of force applied then this may qualify for the fantasy perpetual motion machine everyone who played with magnets dreamt about…
This could be used as a radiation shield for spacecraft?
Perpetual motion machines are kids stuff. Think more on field motion machines. You can use this technology to react with the earth;s magnetic field and zooom.
I could be wrong but couldnt this make fusion viable? At least able to produce more energy than it consumes?
My current understanding is that overheating of the magnets is the reason to power off the fusion plants but with 300T of confinement couldn't it give the plant enough run time to be in the ++(at the very least)? Also, since this article says it runs at room temp could run longer if u could bathe it in liquid helium?
Is it strong enough to alter time? How 'bout applying it in space advancements like creating wormholes since it has can produce and sustain pseudo-magnetic fields?
nothing can produce more energy than it consumes.
Have they created Avatar's Unobtanium?
@gdepratt Don't you mean The Core's Unobtainium? (the movie with hilary swank where the core stops spinning :P )
The article calls it "pseudo maganetic fields"...is it really a magnetic field or not?
Also, like RLB2 said, it could make some very efficient and powerful electric motors without the need for expensive neodymium magnets...
It could usher in a new era of automobiles as newer, more powerful engines can be produced as well as battery tech (which use the carbon nanotubes or whatever) to increase energy density and quicken charge times.
This sounds like a break-through in my opinion, even though it may have been discovered accidentally. But aren't most break-through accidental?
It sounds to me like the "psuedo" in "psuedo-magnetic" means there are likely no magnetic fields lines to speak of which no flux density or anything . The article makes it seem as tho the electrons assume an arrangement under when exposed to strain forces that is normally only possible when exposed to 300 Tesla. If the electrons are confined to the graphene which they are then the advances probably wont open up wormholes or allow fusion but who knows mabey just a better iphone .
I think we may have stumbled upon the miracle substance that is going to usher us into a new age.
We figured out how to mass produce it and we still don't know too much about it. The properties it has shown are remarkable.
This makes me believe it needs to be tested as an ignition pellet for fusion, as possible wormhole ship hulls, crazy body armor that deflects bullets, etc.
Graphene will be involved with some pretty cool stuff...
Don't forget to find out what graphene actually is... graphene is nothing more than a single layer of atomic particles. If you get multiple layers of graphene, you essentially get graphite and other graphitic materials. The graphene layer itself is a marvel and can do some extraordinary things, but dont expect to see graphene-vests or graphene space ship hulls...
Most people here seem to have read this article as if it said that they generated a 300T magnetic field. It did not. It said if found a way to make a material (graphene) BEHAVE as if it was exposed to 300T. It never said that there is a 300T field. This article is just about how to control graphene to do useful things.
Very promising stuff...
Pseudo means false or fraudulent. That means the material makes the electrons move around the same way they would when exposed to a magnetic field but aren't actually creating or being exposed to magnetic field lines.
When they say pseudo-magnetic fields, that is the same as saying pseudo-attack during sleep; where you are having a nightmare and your physical body reacts like it would when really under attack but nothing is actually being done to you.
Hope you get it.
thats very awesome. the applications of it are almost endless.
"super-strong pseudo-magnetic fields"
Just speculating here folks, this may be the missing link in nano science that combines the four forces of nature into one unified field theorem, a cosmologist dream, the week and strong nuclear, the electromagnetic field and gravity, all combined into one force "pseudo-magnetic field." Is a "pseudo-magnetic field," Pulling a force out of virtual space, "zero point energy," or "vacuum energy" as first proposed by Albert Einstein and Otto Stern in 1913.
"Zero-point energy is the lowest possible energy that a quantum mechanical physical system may have and is the energy of the ground state. The term arises commonly in reference to the ground state of the quantum harmonic oscillator and its null oscillations. In cosmology, the vacuum energy is one possible explanation for the cosmological constant. The variation in zero-point energy as the boundaries of a region of vacuum move leads to the Casimir effect, which is observable in nanoscale devices."
Also note, and this may be very important in finding out what this new pseudo force carrying material is all about and that Pyrolytic carbon is a material similar to graphite and it is the most room temperature diamagnetic material there is.
Pyrolytic carbon “It is more thermally conductive along the cleavage plane than graphite, making it one of the best planar thermal conductors available. It is also more diamagnetic against the cleavage plane, exhibiting the greatest diamagnetism (by weight) of any room temperature diamagnetic. It is even possible to levitate reasonably pure and sufficiently ordered samples over rare earth permanent magnets.”
Here is a link that talks more in depth on the subject from Berkeley labs.
add http:// to the beginning of the above link
with "speculating" being the key word here...
So the fact that it is behaving as if subjected to 300 Tesla
Could it still be used to make a super/more powerful electric motor?
holy crap, does nobody here read all the previous posts before making their own comments?
So... could it?
Memetic polycarbon jumpsuits and Zeiss-Ikon corneal implants...
I for one welcome our new pseudo-magnetic overlords.
If it is acting like it is under the force of 300 Tesla, then is there any magnetic force surrounding it at all?
As far as it seems to me, this isn't giving off any magnetism, but seems to take more than it should.
All the hype you guys have seems a little premature. Don't get me wrong, it probably has novel applications, such as a shielding for spacecraft and possibly structural properties for electronics, but not as Godlike as you all seem to make it out to be.