Artificial Magnetic Monopoles Created
Researchers from Cologne, Munich and Dresden have created artificial magnetic monopoles by merging tiny magnetic whirls called "skyrmions". At the point at which they merge, a monopole appears. Physicist Paul Dirac postulated in 1931 that a similar kind of particle would exist.
(An emergent magnetic monopole)
Depiction of the merging of two magnetic vortices,
so-called skyrmions, in the magnetic structure of a material.
The point at the which the vortices merge displays the
properties of an emergent magnetic monopole.
When the monopole moves along the direction of the vortices
a skyrmion is created or destroyed.
(Credit: Ch. Schütte/University of Cologne
When a magnet is divided, a new magnet with north and south poles is always created. However, a monopole, i.e. a north pole without a south pole or a south pole without a north pole has not yet been discovered. In the current edition of the journal Science, researchers from Cologne, Munich and Dresden describe the discovery of new type of artificial monopole in a solid, i.e. particles, which have similar characteristics to monopoles, but which only exist within materials.
Larry Niven introduced science fiction readers to the idea of magnetic monopoles in his 1973 novel Protector. Appropriately, they were found within an exotic material - the nickel-iron core of asteroids.
Nick Sohl was coming home.
...He had gone mining in Saturn's rings, with a singleship around him and a shovel in his hand (for the magnets used to pull monopoles from asteroidal iron did look remarkably like shovels)...
A century ago monopoles had been mere theory and conflicting theory at that. Magnetic theory said that a north magnetic pole could not exist apart from a south magnetic pole, and vice-versa. Quantum theory implied that they might exist independently.
The first permanent settlements had been blooming among the biggest Belt asteroids when an exploring team found monopoles scattered through the nickel-iron core of an asteroid.
(Read more about Niven's monopole mining)
Via Science Daily; thanks to Broklynite for the tip and the reference on the story.
Scroll down for more stories in the same category. (Story submitted 6/24/2013)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Shape-Memory Metal Transforms Millions Of Times
'Annealed in any shape for a time, and codified, the structure of that shape is retained down to the molecules.' - Samuel R. Delany
Growing Metal In The Shape You Want
What more do you need, engineers?
Laser Etching Makes Metal Super-Hydrophobic
'The water flowed off those walls without binding tension.'- Frank Herbert, 1965.
3D Printing Your Science-Fictional Metals
I love science-fictional materials!
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
IBM's Grain Of Sand Computer
'Our ancestors... thought to make the very sand beneath their feet intelligent...'
Liquid Metal Shape-Changing 'Soft Robotics'
'A mimetic poly-alloy... 'What the hell does that mean?''
The Hammock Caravan And Italo Calvino's Octavia
'Now I will tell you how Octavia, the spider-web city, is made.'
Super-Resolution Microscopy Provides '4D' Views
View the magnified interior of living cells.
Have I Seen The Tesla Roadster Story Before?
'Only it wasn't a vessel. It was an automobile...'
Watch 'Do You Trust This Computer' For Free Today
Thanks for making this available, Elon.
Self-Driving Car Ticketed
This just missed making my day.
Elon Musk Tweets Versions Of Clarke's Operation Cleanup
'Fortunately, the old orbital forts were superbly equipped for this task.'
Burner Generates Temporary Phone Numbers
'Interesting phone system he's got, by the way...'
Walmart’s Autonomous Robot Bees
Everyone loves bees.
EA Created AI That Taught Itself To Play Battlefield
Harmless fun for computer scientists.
Is Teleportation A Death Sentence?
'A long trail of dead, he thought, left across the stars...'
New Brain Scanner Lets You Move Around
'In Bob Arctor's living room his thousand dollar custom-quality cephscope crafted by Altec...'
Can An Entire Brain Be Simulated In A Computer?
'The miles of relays and photocells had given way to the spongy globe of platinum iridium about the size of the human brain.'
Physicists Try To Turn Light Into Matter
If E=mc squared, then... m=E/c squared!
Save Your Brain's Connectome, Upload Yourself Elsewhere
'You've got remote storage. How regular is the update?'
More SF in the News Stories
More Beyond Technovelgy science news stories