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#1 2008-03-06 10:37:31
- noosfractal
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- From: Biosphere 1
- Registered: 2005-10-04
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Re: Magnetic Atoms Of Gold, Silver And Copper Have Been Obtained
http://www.sciencedaily.com/releases/20 … 100724.htm
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The magnetism of these nanoparticles is a permanent one (like iron) which, even at ambient temperature, is quite significant. This amazing behaviour has been obtained not just with gold (a phenomenon which had already been put forward as experimentally possible) but, in this research, nanoparticles of silver and copper (the atoms of which are intrinsically non-magnetic) with a size of 2 nm (0.000002 mm) have also been shown to be magnetic at ambient temperature.
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This discovery goes beyond the mere fact of converting non-magnetic elements to magnetic ones. These properties appear in smaller-sized particles that have never been seen in classical magnetic elements. In fact, they can be considered as the smallest magnets ever obtained. Moreover, such properties do not occur only at low temperatures but they are conserved, apparently without any degradation, at temperatures well above the ambient ones.
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#3 2008-05-04 14:04:42
- Terraformer
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- From: The Fortunate Isles
- Registered: 2007-08-27
- Posts: 3,907
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Re: Magnetic Atoms Of Gold, Silver And Copper Have Been Obtained
Nanomachines. That's what use they'd have. And computing. Don't forget computing.
Use what is abundant and build to last
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#5 2008-05-04 15:54:56
- noosfractal
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- From: Biosphere 1
- Registered: 2005-10-04
- Posts: 824
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Re: Magnetic Atoms Of Gold, Silver And Copper Have Been Obtained
Well, http://en.wikipedia.org/wiki/NVRAM for one.
But really, we don't understand magnetism as well as we do, say, electric charge. This sort of breakthrough could open up a whole world of applications. The first thing that comes to mind to me is the generation of high strength magnetic fields, which right now is materials-limited (the electro magnets explode if you try to generate too high a magnetic field), and power generation (you rotate wires in a magnetic field to generate electricity), but every new physics phenomena eventually becomes an industry (or two 
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