Using ultra pure Neodymium 150 isotope nanoparticles 99.999% purity in vacuum binding them to the carbon nano tubes then using a modified 3D printer to align the nanotubes in a particular direction, then using metal 3D printing style of a high power electron laser to weld layer by layer at really high energy and applying electromagnetism to align the microcrystalline structure of the neodymium nanoparticles as it cools from the heat generated by the laser. The result would be an extremely strong, tightly pact superconducting neodymium magnet that should be protected from oxidizing as the O2 molecules couldn't penetrate through multi walled layers of the carbon nanotubes, kept in a super vacuum, supercooled environment. It should also be the purest Neodymium magnet, allowing us to design the field lines how we want. I think it could be far superior in strength also allowing for us to build 6, 8, and even twelve pole configuration magnets because of the ability to manipulate and design the field lines depends upon how we build the magnet. Also this should still display superconducting abilities. Just had this idea when it was mentioned that scientists have built a super capacitor capable of storing charges and releasing them with almost zero resistance. Any ideas?
Look into selective laser sintering printers (SLS). Sounds cool, good luck!
Might be able to build yourself too (see link)
http://3dprint.com/60563/you-sls-printer-for-2000/
This sounds like an interesting objective. I'm not familiar with Neodymium properties, but I would suggest that you break it down into a few smaller steps. Before going too far, you may want to verify that you can densify the materials without losing the nanoparticle characteristics either through sintering them to higher density or reacting them with the carbon nanotubes or other components. The nanoparticles are highly reactive and will sinter at much lower temperatures than bulk materials.
Carbon nanotubes can certainly protect neodymium. Could such neodymium act as a nano-compass ?
It would be interesting to see nano-magnetism unaffected by earth's magnetic field.
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