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Use Quantum Levitation (QL) Magnetic Field Locking to remotely grab and then move a small device in the human body. Allow directed radiation, medicine or surgery via remote QL control.
If you've seen video of the Quantum Levitation experiment by the Tel Aviv University( see link) then you can easily
imagine this application of that technology.
One of the issues to overcome is the need to cool the disc with liquid nitrogen. The implant device would need to be well insulated and this might make it too large. an alternative would be to have the patient swallow a super-strong magnet ( with obvious safeguards - no other swallowed magnets ) and have cooled superconducting disks outside the body.
Maybe the need to cool the implant will be reduced and the issue overcome.
Surgery of the (near?) future!
Wired Article on Quantum Levitation
Wired Article on the physics with embedded YouTube video [justinj, Dec 09 2011]
||Attractive though this idea is, I see problems
using either a cooled or a magnetic implant.
||Can I suggest an inertial alternative?
||Simply implant a small device containing a 3-axis
gyro made of a dense metal, such as depleted
uranium. Once it is in place and has been spun
up, the patient can be conveniently rotated
around the device in three axes.
||Of course, translational movements will be harder,
but this is where the density (and hence intertia)
of the device become important. If the patient is
accelerated with sufficient violence in one
direction, the device's inertia will tend to keep it