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A comment on Electromagnetic Levitation Quadcopter [video]. Parent comment
Polymagnets are just magnets with a pattern of multiple north-south poles on one face. [2]
At best you could have a Halbach array on a single polymagnet and have it be just as effective as individual magnets in the same pattern.
Though for large scale applications there wouldn't be much point as you could just use cheaper off the shelf magnets.
[1] https://www.kjmagnetics.com/images/blog/halbachvsalt.png [2] https://i.imgur.com/Nz9QJTV.png
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Polymagnets are just magnets with a pattern of multiple north-south poles on one face. [2]
At best you could have a Halbach array on a single polymagnet and have it be just as effective as individual magnets in the same pattern.
Though for large scale applications there wouldn't be much point as you could just use cheaper off the shelf magnets.
[1] https://www.kjmagnetics.com/images/blog/halbachvsalt.png [2] https://i.imgur.com/Nz9QJTV.png