Does anyone know what size-range of metal particles can be driven by either electrical field or magnetic field? For example, should the size be nano-meter range or micrometer?

  • 1
    $\begingroup$ That depends by what you mean by driven and also how strong the fields are. $\endgroup$ – J. Shupperd Sep 21 '16 at 18:27

There is almost no limit to the size of a "particle" that can be moved by a magnetic field. See for example this picture (source)

enter image description here

which shows an entire hospital gurney being sucked into an MRI scanner. In this case the patient was injured but survived. Not all are that lucky.

Bottom line: with a sufficiently strong (and diverging) field, a ferromagnetic "particle" can be very large, and yet be moved.

| cite | improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.