The robot rotates in response to an external magnetic field, producing translational motion that allows it to navigate through a glass channel that is modeled as a fallopian tube. Researchers ...

Shake the filings into the long thin section of the tube. Magnetize the filings by stroking a magnet the length of the tube several times. Use a zippy magnet, a 1/2 inch diameter NdBFe magnet works ...

The magnetic structures, visually resembling idealized magnetic flux tubes, are generated self-consistently by numerical simulation of the interaction of magnetic buoyancy and a localized velocity ...

Abstract: A major problem in the application of lightweight traveling-wave tubes focused by means of periodic permanent-magnet assemblies has been poor performance at extremes of ambient temperatures.