Scientists have created what they say is the world's smallest untethered flying robot, by taking a unique approach to its ...

A new prototype is laying claim to the title of smallest, lightest untethered flying robot. At less than a centimeter in ...

A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron, feel a magnetic force. Permanent magnets can come in lots of different shapes and ...

As a possible alternative, [Resetman] is experimenting with magnetic 3D printed gearboxes ... and an intermediate ring known as a flux modulator, containing equally spaced pieces of ferromagnetic ...

The diamagnetic material hovers above a rare-earth ring magnet, supporting a slender vertical shaft that holds the rotor and another magnetic bearing at the top. It’s fussy to adjust, ...