柏林洪堡大学的生物物理学家京特·富尔于1989年2月发明了一种超微型电动机,其直径只有100μ,也就是说比一根头发还细。该电机的转子是一个微型塑料或玻璃球,悬浮于定子中,定子是玻璃薄壳制成的,定子和转子间充满液体,在定子上装有四个头发粗细的针,起到电机极靴的作用。当在针上通电后,则转子(塑料微球)就会极化,其表面上会形成符 Biofuels, a biophysicist at the Humboldt University in Berlin, invented an ultra-miniature motor in February 1989 with a diameter of only 100μ, which is smaller than a single hair. The motor rotor is a miniature plastic or glass ball, suspended in the stator, the stator is made of thin glass shell, filled with liquid between the stator and rotor, the stator is equipped with four hair thickness of the needle, the motor pole boots effect. When energized on the needle, the rotor (plastic microspheres) polarizes, forming a surface on the surface