Ferropaper Is New Technology For Small Motors, Robots

Ferropaper Is New Technology For Small Motors, Robots: "Researchers at Purdue University have created a magnetic 'ferropaper' that might be used to make low-cost 'micromotors' for surgical instruments, tiny tweezers to study cells and miniature speakers. The material is made by impregnating ordinary paper - even newsprint - with a mixture of mineral oil and 'magnetic nanoparticles' of iron oxide. The nanoparticle-laden paper can then be moved using a magnetic field."