Purdue researchers 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. Babak Ziaie, a professor of electrical and computer engineering and biomedical engineering, holds a miniature birdlike shape made from the material. The wings move slowly, but the structure is not capable of flight. (Credit: Purdue University photo/Andrew Hancock)From Science Daily:
Science Daily (Jan. 6, 2010) — 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.
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