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Remote manipulation of micronanomachines containing magnetic nanoparticles

机译:远程控制包含磁性纳米粒子的微纳米机

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We report remote manipulation of micronanomachines containing magnetic nanoparticles. Surface-modifiednFe3O4 nanocrystals were synthesized as doping agents of the photopolymerizable resin, which was pinpointnwritten by femtosecond laser-induced two-photon photopolymerization to create microsprings. Owing to thennature of superparamagnetism of Fe3O4 nanoparticles, force exerted to the microsprings relies sensitivelynon the field gradient of the external ferromagnet, and various motions like elongation, bending, and swingnare achieved in a well-controllable remote manner. As a noncontact, sensitive, easy, and environmentallynfriendly approach, the magnetic driving of micronanomachines may play an important role for nano andnbiological applications. © 2009 Optical Society of America
机译:我们报告包含磁性纳米粒子的micronanomachines的远程操纵。合成了表面改性的nFe3O4纳米晶体作为光聚合树脂的掺杂剂,通过飞秒激光诱导的两光子光聚合作用精确地形成了微弹簧。由于Fe3O4纳米粒子的超顺磁性,施加到微弹簧上的力敏感地不依赖于外部铁磁体的磁场梯度,并且以可控的远程方式实现了诸如伸长,弯曲和摆动等各种运动。作为一种非接触,灵敏,简单且环保的方法,微纳机械的磁驱动可能在纳米和生物应用中发挥重要作用。 ©2009美国眼镜学会

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