Remote manipulation of micronanomachines containing magnetic nanoparticles
Remote manipulation of micronanomachines containing magnetic nanoparticles
复制标题
含有磁性纳米颗粒的微纳米机器的远程操控
DOI：
10.1364/ol.34.000581
复制
发表时间：
2009-03-01
期刊：
影响因子：
3.6
通讯作者：
Sun, Hong-Bo
中科院分区：
文献类型：
--
作者：
Wang, Juan;Xia, Hong;Sun, Hong-Bo
我们报告远程操作的微型纳米机器含有磁性纳米粒子。合成了表面改性的Fe3O4纳米晶作为光聚合树脂的掺杂剂，利用飞秒激光诱导双光子光聚合制备了微弹簧。由于Fe3O4纳米颗粒的超顺磁性，施加到微弹簧上的力敏感地依赖于外部铁磁体的场梯度，并且以良好可控的远程方式实现各种运动，如伸长、弯曲和摆动。磁驱动作为一种非接触、灵敏、简单、环保的微纳米机器人驱动方法，在纳米和生物领域有着重要的应用前景。(C)2009年美国光学学会
We report remote manipulation of micronanomachines containing magnetic nanoparticles. Surface-modified Fe3O4 nanocrystals were synthesized as doping agents of the photopolymerizable resin, which was pinpoint written by femtosecond laser-induced two-photon photopolymerization to create microsprings. Owing to the nature of superparamagnetism of Fe3O4 nanoparticles, force exerted to the microsprings relies sensitively on the field gradient of the external ferromagnet, and various motions like elongation, bending, and swing are achieved in a well-controllable remote manner. As a noncontact, sensitive, easy, and environmentally friendly approach, the magnetic driving of micronanomachines may play an important role for nano and biological applications. (C) 2009 Optical Society of America