磁性奈米粒子
外观
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磁性奈米粒子(英语:magnetic nanoparticle)是一种可以使用磁场操控的奈米粒子。这种粒子一般是由两个部分组成,一个是磁性材料(常为铁、镍与钴),另一个是有功能的化学成分。奈米粒子的直径小于1微米(通常为1-100奈米),而较大的微珠(microbead)的直径为0.5-500微米。由若干个别磁性奈米粒子构成的团簇被称作磁性奈米珠(magnetic nanobead),直径为50-200奈米。[1][2]磁性奈米粒子的团簇是近一步组合成磁性奈米链的基础。[3]磁性奈米粒子最近已成为很多研究的焦点,这是因为它有一些具吸引力的性质,使它可能可以用于催化,例如基于奈米材料的催化、[4]生物医学[5]与组织特异靶向(tissue specific targeting)、[6]磁性可调胶体光子晶体、[7]微流控、[8]核磁共振成像、[9]磁性粒子成像、[10]储存装置、[11][12]环境整治、[13]奈流体、[14][15]滤光器、[16]缺陷感测器(defect sensor)、[17]磁冷却[18][19]与阳离子感测器。[20]
参考资料
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