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FERROMAGNETIC PARTICLES AS ULTRA-SENSITIVE NON-LINEAR RESPONSE LABELS FOR MAGNETIC PARTICLES IMAGING (MPI) AND SENSING APPLICATIONS

机译:磁性粒子成像(MPI)和传感应用的铁磁颗粒作为超敏感的非线性响应标签

摘要

A significant enhancement of detection capabilities of the room temperature MPQ is seen using optical lithography-defined, ferromagnetic iron-nickel alloy microdisks. Irreversible transitions between strongly non-collinear (vortex) and a collinear single domain states, driven by an ac magnetic field, translate into a nonlinear magnetic response that enables ultrasensitive detection of material at relatively small magnetic fields.
机译:使用光学光刻定义的铁磁性铁镍合金微小微小微小,可以显着提高室温MPQ的检测能力。 由交流磁场驱动的强不相连(涡旋)和共线单结构域状态之间的不可逆过渡,转化为非线性磁响应,使得在相对小的磁场中能够超细检测材料。

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