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    • 36. 发明申请
    • Spintronic magnetoresistive device, production method thereof and applications of same
    • 自旋电子磁阻器件及其制造方法及应用
    • US20070097555A1
    • 2007-05-03
    • US11512758
    • 2006-08-30
    • Nicolas Garcia
    • Nicolas Garcia
    • G11B5/33G11B5/127
    • G11B5/39B82Y25/00G01R33/093H01F1/0063H01F10/3227
    • The invention relates to the production of magnetic field sensor devices whose operation is based on the phenomenon of ballistic magnetoresistance (BMR). The inventive spintronic magnetoresistive device differs from other existing devices in that the nanocontacts are formed by the inclusion of one or more micro and/or nanometric ferromagnetic particles located between two electrodes which serve as contacts with suitable metallic scales and/or electrochemical deposits. The configuration of the particle or particles forming the contact area (as well as the materials used in the electrodes and the particles) can vary. The aforementioned magnetic sensors display high magnetoresistance (MR) values and, more importantly, said devices remain stable for long periods of time.
    • 本发明涉及一种基于弹道磁阻(BMR)现象的磁场传感器装置的生产。 本发明的自旋电子磁阻器件与其它现有器件不同之处在于纳米接触是通过包含位于两个电极之间的一个或多个微型和/或纳米级铁磁性微粒而形成的,这两种电极用作与适当金属垢和/或电化学沉积物的接触。 形成接触面积的颗粒或颗粒的形状(以及电极和颗粒中使用的材料)可以变化。 上述磁传感器显示高磁阻(MR)值,更重要的是,所述装置长时间保持稳定。
    • 40. 发明申请
    • Magnetic polymer microbeads and method for preparing the same
    • 磁性聚合物微珠及其制备方法
    • US20060130192A1
    • 2006-06-15
    • US11299800
    • 2005-12-13
    • Wen-Chien LeeTing-Hao Chung
    • Wen-Chien LeeTing-Hao Chung
    • H01F1/04
    • B82Y25/00B82Y10/00H01F1/0063
    • Magnetic polymer microbeads and a method for preparing the same are provided. The method for preparing the magnetic polymer microbeads includes the following steps: preparing polymer particles; immersing the polymer particles into a solution in order to swell the polymer particles; adding magnetic nanoparticles to the solution and allowing the magnetic nanoparticlse to enter an interior of the polymer particles; and separating the polymer particles from the solution, wherein the polymer particle is made of polystyrene, or a copolymer containing styrene, and the solution includes a medium polar solvent. The average particle size of the magnetic polymer microbeads of the present invention ranges from submicrons to microns. The magnetic polymer microbeads of the present invention have high magnetization, and the various functional groups can be introduced onto the surfaces thereof. Therefore, the magnetic polymer microbeads of the present invention can be applied in many areas, and thereby they have high economic value.
    • 提供了磁性聚合物微珠及其制备方法。 制备磁性聚合物微珠的方法包括以下步骤:制备聚合物颗粒; 将聚合物颗粒浸入溶液中以使聚合物颗粒溶胀; 向溶液中加入磁性纳米颗粒并使磁性纳米颗粒进入聚合物颗粒的内部; 并从溶液中分离聚合物颗粒,其中聚合物颗粒由聚苯乙烯制成,或含有苯乙烯的共聚物,该溶液包括中等极性溶剂。 本发明的磁性聚合物微珠的平均粒径为亚微米至微米。 本发明的磁性聚合物微珠具有高的磁化强度,并且可以将各种官能团引入其表面。 因此,本发明的磁性聚合物微珠可以应用于许多领域,因此具有较高的经济价值。