A DEVICE AND METHOD FOR MANIPULATING AND MIXING MAGNETIC PARTICLES IN A LIQUID MEDIUM
    3.
    发明申请
    A DEVICE AND METHOD FOR MANIPULATING AND MIXING MAGNETIC PARTICLES IN A LIQUID MEDIUM 审中-公开
    用于在液体介质中操作和混合磁性颗粒的装置和方法

    公开(公告)号:WO2008010111A3

    公开(公告)日:2008-10-30

    申请号:PCT/IB2007052410

    申请日:2007-06-21

    Inventor: RIDA AMAR

    Abstract: A device for manipulating and mixing magnetic particles (3) in a surrounding liquid medium, comprises at least one couple of magnetic poles (1,1') facing each other across a gap, the facing poles diverging from a narrow end of the gap to a large end of the gap, the poles (1,1') forming part of an electromagnetic circuit and being arranged to provide a magnetic field gradient in the gap region; and a reaction chamber (2) that is a part of a fluidic network for containing the said magnetic particles in suspension and placed in the gap of the said electromagnets poles (1,1'). The reaction chamber (2) preferably has at least one part which has a diverging cavity, arranged co-divergently in the diverging gap between the poles.

    Abstract translation: 用于在周围液体介质中操纵和混合磁性颗粒(3)的装置包括至少一对磁极(1,1'),所述磁极(1,1')跨越间隙彼此面对,所述面对磁极从所述间隙的窄端发散到 所述间隙的大端部,所述极(1,1')形成电磁电路的一部分并被布置成在所述间隙区域中提供磁场梯度; 以及反应室(2),其是流体网络的一部分,用于容纳所述磁性颗粒悬浮并放置在所述电磁体磁极(1,1')的间隙中。 反应室(2)优选地具有至少一个部分,该部分具有发散的空腔,其共同分散地设置在极之间的发散间隙中。

    A METHOD FOR MANIPULATING MAGNETIC PARTICLES IN A LIQUID MEDIUM
    4.
    发明申请
    A METHOD FOR MANIPULATING MAGNETIC PARTICLES IN A LIQUID MEDIUM 审中-公开
    一种用于在液体介质中操作磁性颗粒的方法

    公开(公告)号:WO2008007270A3

    公开(公告)日:2008-04-17

    申请号:PCT/IB2007052409

    申请日:2007-06-21

    Inventor: RIDA AMAR

    Abstract: A method of mixing magnetic particles (3) in a reaction chamber (2) that is part of a microfluidic device and that contains the said particles in suspension, comprises the steps: (a) providing an electromagnetic means (1,1 ',6, 7) to generate magnetic field sequences having polarity and intensity that vary in time and a magnetic field gradient that covers the whole space of the said reaction chamber (2); (b) applying a first magnetic field sequence to separate or confine the particles (3) so the particles occupy a sub-volume in the volume of the reaction chamber (2); (c) injecting a defined volume of the said reagent in the reaction chamber; and (d) applying a second magnetic field sequence to leads the particles (3) to be homogenously distributed and dynamically moving over a substantial portion of the whole reaction chamber volume.

    Abstract translation: 在作为微流体装置的一部分并且包含所述悬浮液的颗粒的反应室(2)中混合磁性颗粒(3)的方法包括以下步骤:(a)提供电磁装置(1,1',6 ,7)产生具有时间上变化的极性和强度的磁场序列和覆盖所述反应室(2)的整个空间的磁场梯度; (b)施加第一磁场序列以分离或限制颗粒(3),使得颗粒占据反应室(2)的体积中的子体积; (c)将限定体积的所述试剂注入反应室中; 和(d)施加第二磁场序列以使颗粒(3)均匀分布并在整个反应室体积的大部分上动态移动。

    TAILORED MAGNETIC PARTICLES AND METHOD TO PRODUCE SAME
    5.
    发明申请
    TAILORED MAGNETIC PARTICLES AND METHOD TO PRODUCE SAME 审中-公开
    定制磁性颗粒及其制造方法

    公开(公告)号:WO2006056579A2

    公开(公告)日:2006-06-01

    申请号:PCT/EP2005056178

    申请日:2005-11-23

    Inventor: RIDA AMAR

    CPC classification number: G01N33/5434 Y10T428/2991

    Abstract: Bio-functionalized magnetic particles have a non-magnetic material matrix which supports core/shell magnetic elements composed from a ferromagnetic core material and a shell material. The shell material can be chosen either among an antiferromagnetic material, a ferromagnetic material of a kind different from the core ferromagnetic material or a metal material. By a proper choice of materials and dimension tuning of both the core and the shell as well as the amount and the concentration of the magnetic elements within the non- magnetic matrix, the bio-functionalized magnetic particles is tailored to exhibit an enhanced magnetic energy. When subjected to an alternating magnetic field, the magnetic particles exhibit specific rotational dynamics in correspondence with the amplitude and the frequency of the applied magnetic filed. Aggregation structures of the magnetic particles are controlled and manipulated by the alternating magnetic field. The magnetic particles are functionalized by specific ligands for the probing and manipulating of biomolecules and chemical substances.

    Abstract translation: 生物功能化磁性颗粒具有非磁性材料基质,该基质支撑由铁磁芯材料和壳材料组成的核/壳磁性元件。 壳材料可以选自反铁磁材料,不同于铁心铁磁材料的铁磁材料或金属材料。 通过适当选择核心和壳体的材料和尺寸调整以及非磁性基质内的磁性元素的量和浓度,生物功能化的磁性颗粒被调整以显示增强的磁能。 当受到交变磁场时,磁性颗粒表现出与施加的磁场的幅度和频率相对应的特定旋转动力学。 磁性粒子的聚集结构受交变磁场控制和操纵。 磁性颗粒被特定的配体官能化,用于探测和操作生物分子和化学物质。

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