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    • 10. 发明授权
    • Process for manipulating microscopic, dielectric particles and a device
therefor
    • 用于操作微观电介质颗粒的方法及其装置
    • US6149789A
    • 2000-11-21
    • US508079
    • 1995-07-27
    • Wolfgang BeneckeBernd WagnerGunter FuhrRolf HagedornThorsten Muller
    • Wolfgang BeneckeBernd WagnerGunter FuhrRolf HagedornThorsten Muller
    • B01F13/00B01J19/00B03C5/00B03C5/02G01N27/447G01N27/26
    • B01F13/0077B01F13/0076B01J19/0093B03C5/005B03C5/026B03C5/028B01F13/0059B01J2219/00853
    • Disclosed is a process for manipulating microscopic dielectric particles in which particles are exposed to an electric field. In disadvantaged processes the particles are exposed to inhomogeneous electric field and are polarized by them. The polarized particles are moved in the direction of higher field strength. These processes permit no reversal of the traveling direction of the particles. The particles are enriched at the electrode so that they cannot be retained in free space. In the invented process the particles are exposed to high-frequency field traveling in one or more prescribed direction, by which the particles are subject to a force which sets them in a motion that is strongly synchronous to the field. With the aid of a device for carrying out the invented process, the particles can be manipulated very flexibly. By means of linearly or circularly disposed electrodes, the particles can be moved on linear paths in any direction including through branched microstructures, they can be separated according to their dielectric properties and retained without contact. Applications are in the fields of biotechnology and molecular separation, focussing and microtransport technology.
    • 公开了一种操作微粒介质颗粒的方法,其中颗粒暴露于电场。 在不利的过程中,颗粒暴露于不均匀的电场,并被它们极化。 极化粒子沿高场强的方向移动。 这些处理不允许反转颗粒的行进方向。 颗粒在电极处富集,使得它们不能保留在自由空间中。 在本发明的方法中,颗粒暴露于在一个或多个规定方向上行进的高频场,通过该方法,颗粒受到将其设置成与场强同步的运动的力。 借助于用于实施本发明方法的装置,可以非常灵活地操纵颗粒。 通过线性或圆形设置的电极,颗粒可以在包括通过分支微结构的任何方向上在线性路径上移动,它们可以根据其介电性质分离并保持而不接触。 应用领域包括生物技术和分子分离,聚焦和微传输技术。