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    • 3. 发明申请
    • SHAPING OF MICROPARTICLES IN ELECTRIC-FIELD CAGES
    • 的微粒在elktrischen场CAGES表格
    • WO1995023020A1
    • 1995-08-31
    • PCT/DE1995000237
    • 1995-02-23
    • FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.FUHR, GünterVOIGT, AndreasHAGEDORN, RolfSCHNELLE, ThomasHORNUNG, JanMÜLLER, TorstenFIEDLER, StefanGLASSER, HenningWAGNER, Bernd
    • FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    • B01J02/00
    • B01J2/00B01J13/02B01J19/087
    • In the method proposed, microparticles suspended in a liquid or droplets suspended in a liquid with which they are immiscible are shaped by high-frequency electric fields in a three-dimensional electrode array (11a, 11b, 11c, 11d, 11e, 11f) of a size in the micrometre or submicrometer range and subsequently consolidated by prior art chemical bonding procedures or by physical methods. The disposition, geometry and control of the electrodes determine the shape of the particles. The particles themselves must have a conductivity and/or relative dielectric constant lower than the solution surrounding them. For some, this can be achieved only at certain frequencies in the kHz and MHz band which are determined by the passive electrical properties of the particles and the surrounding solution. The particles or droplets are repelled by the electrodes so that they are shaped in the free solution without making contact with any surface and can then be consolidated. This makes it possible to shape micrometre- and submicrometre-size particles of the kind required in chromatography, affinity biochemistry and medicine, as well as for filter systems.
    • 在不混溶的液体的其他的液态微颗粒或液滴悬浮在空间电极装置(11A,11B,11C,11D,11E,11F)在微米或亚微米通过高频电场的装置和此后已知的化学在它们的几何形状成形的尺寸为 固化的键合工艺或通过物理方法。 布置中,几何结构和驱动该电极确定颗粒的形状。 颗粒本身需要具有比周围的溶液中的较小的导电性和/或相对介电常数。 部分可以在此仅在在kHz某些频率并能够从所述颗粒的被动电性能和周围溶液来确定MHz范围内进行。 所述粒子或小滴,然后从电极推开,使得它们可以在不接触的表面形成,并且在自由溶液中凝固。 这使得有可能使微米和亚微米空间的粒子,在需要时,但是,例如,在层析,亲和生物化学,医学和技术过滤系统。