Fluidic droplet coalescence
    1.
    发明申请
    Fluidic droplet coalescence 审中-公开
    流体液滴聚结

    公开(公告)号:US20070195127A1

    公开(公告)日:2007-08-23

    申请号:US11698298

    申请日:2007-01-24

    IPC分类号: B41J2/06

    摘要: The present invention generally relates to systems and methods for the control of fluidic species and, in particular, to the coalescence of fluidic droplets. In certain instances, the systems and methods are microfluidic. In one aspect, the invention relates to systems and methods for causing two or more fluidic droplets within a channel to coalescence. The fluidic droplets may be of unequal size in certain cases. In some embodiments, a first fluidic droplet may be caused to move at a first velocity, and a second fluidic droplet may be caused to move at a second velocity different from the first velocity, for instance, substantially greater than the first velocity. The droplets may then coalesce, for example, upon application of an electric field. In the absence of an electric field, in some cases, the droplets may be unable to coalesce. In some cases, two series of fluidic droplets may coalesce, one or both series being substantially uniform. For instance, one series of droplets may have a distribution of diameters such that no more than about 5% of the droplets have a diameter greater than about 10% of the average diameter. In certain cases, one or more series of droplets may each consist essentially of a substantially uniform number of entities of a species therein (i.e., molecules, cells, particles, etc.). The fluidic droplets may be coalesced to start a reaction, and/or to stop a reaction, in some cases. For instance, a reaction may be initiated when a species in a first droplet contacts a species in a second droplet after the droplets coalesce, or a first droplet may contain an ongoing reaction and a second droplet may contain a species that inhibits the reaction. Other embodiments of the invention are directed to kits or methods for promoting the coalescence of fluidic droplets.

    摘要翻译: 本发明一般涉及用于控制流体物种的系统和方法,特别是涉及流体液滴聚结的系统和方法。 在某些情况下,系统和方法是微流体。 在一个方面,本发明涉及用于使两个或多个流体液滴在通道内聚结的系统和方法。 在某些情况下,流体液滴的尺寸可能不相等。 在一些实施例中,可以使第一流体液滴以第一速度移动,并且可以使第二流体液滴以不同于第一速度的第二速度移动,例如基本上大于第一速度。 例如,当施加电场时,液滴可以聚结。 在没有电场的情况下,在一些情况下,液滴可能不能聚结。 在一些情况下,两系列流体液滴可以聚结,一个或两个串联基本均匀。 例如,一系列液滴可以具有直径分布,使得不超过约5%的液滴具有大于平均直径的约10%的直径。 在某些情况下,一个或多个液滴系列可以各自基本上由基本上一致数量的物质实体(即分子,细胞,颗粒等)组成。 在某些情况下,流体液滴可能被聚结起始反应,和/或停止反应。 例如,当液滴聚结之后,当第一液滴中的物质接触第二液滴中的物质时,或者第一液滴可能含有正在进行的反应,并且第二液滴可以含有抑制反应的物质时,可以开始反应。 本发明的其它实施方案涉及用于促进流体液滴聚结的试剂盒或方法。

    Electronic control of fluidic species
    6.
    发明申请
    Electronic control of fluidic species 有权
    流体物种的电子控制

    公开(公告)号:US20070003442A1

    公开(公告)日:2007-01-04

    申请号:US11360845

    申请日:2006-02-23

    IPC分类号: B01L3/00

    摘要: Various aspects of the present invention relate to the control and manipulation of fluidic species, for example, in microfluidic systems. In one aspect, the invention relates to systems and methods for making droplets of fluid surrounded by a liquid, using, for example, electric fields, mechanical alterations, the addition of an intervening fluid, etc. In some cases, the droplets may each have a substantially uniform number of entities therein. For example, 95% or more of the droplets may each contain the same number of entities of a particular species. In another aspect, the invention relates to systems and methods for dividing a fluidic droplet into two droplets, for example, through charge and/or dipole interactions with an electric field. The invention also relates to systems and methods for fusing droplets according to another aspect of the invention, for example, through charge and/or dipole interactions. In some cases, the fusion of the droplets may initiate or determine a reaction. In a related aspect of the invention, systems and methods for allowing fluid mixing within droplets to occur are also provided. In still another aspect, the invention relates to systems and methods for sorting droplets, e.g., by causing droplets to move to certain regions within a fluidic system. Examples include using electrical interactions (e.g., charges, dipoles, etc.) or mechanical systems (e.g., fluid displacement) to sort the droplets. In some cases, the fluidic droplets can be sorted at relatively high rates, e.g., at about 10 droplets per second or more. Another aspect of the invention provides the ability to determine droplets, or a component thereof, for example, using fluorescence and/or other optical techniques (e.g., microscopy), or electric sensing techniques such as dielectric sensing.

    摘要翻译: 本发明的各个方面涉及流体物质的控制和操作,例如在微流体系统中。 一方面,本发明涉及使用例如电场,机械改变,中间流体等的添加来制造由液体包围的流体液滴的系统和方法。在一些情况下,液滴可以各自具有 其中的实体数量基本一致。 例如,95%或更多的液滴可以各自包含相同数量的特定物种的实体。 另一方面,本发明涉及用于将流体液滴分成两个液滴的系统和方法,例如通过与电场的电荷和/或偶极相互作用。 本发明还涉及根据本发明另一方面的用于熔融液滴的系统和方法,例如通过电荷和/或偶极相互作用。 在一些情况下,液滴的融合可引发或确定反应。 在本发明的相关方面,还提供了允许在液滴内进行流体混合的系统和方法。 在另一方面,本发明涉及用于分选液滴的系统和方法,例如通过使液滴移动到流体系统内的某些区域。 实例包括使用电相互作用(例如电荷,偶极子等)或机械系统(例如,流体位移)来对液滴进行分类。 在一些情况下,流体液滴可以以相对较高的速率进行分选,例如每秒约10个液滴或​​更多。 本发明的另一方面提供了例如使用荧光和/或其他光学技术(例如显微镜)或诸如电介质感测的电传感技术来确定液滴或其组分的能力。