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    Droplet actuator devices and methods employing magnetic beads
    32.
    发明授权
    Droplet actuator devices and methods employing magnetic beads 有权

    公开(公告)号：US10379112B2

    公开(公告)日：2019-08-13

    申请号：US14719731

    申请日：2015-05-22

    Applicant: Advanced Liquid Logic, Inc. ,  Duke University

    Inventor： Ramakrishna Sista ,  Vamsee K. Pamula ,  Michael G. Pollack ,  Vijay Srinivasan ,  Allen E. Eckhardt ,  Richard B. Fair

    IPC: B01L3/00 ,  G01N27/447 ,  G01N33/543 ,  C12M1/12 ,  G01N35/10 ,  G01N35/00

    Abstract: A method of providing a droplet in contact with a magnetically responsive bead and having a reduced quantity of a substance. The method generally includes the steps of (a) providing a droplet actuator comprising: (i) a substrate comprising electrodes arranged for conducting droplet operations on a surface; (ii) a starting droplet comprising: (1) one or more magnetically responsive beads; (2) a starting quantity of the substance; and (3) a starting volume; (b) magnetically immobilizing the one or more magnetically responsive beads at a location which is at a distance from a target droplet splitting zone; (c) conducting one or more droplet operations comprising droplet dividing operations selected to divide the combined droplet to yield a set of droplets comprising: (i) a droplet comprising substantially all of the one or more magnetically responsive beads and having a decreased quantity of the substance relative to the starting concentration; and (ii) a droplet substantially lacking the magnetically responsive beads.

    Bead manipulation techniques
    38.
    发明授权
    Bead manipulation techniques 有权
    珠操纵技术

    公开(公告)号：US09050606B2

    公开(公告)日：2015-06-09

    申请号：US14491231

    申请日：2014-09-19

    Applicant: ADVANCED LIQUID LOGIC, INC.

    Inventor： Vamsee K. Pamula ,  Arjun Sudarsan ,  Ramakrishna Sista

    IPC: G01N15/06 ,  G01N33/00 ,  G01N33/48 ,  B03C5/00 ,  G01N33/543 ,  B03C1/01 ,  B03C1/28 ,  B03C5/02

    CPC classification number: B03C7/026 ,  B01L3/50273 ,  B01L3/502761 ,  B01L2200/0647 ,  B01L2300/0887 ,  B01L2400/0424 ,  B01L2400/0427 ,  B03C1/01 ,  B03C1/288 ,  B03C5/00 ,  B03C5/005 ,  B03C5/026 ,  B03C2201/26 ,  G01N33/54326

    Abstract: The invention provides a method of redistributing magnetically responsive beads in a droplet. The method may include conducting on a droplet operations surface one or more droplet operations using the droplet without removing the magnetically responsive beads from the region of the magnetic field. The droplet operations may in some cases be electrode-mediated. The droplet operations may redistribute and/or circulate the magnetically responsive beads within the droplet. In some cases, the droplet may include a sample droplet may include a target analyte. The redistributing of the magnetically responsive beads may cause target analyte to bind to the magnetically responsive beads. In some cases, the droplet may include unbound substances in a wash buffer. The redistributing of the magnetically responsive beads causes unbound substances to be freed from interstices of an aggregated set or subset of the magnetically responsive beads.

    Abstract translation: 本发明提供了一种在液滴中重新分布磁响应珠的方法。 该方法可以包括在液滴操作表面上使用液滴进行一个或多个液滴操作，而不从磁场的区域移除磁响应珠。 在某些情况下，液滴操作可能是电极介导的。 液滴操作可以在液滴内重新分布和/或循环磁响应珠。 在一些情况下，液滴可以包括样品液滴可以包括靶分析物。 磁响应珠的重新分布可能导致目标分析物结合磁响应珠。 在一些情况下，液滴可以包括洗涤缓冲液中的未结合物质。 磁响应珠子的重新分布导致未结合物质从磁性响应珠粒的聚集或子集的空隙中释放出来。

    Droplet Dispensing Device and Methods
    39.
    发明申请
    Droplet Dispensing Device and Methods 审中-公开
    滴液分配装置及方法

    公开(公告)号：US20150075985A1

    公开(公告)日：2015-03-19

    申请号：US14541825

    申请日：2014-11-14

    Applicant: ADVANCED LIQUID LOGIC, INC.

    Inventor： Michael G. Pollack ,  Vamsee K. Pamula ,  Vijay Srinivasan

    IPC: B01L3/00 ,  G01N27/447

    CPC classification number: B01L3/502761 ,  B01F13/0071 ,  B01F13/0076 ,  B01L3/502792 ,  B01L2200/0605 ,  B01L2200/0647 ,  B01L2200/0668 ,  B01L2200/16 ,  B01L2300/0819 ,  B01L2300/0864 ,  B01L2300/0867 ,  B01L2300/088 ,  B01L2300/089 ,  B01L2400/0427 ,  B01L2400/043 ,  G01N27/447

    Abstract: The invention provides nonlimiting examples of structures for and methods of dispensing droplets in a droplet actuator. The droplet actuator structures and methods of the invention exhibit numerous advantages over droplet actuators of the prior art. In various embodiments, the structures and methods of the invention provide, among other things, improved efficiency, throughput, scalability, and/or droplet uniformity, as compared with existing droplet actuators. Further, in some embodiments, the droplet actuators provide configurations for improved methods of loading and/or unloading fluid and/or droplets. In yet other embodiments, the droplet actuators provide fluid loading configurations for loading numerous fluid reservoirs in a substantially simultaneous and/or substantially sequential manner.

    Abstract translation: 本发明提供了用于在液滴致动器中分配液滴的结构的方法和方法的非限制性实例。 本发明的液滴致动器结构和方法与现有技术的液滴致动器相比表现出许多优点。 在各种实施例中，与现有的液滴致动器相比，本发明的结构和方法尤其提供了改进的效率，吞吐量，可扩展性和/或液滴均匀性。 此外，在一些实施例中，液滴致动器提供用于加载和/或卸载流体和/或液滴的改进方法的构造。 在其他实施例中，液滴致动器提供用于以基本上同时和/或基本顺序的方式装载多个流体储存器的流体加载构造。

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