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    Droplet actuator devices and methods employing magnetic beads
    15.
    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.

    Droplet manipulation device
    16.
    发明授权
    Droplet manipulation device 有权

    公开(公告)号：US10022719B2

    公开(公告)日：2018-07-17

    申请号：US14935823

    申请日：2015-11-09

    Applicant: Duke University

    Inventor： Michael G. Pollack ,  Vamsee K. Pamula ,  Richard B. Fair

    IPC: G01N27/447 ,  B01L3/00 ,  B01F11/00 ,  B01F13/00 ,  G02B26/00 ,  C25B9/00 ,  B41J2/14

    Abstract: Methods are provided for manipulating droplets. The methods include providing the droplet on a surface comprising an array of electrodes and a substantially co-planer array of reference elements, wherein the droplet is disposed on a first one of the electrodes, and the droplet at least partially overlaps a second one of the electrodes and an intervening one of the reference elements disposed between the first and second electrodes. The methods further include activating the first and second electrodes to spread at least a portion of the droplet across the second electrode and deactivating the first electrode to move the droplet from the first electrode to the second electrode.

    Integrated Droplet Actuator for Gel Electrophoresis and Molecular Analysis
    20.
    发明申请
    Integrated Droplet Actuator for Gel Electrophoresis and Molecular Analysis 有权
    用于凝胶电泳和分子分析的集成滴液致动器

    公开(公告)号：US20150323496A1

    公开(公告)日：2015-11-12

    申请号：US14795304

    申请日：2015-07-09

    Applicant: Advanced Liquid Logic, Inc. ,  Duke University

    Inventor： Michael G. Pollack ,  Vijay Srinivasan ,  Zhishan Hua ,  Hon Lung Chu ,  Michael Hauser ,  Allen Eckhardt

    IPC: G01N27/447 ,  B01L3/00

    CPC classification number: G01N27/44743 ,  B01L3/502715 ,  B01L3/502792 ,  B01L7/525 ,  B01L2200/025 ,  B01L2200/027 ,  B01L2300/088 ,  B01L2300/0887 ,  B01L2300/089 ,  B01L2300/161 ,  B01L2400/0406 ,  B01L2400/043 ,  B01L2400/0457 ,  B01L2400/046 ,  G01N27/44791

    Abstract: The invention is directed to a droplet actuator device and methods for integrating gel electrophoresis analysis with pre or post-analytical sample handling as well as other molecular analysis processes. Using digital microfluidics technology, the droplet actuator device and methods of the invention provide the ability to perform gel electrophoresis and liquid handling operations on a single integrated device. The integrated liquid handling operations may be used to prepare and deliver samples to the electrophoresis gel, capture and subsequently process products of the electrophoresis gel or perform additional assays on the same sample materials which are analyzed by gel electrophoresis. In one embodiment, one or more molecular assays, such as nucleic acid (e.g., DNA) quantification by real-time PCR, and one or more sample processing operations such as sample dilution is performed on a droplet actuator integrated with an electrophoresis gel. In one embodiment, an electrophoresis gel may be integrated on the top substrate of the droplet actuator.

    Abstract translation: 本发明涉及液滴致动器装置以及用于将凝胶电泳分析与分析前样品或分析后处理以及其它分子分析方法相集成的方法。 使用数字微流体技术，液滴致动器装置和本发明的方法提供了在单个集成装置上执行凝胶电泳和液体处理操作的能力。 集成的液体处理操作可以用于制备并将样品递送到电泳凝胶，捕获并随后处理电泳凝胶的产物，或在通过凝胶电泳分析的相同样品材料上进行附加测定。 在一个实施方案中，在与电泳凝胶结合的液滴致动器上进行一个或多个分子测定，例如通过实时PCR的核酸（例如DNA）定量和一个或多个样品处理操作，例如样品稀释。 在一个实施方案中，电泳凝胶可以集成在液滴致动器的顶部基底上。

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