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公开(公告)号：US20230128722A1
公开(公告)日：2023-04-27
申请号：US18063874
申请日：2022-12-09
IPC分类号： G01N33/543 , B01L3/00 , B03C1/02 , B03C1/28 , B03C1/30 , B03C5/00 , C12N15/10 , G01N33/561 , B01F31/65 , B01F33/302 , B01F33/3031
摘要： Methods are provided for separating magnetically responsive beads from a droplet in a droplet actuator. Droplet operations electrodes and a magnet are arranged in a droplet actuator to manipulate a bead-containing droplet and position it relative to a magnetic field region that attracts the magnetically responsive beads. The droplet operations electrodes are operated to control the droplet shape and transport it away from the magnetic field region to form a concentration of beads in the droplet. The continued transport of the droplet away from the magnetic field causes the concentration of beads to break away from the droplet to yield a small, concentrated bead-containing droplet immobilized by the magnet.
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公开(公告)号：US20230046866A1
公开(公告)日：2023-02-16
申请号：US17962989
申请日：2022-10-10
发明人： Uichong B. Yi , Vijay Srinivasan
摘要： Methods of improving accuracy of droplet metering using at least one on-actuator reservoir as the fluid input. In some embodiments, the on-actuator reservoir that is used for metering droplets includes a loading port, a liquid storage zone, a droplet metering zone, and a droplet dispensing zone. The on-actuator reservoirs are designed to prevent liquid flow-back into the loading port and to prevent liquid from flooding into the droplet operations gap in the dispensing zone.
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公开(公告)号：US20220155251A1
公开(公告)日：2022-05-19
申请号：US17649842
申请日：2022-02-03
IPC分类号： G01N27/26 , B01L3/00 , B01L7/00 , G01N35/00 , B01F33/302 , B01F33/3031 , C12Q1/686 , C12Q1/6869 , G01N27/447 , G01N27/327 , G01N27/416
摘要： The present invention relates to droplet-based surface modification and washing. According to one embodiment, a method of splitting a droplet is provided, the method including providing a droplet microactuator including a droplet including one or more beads and immobilizing at least one of the one or more beads. The method further includes conducting one or more droplet operations to divide the droplet to yield a set of droplets including a droplet including the one or more immobilized beads and a droplet substantially lacking the one or more immobilized beads.
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公开(公告)号：US10799892B2
公开(公告)日：2020-10-13
申请号：US16176329
申请日：2018-10-31
发明人： Uichong B. Yi , Vijay Srinivasan
摘要： The present invention is directed to methods of improving accuracy of droplet metering using at least one on-actuator reservoir as the fluid input. In some embodiments, the on-actuator reservoir that is used for metering droplets includes a loading port, a liquid storage zone, a droplet metering zone, and a droplet dispensing zone. The on-actuator reservoirs are designed to prevent liquid flow-back into the loading port and to prevent liquid from flooding into the droplet operations gap in the dispensing zone.
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公开(公告)号：US20190086399A1
公开(公告)日：2019-03-21
申请号：US16191270
申请日：2018-11-14
发明人： Vamsee K. Pamula , Ramakrishna Sista , Vijay Srinivasan , Michael G. Pollack , Allen E. Eckhardt
IPC分类号： G01N33/543 , B01F13/08 , G01N1/38
CPC分类号： G01N33/54326 , B01F11/0071 , B01F13/0071 , B01F13/0076 , B01F13/0809 , B01L3/50273 , B01L3/502761 , B01L3/502792 , B01L7/52 , B01L7/525 , B01L2200/027 , B01L2200/0647 , B01L2200/0673 , B01L2300/06 , B01L2300/0654 , B01L2300/0816 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/089 , B01L2300/1827 , B01L2400/0406 , B01L2400/0415 , B01L2400/0421 , B01L2400/0424 , B01L2400/0427 , B01L2400/043 , B01L2400/0436 , B01L2400/0442 , G01N1/38 , G01N2001/386 , G01N2035/1046 , Y10T436/11 , Y10T436/25 , Y10T436/25625 , Y10T436/2575
摘要： Provided herein are methods of splitting droplets containing magnetically responsive beads in a droplet actuator. A droplet actuator having a plurality of droplet operations electrodes configured to transport the droplet, and a magnetic field present at the droplet operations electrodes, is provided. The magnetically responsive beads in the droplet are immobilized using the magnetic field and the plurality of droplet operations electrodes are used to split the droplet into first and second droplets while the magnetically responsive beads remain substantially immobilized.
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公开(公告)号：US10124351B2
公开(公告)日：2018-11-13
申请号：US14911191
申请日：2014-08-13
发明人： Uichong B. Yi , Vijay Srinivasan
摘要： The present invention is directed to methods of improving accuracy of droplet metering using at least one on-actuator reservoir as the fluid input. In some embodiments, the on-actuator reservoir that is used for metering droplets includes a loading port, a liquid storage zone, a droplet metering zone, and a droplet dispensing zone. The on-actuator reservoirs are designed to prevent liquid flow-back into the loading port and to prevent liquid from flooding into the droplet operations gap in the dispensing zone.
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公开(公告)号：US20170159105A1
公开(公告)日：2017-06-08
申请号：US15436975
申请日：2017-02-20
发明人： Allen E. Eckhardt , Carrie Graham , Ramakrishna Sista , Vamsee K. Pamula , Theodore Winger , Tong Wang , Yalin Xiong , Ning Wu , Sanjay Saha , Gajendrasinh Raolji , Raveendra Dayam
CPC分类号： C12Q1/40 , B01L3/502784 , B01L2300/0654 , B01L2300/0816 , B01L2300/18 , B01L2400/0427 , B01L2400/043 , C07D311/16 , C07D311/18 , C07D311/20 , C07D405/12 , C07D413/12 , C07H15/203 , C07H17/075 , C12Q1/25 , C12Q1/34 , C12Q1/44 , C12Q1/54 , C12Y302/01023 , G01N21/6452 , G01N33/5438 , G01N2333/916 , G01N2333/926 , G01N2333/938 , G01N2800/04
摘要： The invention is directed to droplet actuator devices and assay methods. The invention includes assay methods of conducting an assay comprising combining a sample with an umbelliferyl derivative, wherein the sample potentially comprises an enzyme capable of cleaving the umbelliferyl derivative and where the umbelliferyl derivative comprises an umbelliferyl core modified with one or more modifying moieties.
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8.发明申请公开(公告)号：US20170003282A1
公开(公告)日：2017-01-05
申请号：US15266693
申请日：2016-09-15
IPC分类号： G01N33/543 , B01F13/00 , B01F13/08 , B01L3/00
CPC分类号： G01N33/54326 , B01F11/0071 , B01F13/0071 , B01F13/0076 , B01F13/0809 , B01L3/50273 , B01L3/502761 , B01L3/502792 , B01L7/52 , B01L7/525 , B01L2200/027 , B01L2200/0647 , B01L2200/0673 , B01L2300/06 , B01L2300/0654 , B01L2300/0816 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/089 , B01L2300/1827 , B01L2400/0406 , B01L2400/0415 , B01L2400/0421 , B01L2400/0424 , B01L2400/0427 , B01L2400/043 , B01L2400/0436 , B01L2400/0442 , G01N1/38 , G01N2001/386 , G01N2035/1046 , Y10T436/11 , Y10T436/25 , Y10T436/25625 , Y10T436/2575
摘要： The invention provides a method of circulating magnetically responsive beads within a droplet in a droplet actuator. The invention also provides methods for splitting droplets. The invention, in one embodiment, makes use of a droplet actuator with top and bottom substrates, a plurality of magnetic fields respectively present proximate the top and bottom substrates, wherein at least one of the magnet fields is selectively alterable, and a plurality of droplet operations electrodes positioned along at least one of the top and bottom surfaces. A droplet is positioned between the top and bottom surfaces and at least one of the magnetic fields is selectively altered.
摘要翻译： 本发明提供了一种在液滴致动器中的液滴内循环磁响应珠的方法。 本发明还提供了分裂液滴的方法。 在一个实施例中，本发明利用具有顶部和底部基底的液滴致动器，分别存在于顶部和底部基底附近的多个磁场，其中至少一个磁场可选择性地改变，并且多个液滴 沿着顶表面和底表面中的至少一个定位的操作电极。 液滴位于顶表面和底表面之间，并且至少一个磁场被选择性地改变。
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公开(公告)号：US20160370317A9
公开(公告)日：2016-12-22
申请号：US14498418
申请日：2014-09-26
IPC分类号： G01N27/447
CPC分类号： G01N27/44756 , B01F13/0071 , B01F13/0076 , B01L3/502707 , B01L3/502792 , B01L2300/0816 , B01L2300/0819 , B01L2400/0427 , B01L2400/0688 , B01L2400/086 , B29C59/02 , B41J2/1601 , B81B7/0061 , B81B2201/058 , B81B2201/13 , F04B17/00 , F04B19/006
摘要： The invention provides droplet actuators with droplet operations surfaces for manipulating droplets, e.g., by conducting droplet operations. The droplet operations surfaces are typically exposed to a droplet operations gap. One or more regions of a droplet operation surface may include patterned topographic features. The invention also provides a droplet actuator in which one or both gap-facing droplet operations surfaces is formed using a removable film. The removable film may, in various embodiments, also include other components ordinarily associated with the droplet actuator substrate, such as the dielectric layer and the electrodes. Further, the invention provides droplet actuator devices and methods for coupling and/or sealing substrates of a droplet actuator, such as techniques for self-aligning assembly of droplet actuator substrates. The invention provides droplet actuators and methods of disassembling the droplet actuator in order to provide access for cleaning and/or recycling of droplet actuator surfaces.
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公开(公告)号：US09494498B2
公开(公告)日：2016-11-15
申请号：US14978935
申请日：2015-12-22
IPC分类号： B01L3/00 , B01L3/02 , G01N1/10 , G01N15/06 , G01N33/00 , G01N33/48 , G01N1/38 , B01F11/00 , B01F13/00 , G01N33/543 , B01L7/00 , G01N35/10
CPC分类号： G01N33/54326 , B01F11/0071 , B01F13/0071 , B01F13/0076 , B01F13/0809 , B01L3/50273 , B01L3/502761 , B01L3/502792 , B01L7/52 , B01L7/525 , B01L2200/027 , B01L2200/0647 , B01L2200/0673 , B01L2300/06 , B01L2300/0654 , B01L2300/0816 , B01L2300/0861 , B01L2300/0864 , B01L2300/0867 , B01L2300/089 , B01L2300/1827 , B01L2400/0406 , B01L2400/0415 , B01L2400/0421 , B01L2400/0424 , B01L2400/0427 , B01L2400/043 , B01L2400/0436 , B01L2400/0442 , G01N1/38 , G01N2001/386 , G01N2035/1046 , Y10T436/11 , Y10T436/25 , Y10T436/25625 , Y10T436/2575
摘要： The invention provides a method of circulating magnetically responsive beads within a droplet in a droplet actuator. The invention also provides methods for splitting droplets. The invention, in one embodiment, makes use of a droplet actuator with top and bottom substrates, a plurality of magnetic fields respectively present proximate the top and bottom substrates, wherein at least one of the magnet fields is selectively alterable, and a plurality of droplet operations electrodes positioned along at least one of the top and bottom surfaces. A droplet is positioned between the top and bottom surfaces and at least one of the magnetic fields is selectively altered.
摘要翻译： 本发明提供了一种在液滴致动器中的液滴内循环磁响应珠的方法。 本发明还提供了分裂液滴的方法。 在一个实施例中，本发明利用具有顶部和底部基底的液滴致动器，分别存在于顶部和底部基底附近的多个磁场，其中至少一个磁场可选择性地改变，并且多个液滴 沿着顶表面和底表面中的至少一个定位的操作电极。 液滴位于顶表面和底表面之间，并且至少一个磁场被选择性地改变。
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