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    • 1. 发明申请
    • FLUIDIC DROPLET COALESCENCE
    • 流体滴灌技术
    • WO2007089541A2
    • 2007-08-09
    • PCT/US2007/002063
    • 2007-01-24
    • PRESIDENT AND FELLOWS OF HARVARD COLLEGEAHN, KeunhoCHONG, HenryAGRESTI, JeremyWEITZ, David, A.LINK, Darren, Roy
    • AHN, KeunhoCHONG, HenryAGRESTI, JeremyWEITZ, David, A.LINK, Darren, Roy
    • B01F13/00B01J19/00
    • B01F13/0071B01F13/0076B01J19/0093B01J2219/00272B01J2219/00828B01J2219/00833B01J2219/00835B01J2219/00853B01J2219/00889B01J2219/0093B01L3/5027B01L3/502784B01L2200/0673B01L2300/0867B01L2400/0415B01L2400/0487G01N15/1404G01N2015/1006
    • 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.
    • 本发明一般涉及用于控制流体物种的系统和方法,尤其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。 一方面,本发明涉及用于使通道内的两个或多个流体液滴聚结的系统和方法。 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其中的物质的实质上数量相同的实体组成(即,分子,细胞,颗粒等)。 在某些情况下,流体液滴可以聚结开始反应和/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,或者第一液滴可以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。
    • 3. 发明申请
    • FLUIDIC DROPLET COALESCENCE
    • 流体滴灌技术
    • WO2007089541A3
    • 2007-11-15
    • PCT/US2007002063
    • 2007-01-24
    • HARVARD COLLEGEAHN KEUNHOCHONG HENRYAGRESTI JEREMYWEITZ DAVID ALINK DARREN ROY
    • AHN KEUNHOCHONG HENRYAGRESTI JEREMYWEITZ DAVID ALINK DARREN ROY
    • B01F13/00B01J19/00
    • B01F13/0071B01F13/0076B01J19/0093B01J2219/00272B01J2219/00828B01J2219/00833B01J2219/00835B01J2219/00853B01J2219/00889B01J2219/0093B01L3/5027B01L3/502784B01L2200/0673B01L2300/0867B01L2400/0415B01L2400/0487
    • The present invention generally relates to methods for the control of fluidic species and, in particular, to the coalescence of fluidic droplets. In certain instances, the methods are microf luidic. In one aspect, the invention relates to 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 (21) may be caused to move at a first velocity, and a second fluidic droplet (22) 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.
    • 本发明一般涉及用于控制流体物种的方法,尤其涉及流体液滴聚结的方法。 在某些情况下,该方法是微流感。 一方面,本发明涉及使通道内的两个或多个流体液滴聚结的方法。 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(21)以第一速度移动,并且可以使第二流体液滴(22)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,反应可以开始。