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    • 8. 发明授权
    • Polymeric salt bridges for conducting electric current in microfluidic devices
    • 用于在微流体装置中传导电流的聚合盐桥
    • US07618524B1
    • 2009-11-17
    • US10916310
    • 2004-08-10
    • Timothy J. ShepoddMark S. TichenorAlexander Artau
    • Timothy J. ShepoddMark S. TichenorAlexander Artau
    • G01N27/453
    • F04B19/006B01L3/502707B01L3/502738B01L2200/143B01L2300/0816B01L2400/0418B01L2400/0421
    • A “cast-in-place” monolithic microporous polymer salt bridge for conducting electrical current in microfluidic devices, and methods for manufacture thereof is disclosed. Polymeric salt bridges are formed in place in capillaries or microchannels. Formulations are prepared with monomer, suitable cross-linkers, solvent, and a thermal or radiation responsive initiator. The formulation is placed in a desired location and then suitable radiation such as UV light is used to polymerize the salt bridge within a desired structural location. Embodiments are provided wherein the polymeric salt bridges have sufficient porosity to allow ionic migration without bulk flow of solvents therethrough. The salt bridges form barriers that seal against fluid pressures in excess of 5000 pounds per square inch. The salt bridges can be formulated for carriage of suitable amperage at a desired voltage, and thus microfluidic devices using such salt bridges can be specifically constructed to meet selected analytical requirements.
    • 公开了一种用于在微流体装置中传导电流的“现浇”整体式微孔聚合物盐桥及其制造方法。 在毛细管或微通道中形成聚合盐桥。 制剂用单体,合适的交联剂,溶剂和热或辐射响应性引发剂制备。 将配方放置在所需的位置,然后使用合适的辐射(例如UV光)使盐桥在期望的结构位置聚合。 提供了实施例,其中聚合物盐桥具有足够的孔隙度以允许离子迁移,而不会使溶剂流过其中。 盐桥形成了密封超过5000磅/平方英寸的流体压力的障碍物。 盐桥可以配制成以所需的电压运送合适的电流,因此使用这种盐桥的微流体装置可以被特别地构造以满足所选择的分析要求。