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    • 7. 发明申请
    • DESIGN OF AN IC-PROCESSED POLYMER NANO-LIQUID CHROMATOGRAPHY SYSTEM ON-A-CHIP AND METHOD OF MAKING IT
    • IC加工聚合物纳米液相色谱系统的设计及其制备方法
    • WO2005018770A2
    • 2005-03-03
    • PCT/US2004026657
    • 2004-08-17
    • CALIFORNIA INST OF TECHNHOPE CITYTAI YU-CHONGHE QINGXIE JUNPANG CHANGLINLEE TERRY D
    • TAI YU-CHONGHE QINGXIE JUNPANG CHANGLINLEE TERRY D
    • G01N30/60G01N30/64B01D
    • H05K3/284G01N30/6047G01N30/6095G01N2030/645G03F1/80G01N2030/625
    • Embodiments in accordance with the present invention relate to packed-column nano-liquid chromatography (nano-LC) systems integrated on-chip, and methods for producing and using same. The microfabricated chip includes a column, frits/filters, an injector, and a detector, fabricated in a process compatible with those conventionally utilized to form integrated circuits. The column can be packed with supports for various different stationary phases to allow performance of different forms of nano-LC, including but not limited to reversed-phase, normal-phase, adsorption, size-exclusion, affinity, and ion chromatography. A cross-channel injector injects a nanolitre/picolitre-volume sample plug at the column inlet. An electrochemical/conductivity sensor integrated at the column outlet measures separation signals. A self-aligned channel-strengthening technique increases pressure rating of the microfluidic system, allowing it to withstand the high pressure normally used in high performance liquid chromatography (HPLC). On-chip sample injection, separation, and detection of mixture of anions in water is successfully demonstrated using ion-exchange nano-LC.
    • 根据本发明的实施方案涉及集成在片上的填充柱纳米液相色谱(nano-LC)系统及其制造和使用方法。 微制造的芯片包括柱状物,玻璃料/过滤器,注射器和检测器,以与传统上用于形成集成电路的那些兼容的方法制造。 该柱可以填充有用于各种不同固定相的载体,以允许不同形式的纳米LC的性能,包括但不限于反相,正相,吸附,尺寸排阻,亲和力和离子色谱。 交叉通道注射器在柱入口处注入纳升/皮升体积的样品塞。 集成在色谱柱出口处的电化学/电导率传感器测量分离信号。 自对准的通道加强技术提高了微流体系统的压力等级,使其能够承受通常用于高效液相色谱(HPLC)的高压。 使用离子交换纳米LC成功地证明了在水中阴离子的混合物的片上样品注入,分离和检测。