METHOD AND APPARATUS FOR IMPROVED PUMPING MEDIUM FOR ELECTRO-OSMOTIC PUMPS
    2.
    发明申请
    METHOD AND APPARATUS FOR IMPROVED PUMPING MEDIUM FOR ELECTRO-OSMOTIC PUMPS 审中-公开
    用于电动泵的改进泵送介质的方法和装置

    公开(公告)号:US20090061601A1

    公开(公告)日:2009-03-05

    申请号:US12266771

    申请日:2008-11-07

    IPC分类号: H01L21/205

    CPC分类号: F04B37/02

    摘要: Various embodiments of the present invention comprise systems and methods of fabricating porous silicon. One application of such porous silicon is in the fabrication of electro-osmotic pumps and electro-osmotic pump substrates. The method can comprise operations performed on a silicon wafer. A liner material can be deposited on the silicon wafer, and a photoresist layer can be deposited on the liner material. The photoresist layer can be adapted to define a predetermined pattern on the silicon wafer. Then, porous silicon can be formed on the silicon wafer according to the predefined pattern. As a result, solid silicon can support porous silicon regions of the silicon wafer, providing a support structure for the pumping medium. Other embodiments, aspects, and features are also claimed and described.

    摘要翻译: 本发明的各种实施例包括制造多孔硅的系统和方法。 这种多孔硅的一个应用是制造电渗透泵和电渗透泵衬底。 该方法可以包括在硅晶片上执行的操作。 可以在硅晶片上沉积衬垫材料,并且可以在衬垫材料上沉积光致抗蚀剂层。 光致抗蚀剂层可以适于在硅晶片上限定预定图案。 然后,可以根据预定图案在硅晶片上形成多孔硅。 结果,固体硅可以支撑硅晶片的多孔硅区域,为泵送介质提供支撑结构。 还要求和描述其他实施例,方面和特征。

    Method and apparatus for improved pumping medium for electro-osmotic pumps
    3.
    发明授权
    Method and apparatus for improved pumping medium for electro-osmotic pumps 有权
    用于改进电渗泵的泵送介质的方法和装置

    公开(公告)号:US07458783B1

    公开(公告)日:2008-12-02

    申请号:US10883469

    申请日:2004-06-30

    IPC分类号: F04B37/02 C02F1/48

    CPC分类号: F04B37/02

    摘要: A pumping medium for an electro-osmotic pump made of porous silicon. The porous silicon may result in a lower required pumping voltage and a smaller form factor for an equivalent flow rate and pressure generation as compared to conventional glass frits. The porous silicon may also provide a better thermodynamic efficiency over conventional glass frits for use in electro-osmotic pumps. The increased efficiency of the porous silicon may provide an low-power, high flow rate, high pressure, small form factor, vibration-free pump for cooling microelectronic devices, such as integrated circuit chips.

    摘要翻译: 用于由多孔硅制成的电渗泵的泵送介质。 与常规玻璃料相比,多孔硅可能导致较低的所需泵送电压和较小的形状因子,用于等效流速和压力产生。 与用于电渗泵的常规玻璃料相比,多孔硅还可提供更好的热力学效率。 多孔硅的提高的效率可以提供低功率,高流量,高压,小形状因数,用于冷却诸如集成电路芯片的微电子器件的无振动泵。

    Orientation independent electroosmotic pump
    4.
    发明申请
    Orientation independent electroosmotic pump 有权
    定向独立电渗泵

    公开(公告)号:US20060254913A1

    公开(公告)日:2006-11-16

    申请号:US11125720

    申请日:2005-05-10

    IPC分类号: C07K1/26 G01N27/00

    摘要: According to some embodiments, a method, system, and apparatus for providing an orientation independent electroosmotic pump. In some embodiments, the method includes an anode and a cathode at different electrical potentials, the anode and cathode are each sealed in an ion-exchange membrane and at least partially immersed in an electrolyte contained in a reservoir of an electroosmotic pump, collecting gases generated by electrolytic decomposition of the electrolyte within a space defined by the ion-exchange membranes that seal the anode and cathode, recombining the collected gases to produce a liquid using a catalyst, the catalyst being located outside of the reservoir, and introducing the produced liquid into the fluid reservoir through an osmotic membrane.

    摘要翻译: 根据一些实施例,一种用于提供取向独立电渗泵的方法,系统和装置。 在一些实施例中,该方法包括在不同电势下的阳极和阴极,阳极和阴极各自密封在离子交换膜中并且至少部分地浸入包含在电渗泵的储存器中的电解质中,收集产生的气体 通过在由密封阳极和阴极的离子交换膜限定的空间内电解分解电解质,使用催化剂将收集的气体重新组合以产生液体,催化剂位于储存器外部,并将所产生的液体引入 流体储存器通过渗透膜。

    Electroosmotic micropumps with applications to fluid dispensing and field sampling
    5.
    发明申请
    Electroosmotic micropumps with applications to fluid dispensing and field sampling 失效
    电渗雾微乳液,适用于流体分配和现场取样

    公开(公告)号:US20050034842A1

    公开(公告)日:2005-02-17

    申请号:US10638732

    申请日:2003-08-11

    摘要: Apparatus and methods according to the present invention preferably utilize electroosmotic pumps in fluid handling and field sampling applications. The electroosmotic pumps used in these applications are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as well as the associated reduction in reliability. Having multiple small flow channels in parallel provides both a high flow rate and high pressure in liquid handling. These electroosmotic pumps are fabricated with materials and structures that improve performance, efficiency, and reduce weight and manufacturing cost relative to presently available micropumps. These electroosmotic pumps also allow for recapture of evolved gases and deposited materials, which may provide for long-term closed-loop operation. Apparatus and methods according to the present invention also allow active regulation of the fluid handling and field sampling devices through electrical control of the flow through the pump. Electroosmotic pumping enables precise dispensing of samples to form genetic, proteomic, or small molecule arrays. A fluid sensor which can be optical, capacitive or other type of electrical sensor is integrated with the electroosmotic pump for measuring liquid levels in liquid drawing and dispensing operations.

    摘要翻译: 根据本发明的设备和方法优选地在流体处理和现场取样应用中使用电渗泵。 在这些应用中使用的电渗泵能够在不移动机械部件的情况下产生高压力和流量,并且相关产生不可接受的电气和噪音噪声以及相关联的可靠性降低。 具有多个小流量通道并联提供液体处理中的高流速和高压力。 这些电渗泵由材料和结构制成,相对于目前可获得的微量泵,其材料和结构提高了性能,效率并降低了重量和制造成本。 这些电渗泵还允许重新捕获可能提供长期闭环操作的放出气体和沉积材料。 根据本发明的装置和方法还允许通过对通过泵的流的电控制来主动调节流体处理和现场取样装置。 电渗抽吸可以精确分配样品以形成遗传,蛋白质组或小分子阵列。 可以将光学,电容或其它类型的电传感器的流体传感器与电渗泵一体化,以测量液体抽取和分配操作中的液位。

    Orientation independent electroosmotic pump
    6.
    发明授权
    Orientation independent electroosmotic pump 有权
    定向独立电渗泵

    公开(公告)号:US07645368B2

    公开(公告)日:2010-01-12

    申请号:US11125720

    申请日:2005-05-10

    IPC分类号: F04F1/00

    摘要: According to some embodiments, a method, system, and apparatus for providing an orientation independent electroosmotic pump. In some embodiments, the method includes an anode and a cathode at different electrical potentials, the anode and cathode are each sealed in an ion-exchange membrane and at least partially immersed in an electrolyte contained in a reservoir of an electroosmotic pump, collecting gases generated by electrolytic decomposition of the electrolyte within a space defined by the ion-exchange membranes that seal the anode and cathode, recombining the collected gases to produce a liquid using a catalyst, the catalyst being located outside of the reservoir, and introducing the produced liquid into the fluid reservoir through an osmotic membrane.

    摘要翻译: 根据一些实施例,一种用于提供取向独立电渗泵的方法,系统和装置。 在一些实施例中,该方法包括在不同电势下的阳极和阴极,阳极和阴极各自密封在离子交换膜中并且至少部分地浸入包含在电渗泵的储存器中的电解质中,收集产生的气体 通过在由密封阳极和阴极的离子交换膜限定的空间内电解分解电解质,使用催化剂将收集的气体重新组合以产生液体,催化剂位于储存器外部,并将所产生的液体引入 流体储存器通过渗透膜。

    LIQUID AND GEL ELECTRODES FOR TRANSVERSE FREE FLOW ELECTROPHORESIS
    7.
    发明申请
    LIQUID AND GEL ELECTRODES FOR TRANSVERSE FREE FLOW ELECTROPHORESIS 有权
    液体和凝胶电极用于横向自由流动电泳

    公开(公告)号:US20120228141A1

    公开(公告)日:2012-09-13

    申请号:US13413161

    申请日:2012-03-06

    IPC分类号: C25B9/00 B01D43/00

    摘要: The present invention provides a mechanism for separating or isolating charged particles under the influence of an electric field without metal electrodes being in direct contact with the sample solution. The metal electrodes normally in contact with the sample are replaced with high conductivity fluid electrodes situated parallel and adjacent to the sample. When the fluid electrodes transmit the electric field across the sample, particles within the sample migrate according to their electrophoretic mobility.

    摘要翻译: 本发明提供了一种用于在没有金属电极与样品溶液直接接触的电场的影响下分离或分离带电粒子的机理。 通常与样品接触的金属电极被替换为与样品平行且相邻的高导电性流体电极。 当流体电极跨越样品传播电场时,样品内的颗粒根据其电泳迁移率而迁移。

    Micro-fabricated electrokinetic pump
    9.
    发明授权
    Micro-fabricated electrokinetic pump 有权
    微电动动力泵

    公开(公告)号:US07449122B2

    公开(公告)日:2008-11-11

    申请号:US10968376

    申请日:2004-10-18

    IPC分类号: F04B1/00

    CPC分类号: F04B17/00 F04B19/006

    摘要: An electrokinetic pump for pumping a liquid includes a pumping body having a plurality of narrow, short and straight pore apertures for channeling the liquid through the body. A pair of electrodes for applying a voltage differential are formed on opposing surfaces of the pumping body at opposite ends of the pore apertures. The pumping body is formed on a support structure to maintain a mechanical integrity of the pumping body. The pump can be fabricated using conventional semiconductor processing steps. The pores are preferably formed using plasma etching. The structure is oxidized to insulate the structure and also narrow the pores. A support structure is formed by etching a substrate and removing an interface oxide layer. Electrodes are formed to apply a voltage potential across the pumping body. Another method of fabricating an electrokinetic pump includes providing etch stop alignment marks so that the etch step self-terminates.

    摘要翻译: 用于泵送液体的电动泵包括具有多个窄的,短的和直的孔隙的泵送体,用于将液体引导通过身体。 用于施加电压差的一对电极形成在孔隙的相对端处的泵体的相对表面上。 泵体形成在支撑结构上以保持泵体的机械完整性。 泵可以使用常规的半导体处理步骤制造。 优选使用等离子体蚀刻形成孔。 该结构被氧化以使结构绝缘并且还使孔变窄。 通过蚀刻衬底并除去界面氧化物层形成支撑结构。 形成电极以在泵体上施加电压电位。 制造电动泵的另一种方法包括提供蚀刻停止对准标记,使得蚀刻步骤自我终止。

    Heat and water management device and method in fuel cells
    10.
    发明申请
    Heat and water management device and method in fuel cells 有权
    燃料电池中的热水管理装置和方法

    公开(公告)号:US20080032169A1

    公开(公告)日:2008-02-07

    申请号:US11807228

    申请日:2007-05-24

    IPC分类号: H01M8/00 B29C45/00

    摘要: A method and device for fuel cell heat and water management is provided. A thermally and electrically conductive hydrophilic heat and mass transport element is provided to the fuel cell spanning from inside to outside the cell. The transport element is deposited between current collector and gas diffusion layers, where heat is transported along the transport element from an interior portion of the element inside the cell to an exterior portion of the element outside the cell. Liquid water is transported along the element into or out of the cell, and heat is removed from the exterior portion by any combination of radiation, free convection and forced convection, and where the liquid water is removed from the exterior portion by any combination of convection driven evaporation and advection. The water is added to the cell from the exterior to the interior by any combination of advection and capillary wicking.

    摘要翻译: 提供了一种用于燃料电池热水管理的方法和装置。 向导电池内部和外部的燃料电池提供导热和导电的亲水热传质元件。 传输元件沉积在集流体和气体扩散层之间,其中热量沿着传输元件从电池内的元件的内部传送到电池单元外部的外部部分。 液体水沿着元件进入或离开电池,并且通过辐射,自由对流和强制对流的任何组合从外部部分去除热量,并且其中液体水通过对流的任何组合从外部部分去除 驱动蒸发和平流。 通过对流和毛细管芯吸的任何组合将水从外部添加到细胞中。