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10 条记录 (耗时 0.021 秒)

    Mobile monolithic polymer elements for flow control in microfluidic devices
    5.
    发明申请
    Mobile monolithic polymer elements for flow control in microfluidic devices 审中-公开
    用于微流体装置中流动控制的移动单片聚合物元件

    公开(公告)号：US20050004250A1

    公开(公告)日：2005-01-06

    申请号：US10891528

    申请日：2004-07-14

    申请人： Ernest Hasselbrink ,  Jason Rehm ,  Timothy Shepodd

    发明人： Ernest Hasselbrink ,  Jason Rehm ,  Timothy Shepodd

    IPC分类号： F15C5/00 ,  F16K99/00 ,  G01F3/06 ,  G01F3/24 ,  B23K26/00 ,  B29C35/08 ,  C08J3/28 ,  H01S3/00

    CPC分类号： F16K99/0001 ,  F15C5/00 ,  F16K99/0005 ,  F16K99/0011 ,  F16K99/0017 ,  F16K99/003 ,  F16K99/0034 ,  F16K99/004 ,  F16K99/0044 ,  F16K99/0057 ,  F16K99/0059 ,  F16K2099/0074 ,  G01F3/06 ,  G01F3/24

    摘要： A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by either fluid or gas pressure against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

    摘要翻译： 用于微流体装置中流体流动控制的现浇和光刻形移动式整体式聚合物元件及其制造方法。 提供控制流体或离子电流的微流量控制装置或微型阀可以包括设置在微通道内的现浇可移动整体式聚合物元件，并通过流体或气体压力驱动抵靠保持或 密封面。 通过将光刻方法应用于以聚合物不会结合到微通道壁的方式配制的单体混合物来制备聚合物元件。 聚合物元件可以密封大于5000psi的压力，并且具有大约毫秒级的响应时间。 通过使用高能辐射，可以解聚聚合物元件的选定区域以形成不能通过常规平版印刷图案产生的形状，并且不可能加工。

    Microfluidic weaklink device
    6.
    发明申请
    Microfluidic weaklink device 审中-公开
    微流控弱连接装置

    公开(公告)号：US20060137985A1

    公开(公告)日：2006-06-29

    申请号：US11021281

    申请日：2004-12-23

    申请人： Timothy Shepodd ,  Matthew Duncan

    发明人： Timothy Shepodd ,  Matthew Duncan

    IPC分类号： G01N27/447

    CPC分类号： F04B19/006

    摘要： The present invention relates to an electrokinetic (EK) pump capable of creating high pressures electroosmotically, and capable of retaining high pressures. Both pressure creation and retention are accomplished without the need for moving parts. The EK pump uses a polymerizable fluid that creates the pressure-retaining seal within the EK pump when polymerization is initiated, typically by exposure to uv radiation. Weaklink devices are advantageously constructed including such a pressure-retaining EK pump since, among other advantages, the response of the weaklink device relies on predictable and reliable chemical polymerization reactions.

    摘要翻译： 本发明涉及能够电动地产生高压并能够保持高压的电动（EK）泵。 压力创造和保持都是在不需要移动部件的情况下完成的。 EK泵使用可聚合流体，当聚合开始时，通常通过暴露于紫外辐射，在EK泵内产生保压密封。 弱连接装置有利地被构造成包括这种保压EK泵，因为除其他优点之外，弱连接装置的响应依赖于可预测和可靠的化学聚合反应。

    Absorption media for irreversibly gettering thionyl chloride
    8.
    发明授权
    Absorption media for irreversibly gettering thionyl chloride 失效
    用于不可逆吸收亚硫酰氯的吸收介质

    公开(公告)号：US06471886B1

    公开(公告)日：2002-10-29

    申请号：US09698504

    申请日：2000-10-27

    申请人： George Buffleben ,  Steven H. Goods ,  Timothy Shepodd ,  David R. Wheeler ,  LeRoy Whinnery, Jr.

    发明人： George Buffleben ,  Steven H. Goods ,  Timothy Shepodd ,  David R. Wheeler ,  LeRoy Whinnery, Jr.

    IPC分类号： B01J2020

    CPC分类号： B01J20/2805 ,  B01J20/0244 ,  B01J20/06 ,  B01J20/20 ,  B01J20/28 ,  B01J20/28004 ,  B01J2220/42

    摘要： Thionyl chloride is a hazardous and reactive chemical used as the liquid cathode in commercial primary batteries. Contrary to previous thinking, ASZM-TEDA® carbon (Calgon Corporation) reversibly absorbs thionyl chloride. Thus, several candidate materials were examined as irreversible getters for thionyl chloride. The capacity, rate and effect of temperature were also explored. A wide variety of likely materials were investigated through screening experiments focusing on the degree of heat generated by the reaction as well as the material absorption capacity and irreversibility, in order to help narrow the group of possible getter choices. More thorough, quantitative measurements were performed on promising materials. The best performing getter was a mixture of ZnO and ASZM-TEDA® carbon. In this example, the ZnO reacts with thionyl chloride to form ZnCl2 and SO2. The SO2 is then irreversibly gettered by ASZM-TEDA® carbon. This combination of ZnO and carbon has a high capacity, is irreversible and functions effectively above −20° C.

    摘要翻译： 亚硫酰氯是用作商业一次电池中的液体阴极的危险和反应性化学品。 与以前的想法相反，ASZM-TEDA碳（Calgon Corporation）可逆地吸收亚硫酰氯。 因此，将几种候选材料作为亚硫酰氯的不可逆吸收剂进行检查。 还探讨了温度的容量，速率和影响。 通过关注反应产生的热度以及材料吸收能力和不可逆性的筛选实验来研究各种可能的材料，以帮助缩小一组可能的吸气剂选择。 对有希望的材料进行更全面的定量测量。 性能最好的吸气剂是ZnO和ASZM-TEDA碳的混合物。 在该实施例中，ZnO与亚硫酰氯反应形成ZnCl 2和SO 2。 然后SO 2不可逆转地被ASZM-TEDA碳吸收。 这种ZnO和碳的组合具有高容量，是不可逆的，并且在-20℃以上有效地起作用。

    Oxidation resistant organic hydrogen getters
    9.
    发明申请
    Oxidation resistant organic hydrogen getters 有权
    耐氧化有机氢气吸气剂

    公开(公告)号：US20050051757A1

    公开(公告)日：2005-03-10

    申请号：US10891533

    申请日：2004-07-14

    申请人： Timothy Shepodd ,  George Buffleben

    发明人： Timothy Shepodd ,  George Buffleben

    IPC分类号： B01D53/86 ,  B01J20/02 ,  B01J20/26 ,  B01J23/42 ,  C01B3/50 ,  C01B13/02 ,  C09K3/00

    CPC分类号： B01D53/8671 ,  B01D2257/108 ,  B01J20/02 ,  B01J20/043 ,  B01J20/08 ,  B01J20/20 ,  B01J20/262 ,  B01J23/42 ,  B01J2220/46 ,  C01B3/508 ,  C01B13/0281 ,  C01B2210/0053

    摘要： A composition for removing hydrogen from an atmosphere, comprising a mixture of a polyphenyl ether and a hydrogenation catalyst, preferably a precious metal catalyst, and most preferably Pt. This composition is stable in the presence of oxygen, will not polymerize or degrade upon exposure to temperatures in excess of 200° C., or prolonged exposure to temperatures in the range of 100-300° C. Moreover, these novel hydrogen getter materials can be used to efficiently removing hydrogen from mixtures of hydrogen/inert gas (e.g., He, Ar, N2), hydrogen/ammonia atmospheres, such as may be encountered in heat exchangers, and hydrogen/carbon dioxide atmospheres. Water vapor and common atmospheric gases have no adverse effect on the ability of these getter materials to absorb hydrogen.

    摘要翻译： 一种用于从气氛中除去氢的组合物，其包含聚苯醚和氢化催化剂，优选贵金属催化剂，最优选Pt的混合物。 该组合物在氧气存在下是稳定的，在暴露于超过200℃的温度下不会聚合或降解，或长时间暴露于100-300℃的温度。此外，这些新颖的吸气剂材料可以 用于从氢/惰性气体（如He，Ar，N2）的混合物，氢气/氨气氛，例如热交换器中可能遇到的氢气/二氧化碳气氛中有效地除去氢气。 水蒸气和普通大气气体对这些吸气材料吸收氢气的能力没有不利影响。

    Castable three-dimensional stationary phase for electric field-driven applications
    10.
    发明申请
    Castable three-dimensional stationary phase for electric field-driven applications 有权

    公开(公告)号：US20050051430A1

    公开(公告)日：2005-03-10

    申请号：US10969134

    申请日：2004-10-19

    申请人： Timothy Shepodd ,  Leroy Whinnery ,  William Even

    发明人： Timothy Shepodd ,  Leroy Whinnery ,  William Even

    IPC分类号： G01N27/447 ,  G01N15/06 ,  C02F1/40

    CPC分类号： G01N27/44747

    摘要： A polymer material useful as the porous dielectric medium for microfluidic devices generally and electrokinetic pumps in particular. The polymer material is produced from an inverse (water-in-oil) emulsion that creates a 3-dimensional network characterized by small pores and high internal volume, characteristics that are particularly desirable for the dielectric medium for electrokinetic pumps. Further, the material can be cast-to-shape inside a microchannel. The use of bifunctional monomers provides for charge density within the polymer structure sufficient to support electroosmotic flow. The 3-dimensional polymeric material can also be covalently bound to the channel walls thereby making it suitable for high-pressure applications.