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    Lifting gate polydimethylsiloxane microvalves and pumps for microfluidic control
    5.
    发明授权
    Lifting gate polydimethylsiloxane microvalves and pumps for microfluidic control 有权

    公开(公告)号：US09791068B2

    公开(公告)日：2017-10-17

    申请号：US14155183

    申请日：2014-01-14

    申请人： The Regents of the University of California

    发明人： Richard A. Mathies ,  Jungkyu Kim ,  Erik C. Jensen

    IPC分类号： F04B19/00 ,  F16K99/00

    CPC分类号： F16K99/0015 ,  F04B19/006 ,  F16K99/0005 ,  F16K99/0059 ,  F16K2099/008 ,  F16K2099/0094

    摘要： The present disclosure relates to method, system for microfluidic control. One or more embodiments of the disclosure relate to pneumatically actuated “lifting gate” microvalves and pumps. In some embodiments, a microfluidic control module is provided, which comprises a plurality of pneumatic channels and a plurality of lifting gate valves configured to be detachably affixed to a substrate. The plurality of lifting gate valves are aligned with at least one fluidic channel on the substrate when affixed to the substrate. Each of the valves comprises: a pneumatic layer, a fluidic layer, and a pneumatic displacement chamber between the pneumatic layer and the fluidic layer. The fluidic layer has a first side facing the pneumatic layer and a second side facing away from the pneumatic layer, wherein the second side has a protruding gate configured to obstruct a flow of the fluidic channel when the fluidic layer is at a resting state.

    Bilayer Microvalve Arrays for Pneumatic and Fluidic Applications
    8.
    发明申请
    Bilayer Microvalve Arrays for Pneumatic and Fluidic Applications 审中-公开

    公开(公告)号：US20170184221A1

    公开(公告)日：2017-06-29

    申请号：US15388332

    申请日：2016-12-22

    申请人： UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION, INC.

    发明人： SHAMUS MCNAMARA ,  JOSEPH DEVIN SCHNEIDER

    IPC分类号： F16K99/00 ,  G08B6/00

    CPC分类号： F16K99/0042 ,  F16K99/0015 ,  F16K2099/008 ,  F16K2099/0082 ,  G08B6/00

    摘要： A strained bilayer film with reinforcing members is used to open and close gas flow outlets in a microvalve array. The bottom layer of the bilayer film is compressive and the top layer is tensile. Reinforcing members are made from compressive material that accomplishes the dual objectives of reducing potential defects at the interface between the anchor region and the free region of the actuator, and controlling the stresses along the edges of the strained bilayer to avoid curling as the actuator unrolls from its normal coiled configuration in response to an applied voltage. Because of the configuration, the strained bilayer film occupies a minimal amount of space compared to other systems when the valve is opened, and it permits a higher density of microvalves to be utilized. Optional supports are provided over gas flow channel openings to increase the area over which the voltage is applied, increasing electrostatic stability of the actuators in maintaining their unrolled state for a variety of uses. Such uses include, but are not limited to, pneumatic manifolds or other practical uses that involve transmission of air or fluids, including for lab-on-a-chip applications, as well as for providing air flow channels for a configurable tactile tablet to provide the visually impaired with a tactile representation of shapes and designs, to name some examples.

    Microvalve having improved air purging capability
    10.
    发明授权
    Microvalve having improved air purging capability 有权
    微型阀具有改善的排气能力

    公开(公告)号：US09328850B2

    公开(公告)日：2016-05-03

    申请号：US14313147

    申请日：2014-06-24

    申请人： Zhejiang DunAn Hetian Metal Co., Ltd.

    发明人： Edward Nelson Fuller ,  Parthiban Arunasalam ,  Chen Yang ,  Mark Luckevich ,  Joe Ojeda

    IPC分类号： F16K99/00

    CPC分类号： F16K99/0021 ,  F16K99/0011 ,  F16K99/0044 ,  F16K99/0055 ,  F16K2099/008 ,  Y10T137/2213 ,  Y10T137/2224 ,  Y10T137/3084

    摘要： A microvalve includes a base plate having a surface defining an actuator cavity. A venting groove extends from a first cavity portion of the actuator cavity having a dead end region to a second cavity portion of the actuator cavity having a structure that can vent air from the microvalve. A cover plate includes a surface having an actuator cavity provided therein that includes a first cavity portion having a dead end region and a second cavity portion having a structure that can vent air from the microvalve. An intermediate plate includes a displaceable member that is disposed within the actuator cavity for movement between a closed position, wherein the displaceable member prevents fluid communication through the microvalve, and an opened position, wherein the displaceable member does not prevent fluid communication through the microvalve.

    摘要翻译： 微型阀包括具有限定致动器腔的表面的基板。 排气槽从具有死端区域的致动器空腔的第一空腔部分延伸到致动器空腔的第二空腔部分，其具有能够从微型阀排出空气的结构。 盖板包括具有设置在其中的致动器腔的表面，其包括具有死端区域的第一空腔部分和具有能够从微型阀排出空气的结构的第二空腔部分。 中间板包括设置在致动器腔内的可移动构件，用于在关闭位置之间移动，其中可移位构件防止通过微型阀的流体连通和打开位置，其中可移位构件不阻止流体通过微型阀连通。