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    • 1. 发明申请
    • MICROFLUIDIC DEVICE AND MICROTUBE THEREFOR
    • 微流控器件及其MICROTUBE
    • WO2009003002A1
    • 2008-12-31
    • PCT/US2008/068113
    • 2008-06-25
    • INTEGRATED SENSING SYSTEMS, INC.SPARKS, Douglas RayRILEY, DianeNAJAFI, Nader
    • SPARKS, Douglas RayRILEY, DianeNAJAFI, Nader
    • G01F1/84G01F1/76G01N27/06
    • G01F1/8472G01F1/8445
    • A microfluidic device for assessing properties of a fluid. The device utilizes a microtube (10) capable of different vibration modes for promoting certain performance and/or structural aspects of the device. The microtube (10) is supported by a base (12) so as to be spaced apart from a substrate surface (52). The microtube (10) has a peripheral portion (14) surrounding the base (12), arms (16) supporting the peripheral portion (14) from the base (12), and a continuous internal microchannel (18) having at least first and second microchannel portions (18). Each microchannel portion (18) defines a separate flow route, and each flow route originates at the base (12), continues through a portion of the peripheral portion (14), and returns to the base (12). The first and second microchannel portions (18) are fluidically connected to inlet and outlet ports (26, 32), respectively, within the base (12). Vibration of the microtube (10) is induced and sensed by driving and sensing elements (60A-B, 62A-B). Fluid properties are determined from outputs of the sensing elements (62A-B).
    • 用于评估流体性质的微流体装置。 该装置利用能够具有不同振动模式的微管(10)来促进装置的某些性能和/或结构方面。 微管(10)由基部(12)支撑,以便与衬底表面(52)间隔开。 微管(10)具有围绕基部(12)的周边部分(14),从基部(12)支撑周边部分(14)的臂(16)和连续的内部微通道(18),其具有至少第一和 第二微通道部分(18)。 每个微通道部分(18)限定单独的流动路径,并且每个流动路线起始于基部(12),继续通过周边部分(14)的一部分,并返回到基部(12)。 第一和第二微通道部分18分别在基部(12)内流体连接到入口端口(26,32)。 通过驱动和感测元件(60A-B,62A-B)感应和感测微管(10)的振动。 流体性质由感测元件(62A-B)的输出确定。
    • 3. 发明申请
    • SYSTEM AND METHOD OF ASSESSING A PROPERTY OF A FLOWING FLUID
    • 评估流动流体特性的系统和方法
    • WO2009076287A2
    • 2009-06-18
    • PCT/US2008/085866
    • 2008-12-08
    • INTEGRATED SENSING SYSTEMS, INC.SPARKS, Douglas RaySMITH, Richard ThayreNAJAFI, Nader
    • SPARKS, Douglas RaySMITH, Richard ThayreNAJAFI, Nader
    • G01N33/00G01F17/00G01N27/00G01D21/02B81B7/00
    • G01F1/8445G01N9/002
    • A fluid sensing system and method for sensing properties of a flowing fluid. The system and method entail a microfluidic device (10) having a micromachined tube (14) supported above a substrate (12), a tube passage (20) within a freestanding portion (16) of the tube (14), an inlet (36a) and outlet (36b) in fluidic communication with the tube passage (20) and an exterior of the microfluidic device (10), elements (22) for vibrating the freestanding portion (16) of the tube (14), and elements (24) for sensing movement of the freestanding portion (16) of the tube (14) so as to measure the vibration frequency and/or deflection of the freestanding portion (16) and produce therefrom at least one output corresponding to a property of a fluid flowing through the tube passage (20). The system and method further entail placing the microfluidic device (10) in a flowing fluid so that a fraction of the fluid enters the tube passage (20), and processing the output of the device (10) to compute a property of the fluid.
    • 用于感测流动流体特性的流体传感系统和方法。 该系统和方法需要微流体装置(10),其具有支撑在基底(12)上方的微加工管(14),管(14)的独立部分(16)内的管通道(20),入口(36a )和与管通道(20)和微流体装置(10)的外部流体连通的出口(36b),用于振动管(14)的独立部分(16)的元件(22),以及元件(24 ),用于感测管(14)的独立式部分(16)的运动,从而测量独立式部分(16)的振动频率和/或偏转并由此产生至少一个对应于流体流动特性的输出 通过管通道(20)。 该系统和方法还需要将微流体装置(10)放置在流动流体中,使得一部分流体进入管通道(20),并处理装置(10)的输出以计算流体的性质。