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1. 发明申请

WO2005086883A2 MICRO SLIT VISCOMETER WITH MONOLITHICALLY INTEGRATED PRESSURE SESONRS 审中-公开
标题翻译： MICRO SLIT VISCOMETER具有单一的集成压力SESONRS
公开(公告)号：WO2005086883A2
公开(公告)日：2005-09-22
申请号：PCT/US2005/007869
申请日：2005-03-11
申请人： RHEOSENSE, INC. , BAEK, Seong-Gi
发明人： BAEK, Seong-Gi
IPC分类号： G01L13/02 , G01N11/08
CPC分类号： G01L13/025 , G01N11/08
摘要： An improved micro slit viscometer includes a combined micrometer depth rectangular slit flow channel with monolithically integrated multiple pressure sensors in the flow channels and a pumping system that injects a test sample to the channel at a desired flow rate. Pressure sensing diaphragm of the monolithically integrated pressure sensors is smooth to minimize the flow disturbance thereby measuring accurate local pressures. With the measurement of the pressures at various locations of the channel the true viscosity of test sample can be calculated. The viscometer may consist of multiple flow channels and thus the true viscosity at multiple shear rates can be measured simultaneously for a given flow rate thereby obtaining a full viscosity curve as a function of shear rate of non-Newtonian liquids in a much faster manner. The viscometer needs only a miniscule amount of sample, which minimizes a waste of test material. The flow channels and the monolithically integrated pressure sensors are fabricated using microfabrication processes o wafers and combined, which greatly reduce the production costs.
摘要翻译：改进的微缝隙粘度计包括在流动通道中具有单片集成多压力传感器的组合千分尺深度矩形狭缝流动通道和以期望流量将测试样品注入通道的泵送系统。单片集成压力传感器的压力传感膜片是平滑的，以最小化流动扰动，从而测量精确的局部压力。通过测量通道各个位置的压力，可以计算出测试样品的真实粘度。粘度计可以由多个流动通道组成，因此可以在给定流速下同时测量多个剪切速率下的真实粘度，从而以更快的速度获得非牛顿液体的剪切速率的函数的全粘度曲线。粘度计只需要少量样品，最大限度地减少测试材料的浪费。流动通道和单片集成压力传感器是使用微晶加工和组合的方式制造的，这大大降低了生产成本。

2. 发明申请

WO2015157698A1 VISCOMETER AND METHODS FOR USING THE SAME 审中-公开
标题翻译：粘度计及其使用方法
公开(公告)号：WO2015157698A1
公开(公告)日：2015-10-15
申请号：PCT/US2015/025417
申请日：2015-04-10
申请人： RHEOSENSE, INC.
发明人： BAEK, Seong-Gi
IPC分类号： G01N11/04
CPC分类号： G01N11/02 , G01N11/08 , G01N25/04 , G01N33/487 , G01N2011/002 , G01N2011/0026
摘要： A viscometer includes a viscosity sensor with a liquid flow channel and at least two pressure sensors positioned along the liquid flow channel and configured to measure a pressure drop of a liquid flowing through the liquid flow channel, and a dispensing mechanism configured to cause dispensing of a liquid from the syringe to the viscosity sensor at a known flow rate. The dispensing mechanism and the viscosity sensor are configured to couple with a syringe configured to contain a liquid. The viscometer further includes an electronic controller configured to control operations of the dispensing mechanism and receive and process data from the viscosity sensor. The viscometer includes a sample loading interface, included in the syringe, through which the viscometer is configured to receive the liquid. The sample loading interface includes a selection valve coupled with, and located between, the viscosity sensor and the syringe.
摘要翻译：粘度计包括具有液体流动通道的粘度传感器和沿着液体流动通道定位的至少两个压力传感器，其被配置成测量流过液体流动通道的液体的压降;以及分配机构，其配置成使得分配液体以已知的流速从注射器到粘度传感器。分配机构和粘度传感器构造成与配置成容纳液体的注射器相连。粘度计进一步包括电子控制器，该电子控制器被配置为控制分配机构的操作并接收和处理来自粘度传感器的数据。粘度计包括包括在注射器中的样品加载界面，粘度计通过该样品加载界面配置为接收液体。样品加载界面包括与粘度传感器和注射器结合并位于粘度传感器和注射器之间的选择阀。

3. 发明申请

WO2009061943A2 MICRO RHEOMETER FOR MEASURING FLOW VISCOSITY AND ELASTICITY FOR MICRON SAMPLE VOLUMES 审中-公开
标题翻译：微型流变仪用于测量微流量样品的流动粘度和弹性
公开(公告)号：WO2009061943A2
公开(公告)日：2009-05-14
申请号：PCT/US2008/082669
申请日：2008-11-06
申请人： RHEOSENSE, INC. , BAEK, Seong-Gi
发明人： BAEK, Seong-Gi
IPC分类号： G01N11/08 , G01N11/00
CPC分类号： G01N11/08
摘要： A micro-rheometer for measuring flow characteristics such as viscosity, elasticity, and flow rate of a sample liquid combines well defined micro-fabricated flow channels having geometry changes forming a constriction region therein to a monolithically fabricated pressure sensor arrays. The pressure sensor array positions pressure sensors to measure the viscosity of the sample liquid while flowing in a uniform length of the flow passage and to measure the extensional viscosity while flowing through the constriction region of the passage. The invention can improve the measurement accuracy of the flow rate, viscosities, or elasticity's over a wide range of shear rate. The accuracy of the viscosity over a broader range of shear rate or flow rate measurement over broader range of flow rates can be accomplished by employing monolithically integrated pressure sensors fabricated with different sensitivities disposed in a known manner. The invention further includes necessary components such as a display, a pumping system, valve manifolds, and software for a portable or laboratory measurement instrument, process control, and high throughput measurements.
摘要翻译：用于测量样品液体的流动特性（例如粘度，弹性和流动速率）的微流变仪将具有形成其收缩区域的几何变化的定义明确的微制造流动通道与单片制造的压力传感器阵列。压力传感器阵列对压力传感器进行定位，以在流动通道的均匀长度中测量样品液体的粘度，并且在流过通道的收缩区域时测量拉伸粘度。本发明可以在很宽的剪切速率范围内提高流速，粘度或弹性的测量精度。可以通过采用以已知方式设置的具有不同灵敏度的单片集成压力传感器来实现在更宽范围的流速下在更宽范围的剪切速率或流速测量上的粘度精度。本发明进一步包括诸如显示器，泵送系统，阀歧管以及用于便携式或实验室测量仪器的软件，过程控制和高通量测量的必要组件。

4. 发明申请

WO2022240899A1 VISCOMETER WITH REDUCED DEAD-VOLUME AND HIGH DYNAMIC RANGE 审中-公开
公开(公告)号：WO2022240899A1
公开(公告)日：2022-11-17
申请号：PCT/US2022/028625
申请日：2022-05-10
申请人： RHEOSENSE, INC.
发明人： BAEK, Seong-Gi , ELLIOTT, Stacey Lynn
IPC分类号： A61M5/31 , G01N11/08 , G01N2011/0013 , G01N2011/0026
摘要： A viscometer includes a viscosity sensor with a liquid flow channel for measuring a viscosity of a liquid flowing through the liquid flow channel, a manifold with an inlet and an outlet for receiving a liquid sample through the inlet of the manifold and providing the received liquid sample through the outlet of the manifold to the viscosity sensor, and a pump coupled with the manifold for causing an in-flow of the liquid sample into the manifold through the inlet of the manifold and an out-flow of the received liquid sample from the manifold through the outlet of the manifold. Also disclosed is a viscosity sensor module with two or more viscosity sensors.

5. 发明申请

WO2003038388A1 PRESSURE SENSING DEVICE FOR RHEOMETERS 审中-公开
标题翻译：压力传感装置
公开(公告)号：WO2003038388A1
公开(公告)日：2003-05-08
申请号：PCT/US2002/035290
申请日：2002-10-31
申请人： RHEOSENSE, INC.
发明人： BAEK, Seong-Gi
IPC分类号： G01L7/00
CPC分类号： G01L9/0042 , G01L9/0073 , G01L9/0079 , G01L15/00 , G01L19/0092 , G01M13/022 , G01N11/08
摘要： An improved rheometer plate (6, 7) includes a smooth sensing surface (12) with monolithically integrated miniature pressure sensors which do not interfere with the smooth surface (12). Pressure sensing diaphragms formed by the smooth surface (12) deflect in response to local pressures against the surface to enable the measurement of unperturbed local pressures of materials sheared between plates (16, 17). The pressure sensors are sufficiently small that measured pressures are considered to be significantly local properties compared to the size of the plate. Normal stress differences and viscosity of fluid are measured accordingly. The membrane (10) covers a plurality of wells or recesses (13) with pressure sensors located in the wells (13) to measure the deflection of the membreane (10) over the wells (13). Capacitive or other sensors may be used. The rheometer plate can be used as part of a slit rheometer with a slit of varying dimensions.
摘要翻译：改进的流变仪板（6,7）包括具有不干涉光滑表面（12）的单片集成微型压力传感器的平滑感测表面（12）。由光滑表面（12）形成的压力传感膜片响应于对表面的局部压力而偏转，以便测量在板（16,17）之间剪切的材料的不受干扰的局部压力。压力传感器足够小，与测量板的尺寸相比，被测压力被认为是显着的局部性质。相应地测量流体的正常应力差和粘度。膜（10）覆盖多个井或凹槽（13），其中压力传感器位于井（13）中，以测量在井（13）上的膜片（10）的偏转。可以使用电容或其他传感器。流变仪板可用作具有不同尺寸的狭缝的狭缝流变仪的一部分。

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