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    • 3. 发明授权
    • Tether plate sensor for measuring physical properties of fluid samples
    • 用于测量流体样品物理性能的系列板传感器
    • US07047794B2
    • 2006-05-23
    • US11090755
    • 2005-03-25
    • Damian HajdukEric CarlsonRavi Srinivasan
    • Damian HajdukEric CarlsonRavi Srinivasan
    • G01N11/10
    • G01N3/24G01N11/16G01N2203/0051G01N2203/0286G01N2203/0623
    • The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The miniature rheometer comprises an actuating element, a sensing element and a feedback circuit to provide rebalance of the shear force applied by the sample to the sensing element, which insures an exceptional stiffness in determining the shear strain so as to allow measurements of high accuracy. The parallel rheometer of the present invention allows simultaneous measurements of a plurality of samples so as to allow of a plurality of samples within a short time period. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element. Moreover, a rheometer is provided which comprises a force sensor based on stress-optic material.
    • 本发明涉及微型流变仪,平行流变仪和改进的力传感器元件,其可有利地与微型流变仪和平行流变仪组合使用。 微型流变仪适用于确定以少量样品形式提供的材料的流变特性。 微型流变仪包括致动元件,感测元件和反馈电路,以提供由样品施加到感测元件的剪切力的重新平衡,这确保了确定剪切应变的特殊刚度,以便允许高精度的测量。 本发明的并行流变仪允许多个样本的同时测量,以便在短时间内允许多个样本。 根据本发明的力传感器元件允许同时测量施加到传感器元件的剪切力和法向力。 此外,提供了一种流变仪,其包括基于应力光学材料的力传感器。
    • 4. 发明授权
    • Instrument for high throughput measurement of material physical properties of a plurality of samples
    • 用于高通量测量多个样品的材料物理性质的仪器
    • US06679130B2
    • 2004-01-20
    • US09779148
    • 2001-02-08
    • Damian HajdukEric CarlsonJ. Christopher FreitagOleg Kosolov
    • Damian HajdukEric CarlsonJ. Christopher FreitagOleg Kosolov
    • G01N300
    • B01L3/5085B01J2219/00707B01J2219/00718G01N5/00G01N11/00G01N19/00G01N29/02G01N29/222G01N2203/0286G01N2291/02466G01N2291/0255G01N2291/02818G01N2291/106Y10T436/12
    • An apparatus and method for screening combinatorial libraries of materials by measuring the response of individual library members to mechanical perturbations is described. The apparatus generally includes a sample holder for containing the library members, an array of probes for mechanically perturbing individual library members, and an array of sensors for measuring the response of each of the library members to the mechanical perturbations. Library members undergoing screening make up a sample array, and individual library members constitute elements of the sample array that are confined to specific locations on the sample holder. During screening, the apparatus mechanically perturbs individual library members by displacing the sample array (sample holder) and the array of probes. Typically, all of the elements of the sample array are perturbed simultaneously, but the apparatus also can also perturb individual or groups of sample array elements sequentially. The flexible apparatus and method can screen libraries of materials based on many different bulk physical properties, including Young's modulus (flexure, uniaxial extension, biaxial compression, and shear); hardness (indentation), failure (stress and strain at failure, toughness), adhesion (tack, loop tack), and flow (viscosity, melt flow indexing, and rheology), among others.
    • 描述了通过测量单个文库成员对机械扰动的响应来筛选材料组合文库的装置和方法。 该装置通常包括用于容纳库构件的样本保持器,用于机械扰乱各个库构件的探针阵列,以及用于测量每个库构件对机械扰动的响应的传感器阵列。 正在进行筛选的图书馆成员组成一个样本数组,单独的图书馆成员构成了样本数组的元素,它们限于样本持有者的特定位置。 在筛选期间,设备通过移位样品阵列(样品架)和探针阵列来机械地干扰各个库成员。 通常,样本阵列的所有元素都被同时扰动,但是该装置也可以顺序扰乱单个或组的样本阵列元素。 灵活的装置和方法可以基于许多不同的体积物理性质(包括杨氏模量(挠曲,单轴延伸,双轴压缩和剪切))筛选材料库; 硬度(压痕),破坏(破坏时的应力和应变,韧性),粘附性(粘性,环粘性)和流动性(粘度,熔体流动指数和流变学)等。
    • 8. 发明申请
    • Rheometer for rapidly measuring small quantity samples
    • 用于快速测量小批量样品的流变仪
    • US20050166667A1
    • 2005-08-04
    • US11090755
    • 2005-03-25
    • Damian HajdukEric CarlsonRavi Srinivasan
    • Damian HajdukEric CarlsonRavi Srinivasan
    • G01N19/00G01L1/16G01L1/24G01N3/02G01N3/24G01N11/14G01N11/16
    • G01N3/24G01N11/16G01N2203/0051G01N2203/0286G01N2203/0623
    • The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The miniature rheometer comprises an actuating element, a sensing element and a feedback circuit to provide rebalance of the shear force applied by the sample to the sensing element, which insures an exceptional stiffness in determining the shear strain so as to allow measurements of high accuracy. The parallel rheometer of the present invention allows simultaneous measurements of a plurality of samples so as to allow of a plurality of samples within a short time period. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element. Moreover, a rheometer is provided which comprises a force sensor based on stress-optic material.
    • 本发明涉及微型流变仪,平行流变仪和改进的力传感器元件,其可有利地与微型流变仪和平行流变仪组合使用。 微型流变仪适用于确定以少量样品形式提供的材料的流变特性。 微型流变仪包括致动元件,感测元件和反馈电路,以提供由样品施加到感测元件的剪切力的重新平衡,这确保了确定剪切应变的特殊刚度,以便允许高精度的测量。 本发明的并行流变仪允许多个样本的同时测量,以便在短时间内允许多个样本。 根据本发明的力传感器元件允许同时测量施加到传感器元件的剪切力和法向力。 此外,提供了一种流变仪,其包括基于应力光学材料的力传感器。