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    • 4. 发明申请
    • 2-D MEMS TRIBOMETER WITH COMB DRIVES
    • 具有组合驱动的2-D MEMS测速仪
    • US20110265559A1
    • 2011-11-03
    • US13099113
    • 2011-05-02
    • Yunje OhSyed Amanula Syed AsifOden L. Warren
    • Yunje OhSyed Amanula Syed AsifOden L. Warren
    • G01N3/48
    • G01N3/42B82Y35/00G01N2203/0286G01Q60/366
    • A microelectromechanical (MEMS) nanoindenter transducer including a body, a probe coupled to and moveable relative to the body, the probe holding a removeable indenter tip, a first micromachined comb drive and a second micromachined comb drive. The first micromachined comb drive includes an actuator comprising a plurality of electrostatic capacitive actuators configured to drive the probe along a first axis, including in an indentation direction, in response to an applied bias voltage, and a displacement sensor comprising a plurality of differential capacitive sensors having capacitance levels which together are representative of a position of the probe relative to the first axis. The second micromachined comb drive includes an actuator comprising a plurality of electrostatic capacitive actuators configured to drive the probe along a second axis, which is perpendicular to the first axis, in response to an applied bias voltage, and a displacement sensor comprising a plurality of differential capacitive sensors having capacitance levels which together are representative of a position of the probe relative to the second axis. Each of the electrostatic capacitive actuators and the differential capacitive sensors comprises an electrode comb pair, each electrode comb pair including a fixed electrode comb coupled to the body and a moveable electrode comb coupled to the probe.
    • 一种微机电(MEMS)纳米压头换能器,包括主体,耦合到主体并且可相对于主体移动的探针,探头保持可移除的压头,第一微加工梳状驱动器和第二微加工梳状驱动器。 第一微加工梳状驱动器包括致动器,其包括多个静电电容致动器,其被配置为响应于所施加的偏置电压沿着包括在压入方向的第一轴线驱动探针;以及位移传感器,其包括多个差分电容传感器 具有一起代表探针相对于第一轴的位置的电容水平。 第二微加工梳状驱动器包括致动器,其包括多个静电电容致动器,其被配置为响应于所施加的偏置电压沿着垂直于第一轴线的第二轴线驱动探头;以及位移传感器,其包括多个差动 电容传感器具有一起代表探针相对于第二轴的位置的电容水平。 每个静电电容致动器和差分电容传感器包括电极梳对,每个电极梳对包括耦合到本体的固定电极梳和耦合到探针的可移动电极梳。
    • 5. 发明授权
    • 2-D MEMS tribometer with comb drives
    • 具有梳齿驱动器的2-D MEMS摩擦计
    • US09157845B2
    • 2015-10-13
    • US13099113
    • 2011-05-02
    • Yunje OhSyed Amanula Syed AsifOden L. Warren
    • Yunje OhSyed Amanula Syed AsifOden L. Warren
    • G01N3/42B82Y35/00G01Q60/36
    • G01N3/42B82Y35/00G01N2203/0286G01Q60/366
    • A microelectromechanical (MEMS) nanoindenter transducer including a body, a probe coupled to and moveable relative to the body, the probe holding a removeable indenter tip, a first micromachined comb drive and a second micromachined comb drive. The first micromachined comb drive includes an actuator comprising a plurality of electrostatic capacitive actuators configured to drive the probe along a first axis, including in an indentation direction, in response to an applied bias voltage, and a displacement sensor comprising a plurality of differential capacitive sensors having capacitance levels which together are representative of a position of the probe relative to the first axis. The second micromachined comb drive includes an actuator comprising a plurality of electrostatic capacitive actuators configured to drive the probe along a second axis, which is perpendicular to the first axis, in response to an applied bias voltage, and a displacement sensor comprising a plurality of differential capacitive sensors having capacitance levels which together are representative of a position of the probe relative to the second axis. Each of the electrostatic capacitive actuators and the differential capacitive sensors comprises an electrode comb pair, each electrode comb pair including a fixed electrode comb coupled to the body and a moveable electrode comb coupled to the probe.
    • 一种微机电(MEMS)纳米压头换能器,包括主体,耦合到主体并且可相对于主体移动的探针,探头保持可移除的压头,第一微加工梳状驱动器和第二微加工梳状驱动器。 第一微加工梳状驱动器包括致动器,其包括多个静电电容致动器,其被配置为响应于所施加的偏置电压沿着包括在压入方向的第一轴线驱动探针;以及位移传感器,其包括多个差分电容传感器 具有一起代表探针相对于第一轴的位置的电容水平。 第二微加工梳状驱动器包括致动器,其包括多个静电电容致动器,其被配置为响应于所施加的偏置电压沿着垂直于第一轴线的第二轴线驱动探头;以及位移传感器,其包括多个差动 电容传感器具有一起代表探针相对于第二轴的位置的电容水平。 每个静电电容致动器和差分电容传感器包括电极梳对,每个电极梳对包括耦合到本体的固定电极梳和耦合到探针的可移动电极梳。
    • 8. 发明授权
    • Feedback influenced increased-quality-factor scanning probe microscope
    • 反馈影响增加质量因子扫描探针显微镜
    • US07425698B2
    • 2008-09-16
    • US11495403
    • 2006-07-28
    • Oden L. WarrenPeter R. NortonJohn F. Graham
    • Oden L. WarrenPeter R. NortonJohn F. Graham
    • H01J3/14G01N23/00G01B5/28
    • G01Q10/065G01Q60/34
    • An interfacial force microscope includes a differential-capacitance displacement sensor having a tip mounted on an oscillating member. The sensor generates displacement signals in response to oscillations of the member. A scanner is adjacent the sensor and supports a sample to be imaged. The scanner is actuable to move the sample relative to the sensor to bring the tip into intermittent contact with said sample as the member oscillates. A controller is in communication with the sensor and the scanner. The controller includes a sensor feedback circuit receiving the displacement signals and an AC setpoint signal. The AC setpoint signal has a frequency generally equal to the frequency at the peak of the displacement versus frequency curve of the sensor. The output of the sensor feedback circuit is applied to the sensor to oscillate the member. The controller also provides output to the scanner in response to the displacement signals to control the separation distance between the sensor and the sample.
    • 界面力显微镜包括具有尖端安装在振荡构件上的差动电容位移传感器。 传感器响应于构件的振荡产生位移信号。 扫描器与传感器相邻,并支持待成像的样品。 扫描器可致动以使样品相对于传感器移动,以使得尖端随着构件振荡而与所述样品间歇接触。 控制器与传感器和扫描仪通信。 控制器包括接收位移信号的传感器反馈电路和AC设定点信号。 交流设定点信号的频率大体上等于传感器位移对频率曲线峰值处的频率。 传感器反馈电路的输出被施加到传感器以使构件振荡。 控制器还响应于位移信号向扫描仪提供输出,以控制传感器和样品之间的间隔距离。