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    • 45. 发明申请
    • Microfabricated Fluid Dynamic Bearing
    • 微型流体动力轴承
    • US20100303393A1
    • 2010-12-02
    • US12473243
    • 2009-05-27
    • Roger L. Hipwell, JR.Alan L. GrantzDadi SetiadiYang Li
    • Roger L. Hipwell, JR.Alan L. GrantzDadi SetiadiYang Li
    • F16C32/06B44C1/22
    • G11B19/2036F16C17/105F16C33/107F16C2370/12
    • A fluid dynamic bearing formed by a microelectromechanical systems (MEMS) wafer-level batch-fabrication process is provided. The process results in a high performance and high reliability fluid dynamic bearing having features including higher bearing lifetime at high RPM, improved bearing stiffness, durability and thrust/restoring forces capabilities. The present invention is especially useful with small form factor disc drive memory devices having constraints in motor height, such as a 2.5 inch disc drive, requiring high performance including high rotational speed and large areal density. A sacrificial layer is utilized in the process to simultaneously form symmetrical facing surfaces of relatively rotatable components. The facing surfaces define, therebetween, a desired feature, such as a journal bearing, a thrust bearing, a fluid channel, a fluid reservoir, a capillary seal, pressure generating grooves, and other profile geometries. Such geometry control allows for design freedom in obtaining a desired bearing performance and stiffness.
    • 提供了由微机电系统(MEMS)晶圆级批量制造工艺形成的流体动力轴承。 该过程产生了高性能和高可靠性的流体动力轴承,其特征包括在高转速下具有较高的轴承寿命,改进的轴承刚度,耐用性和推力/恢复力能力。 本发明对于具有马达高度限制的小尺寸盘驱动器存储器件是特别有用的,例如2.5英寸盘驱动器,需要包括高旋转速度和大面密度的高性能。 在该过程中利用牺牲层以同时形成相对可旋转部件的对称面对表面。 相对的表面在它们之间限定期望的特征,例如轴颈轴承,推力轴承,流体通道,流体储存器,毛细管密封件,压力产生槽和其它轮廓几何形状。 这种几何控制允许在获得期望的轴承性能和刚度方面的设计自由度。
    • 47. 发明申请
    • PROBE WITH BIDIRECTIONAL ELECTROSTATIC ACTUATION
    • 具有双向静电激励的探头
    • US20100123470A1
    • 2010-05-20
    • US12272128
    • 2008-11-17
    • Dadi SetiadiWayne Bonin
    • Dadi SetiadiWayne Bonin
    • G01R31/02
    • G01R1/06733G01R1/06716G01R1/06744
    • A probe system that has a probe body comprising at least three arms extending from a central region and a probe tip centrally located on the probe body in the central region. A substrate is proximate the probe body opposite the probe tip. A first electrode is positioned to provide a centrally positioned voltage across the probe body and the substrate and a second electrode set is positioned radially outward from the first electrode, to provide an outer voltage across at least one of the at least three arms and the substrate. The probe structure may have, for example, four arms. Methods of actuating the probe tip are provided.
    • 探针系统,其具有探针体,该探针体包括从中心区域延伸的至少三个臂和在中心区域中心位于探针主体上的探针末端。 衬底靠近与探针尖端相对的探针体。 定位第一电极以提供穿过探针主体和衬底的中心定位的电压,并且第二电极组从第一电极径向向外定位,以提供穿过至少三个臂中的至少一个臂和衬底的外部电压 。 探针结构可以具有例如四个臂。 提供致动探针尖端的方法。
    • 49. 发明申请
    • WIRELESS AND BATTERY-LESS MONITORING UNIT
    • 无线和无电池监控单元
    • US20090303076A1
    • 2009-12-10
    • US12132673
    • 2008-06-04
    • Dadi SetiadiSong S. XueInsik Jin
    • Dadi SetiadiSong S. XueInsik Jin
    • G08C19/16
    • H04Q9/00H04Q2209/47H04Q2209/75H04Q2209/886
    • A wireless and battery-less sensor device is described. The sensor device includes a mechanical energy harvesting device, a sensor electrically coupled to the mechanical energy harvesting module. The sensor is configured to sense with the power supplied by the mechanical energy harvesting device. Nonvolatile memory is configured to store output from the sensor. A radio frequency energy harvesting module is electrically coupled to a radio frequency transmitter. The radio frequency transmitter is configured to transmit the output from the sensor with the power supplied by the radio frequency energy harvesting device. Systems and methods utilizing the wireless and battery-less sensor device are also described.
    • 描述了无线和无电池的传感器装置。 传感器装置包括机械能量收集装置,电耦合到机械能量收集模块的传感器。 传感器被配置为用机械能量收集装置提供的功率感测。 非易失性存储器被配置为存储来自传感器的输出。 射频能量采集模块电耦合到射频发射机。 射频发射器被配置为利用由射频能量收集装置提供的电力来传输来自传感器的输出。 还描述了利用无线和无电池传感器装置的系统和方法。