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    PARAMETRIC FEEDBACK OSCILLATORS
    2.
    发明申请
    PARAMETRIC FEEDBACK OSCILLATORS 有权
    参数反馈振荡器

    公开(公告)号：US20110260802A1

    公开(公告)日：2011-10-27

    申请号：US13095692

    申请日：2011-04-27

    申请人： Luis Guillermo Villanueva Torrijo ,  Rassul Karabalin ,  Matthew Matheny ,  Philip X.L Feng ,  Michael C. Cross ,  Michael L. Roukes

    发明人： Luis Guillermo Villanueva Torrijo ,  Rassul Karabalin ,  Matthew Matheny ,  Philip X.L Feng ,  Michael C. Cross ,  Michael L. Roukes

    IPC分类号： H03B5/36

    CPC分类号： H03B5/326

    摘要： A parametric feedback oscillator includes a resonator which has at least one transduction element and at least one electromechanical resonating element. The resonator is configured to accept as input a parametric excitation signal at a frequency 2ω0 and to provide a resonating output signal at a frequency ω0. A cascaded feedback path in any electrically coupled cascade order includes at least one non-linear element, at least one phase shifter electrically, and at least one amplifier. The cascade feedback path is configured to receive as input the resonating output signal at a frequency ω0 and configured to provide as output a feedback path signal as the parametric excitation signal at a frequency 2ω0 to the resonator. A parametric feedback oscillator output terminal is configured to provide the resonating output signal at the frequency ω0 as an output signal. A method of causing a parametric feedback oscillation is also described.

    摘要翻译： 参数反馈振荡器包括具有至少一个换能元件和至少一个机电谐振元件的谐振器。 谐振器被配置为以频率2ω0接受参量激励信号作为输入，并且以频率ω0提供谐振输出信号。 任何电耦合级联阶段中的级联反馈路径包括至少一个非线性元件，至少一个移相器和至少一个放大器。 级联反馈路径被配置为接收频率为ω0的谐振输出信号作为输入，并且被配置为向谐振器提供作为频率为2ω0的参量激励信号作为输出的反馈路径信号。 参数反馈振荡器输出端子被配置为以频率ω0提供作为输出信号的谐振输出信号。 还描述了引起参数反馈振荡的方法。

    Active nems arrays for biochemical analyses
    5.
    发明申请
    Active nems arrays for biochemical analyses 有权
    用于生化分析的活性核素阵列

    公开(公告)号：US20090054267A1

    公开(公告)日：2009-02-26

    申请号：US12216062

    申请日：2008-06-27

    申请人： Michael L. Roukes ,  Scott E. Fraser ,  Jerry E. Solomon ,  Michael C. Cross

    发明人： Michael L. Roukes ,  Scott E. Fraser ,  Jerry E. Solomon ,  Michael C. Cross

    IPC分类号： C40B60/12

    CPC分类号： G01N29/036 ,  B82Y5/00 ,  B82Y35/00 ,  G01N33/54373 ,  G01N2291/0257

    摘要： A biofunctionalized nanoelectromechanical device (BioNEMS) for sensing single-molecules in solution by measuring the variation in the mechanical displacement of the BioNEMS device during a binding event is provided. The biofunctionalized nanoelectromechanical device according to the invention generally comprises a nanomechanical mechanical resonator, a detector integral with the mechanical resonator for measuring the mechanical displacement of the resonator, and electronics connected to the detector for communicating the results to a user. A system of biofunctionalized nanoelectromechanical devices and a method for utilizing the biofunctionalized nanoelectromechanical device of the present invention are also provided.

    摘要翻译： 提供了一种生物功能化的纳米机电装置（BioNEMS），用于通过在绑定事件期间测量BioNEMS装置的机械位移的变化来感测溶液中的单分子。 根据本发明的生物功能化纳米机电装置通常包括纳米机械机械谐振器，与用于测量谐振器的机械位移的机械谐振器集成的检测器，以及连接到检测器的电子装置，用于将结果传达给用户。 还提供了一种生物功能化的纳米机电装置系统和利用本发明的生物功能化纳米机电装置的方法。

    Sensors based on giant planar hall effect in dilute magnetic semiconductors
    7.
    发明授权
    Sensors based on giant planar hall effect in dilute magnetic semiconductors 失效

    公开(公告)号：US06910382B2

    公开(公告)日：2005-06-28

    申请号：US10602548

    申请日：2003-06-23

    申请人： Hongxing Tang ,  Michael L. Roukes

    发明人： Hongxing Tang ,  Michael L. Roukes

    IPC分类号： G01L9/00 ,  G01L9/16 ,  G01L9/14

    CPC分类号： G01L9/0042 ,  G01L9/16

    摘要： Ferromagnetic semiconductor-based sensor devices, including sensors for detecting pressure changes and sensors for detecting magnetic fields, such as switching events in a magnetic recording medium. The pressure sensors of the present invention detect pressure changes using magnetoresistive measurement techniques, and in particular GPHE techniques. Magnetic field detection sensors such as magnetic switching detection sensors include ferromagnetic semiconductor-based materials that provide enhanced sensitivity relative to known materials and techniques. Such magnetic switching detection sensors according to the present invention are particularly useful as a read head sensor for HDD and other magnetic storage technologies.

    Displacement transducer utilizing miniaturized magnet and hall junction
    8.
    发明授权
    Displacement transducer utilizing miniaturized magnet and hall junction 失效
    位移传感器采用小型化磁铁和霍尔接头

    公开(公告)号：US06593731B1

    公开(公告)日：2003-07-15

    申请号：US09612828

    申请日：2000-07-07

    申请人： Michael L. Roukes ,  Franklin G. Monzon ,  Michael J. Murphy

    发明人： Michael L. Roukes ,  Franklin G. Monzon ,  Michael J. Murphy

    IPC分类号： G01B714

    CPC分类号： G01D5/145

    摘要： A displacement transducer in which relative displacement between a magnet and a Hall junction is sensed. Magnetic flux from the magnet is linked to the Hall junction in a direction perpendicular to the flow of current through the Hall junction. Relative displacement between the magnet and the Hall junction causes a change in the magnetic flux linked to the Hall junction which in turn causes a change in transverse voltage across the Hall junction. A signal representative of this voltage change is output from the transducer. The transducer may be part of a NEMS or MEMS.

    摘要翻译： 一种位移传感器，其中检测到磁体和霍尔结之间的相对位移。 来自磁体的磁通量与垂直于通过霍尔连接点的电流的方向连接到霍尔接头。 磁体和霍尔连接点之间的相对位移导致与霍尔连接点相关联的磁通量的变化，这又导致霍尔连接点上横向电压的变化。 代表该电压变化的信号从换能器输出。 传感器可以是NEMS或MEMS的一部分。

    ELECTROMECHANICAL OSCILLATORS, PARAMETRIC OSCILLATORS, AND TORSIONAL RESONATORS BASED ON PIEZORESISTIVE NANOWIRES
    10.
    发明申请
    ELECTROMECHANICAL OSCILLATORS, PARAMETRIC OSCILLATORS, AND TORSIONAL RESONATORS BASED ON PIEZORESISTIVE NANOWIRES 有权
    机电振荡器，参数振荡器和基于纯化纳米级的扭转谐振器

    公开(公告)号：US20130194048A1

    公开(公告)日：2013-08-01

    申请号：US13560037

    申请日：2012-07-27

    申请人： Philip X.-L. Feng ,  Luis Guillermo Villanueva ,  Michael L. Roukes

    发明人： Philip X.-L. Feng ,  Luis Guillermo Villanueva ,  Michael L. Roukes

    IPC分类号： H03B5/32

    CPC分类号： H03B5/32 ,  H03B5/30 ,  H03H7/00 ,  H03H9/02259 ,  H03H9/2463 ,  H03H9/505 ,  H03H2009/02291 ,  H03H2009/02496 ,  H03H2009/02519

    摘要： Doubly-clamped nanowire electromechanical resonators that can be used to generate parametric oscillations and feedback self-sustained oscillations. The nanowire electromechanical resonators can be made using conventional NEMS and CMOS fabrication methods. In very thin nanowire structures (sub-micron-meter in width), additive piezoresistance patterning and fabrication can be highly difficult and thus need to be avoided. This invention shows that, in piezoresistive nanowires with homogeneous material composition and symmetric structures, no conventional and additive piezoresistance loops are needed. Using AC and DC drive signals, and bias signals of controlled frequency and amplitude, output signals having a variety of frequencies can be obtained. Various examples of such resonators and their theory of operation are described.

    摘要翻译： 双夹紧纳米线机电谐振器，可用于产生参数振荡和反馈自持续振荡。 纳米线机电谐振器可以使用传统的NEMS和CMOS制造方法制成。 在非常薄的纳米线结构（亚微米级宽度）中，添加剂压阻图案化和制造可能非常困难，因此需要避免。 本发明表明，在具有均匀材料组成和对称结构的压阻纳米线中，不需要常规和附加的压阻环路。 使用AC和DC驱动信号以及受控频率和幅度的偏置信号，可以获得具有各种频率的输出信号。 描述了这种谐振器的各种示例及其操作理论。