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735 条记录 (耗时 0.044 秒)

    Real-time, active picometer-scale alignment, stabilization, and registration in one or more dimensions
    81.
    发明授权
    Real-time, active picometer-scale alignment, stabilization, and registration in one or more dimensions 有权
    在一个或多个维度上实时，活跃的波段尺度对齐，稳定和注册

    公开(公告)号：US07928409B2

    公开(公告)日：2011-04-19

    申请号：US11545498

    申请日：2006-10-11

    申请人： Thomas T. Perkins ,  Gavin M. King ,  Ashley R. Carter

    发明人： Thomas T. Perkins ,  Gavin M. King ,  Ashley R. Carter

    IPC分类号： G03F9/00

    CPC分类号： G01Q40/02 ,  G01Q10/065

    摘要： A method and apparatus for aligning, stabilizing and registering two or more structures in one or more dimensional space with picometer-scale precision. Low noise laser light is scattered by at least one or more structure or fiducial marks. One mark may be coupled to each structure to be positioned. The light which has been scattered off the fiducial marks is collected in a photo-sensitive device which enables real-time high-bandwidth position sensing of each structure. One or more of the structures should be mounted on a stage, and the stage can move in either one or more dimensions. The photo-sensitive device generates signals in response to the scattered light received, and the signals are used to modulate the position of the stage in a feedback loop.

    摘要翻译： 一种用于在一个或多个维度空间中对准，稳定和对准两个或多个结构的方法和装置，其尺寸精度为皮秒。 低噪声激光被至少一个或多个结构或基准标记分散。 一个标记可以联接到要定位的每个结构。 已经从基准标记分散的光被收集在能够实现每个结构的实时高带宽位置感测的光敏装置中。 一个或多个结构应安装在舞台上，舞台可以在一个或多个维度上移动。 光敏装置响应于所接收的散射光产生信号，并且该信号用于在反馈回路中调制载物台的位置。

    Laser doppler vibrometer employing active frequency feedback
    82.
    发明授权
    Laser doppler vibrometer employing active frequency feedback 有权
    激光多普勒振动计采用有源频率反馈

    公开(公告)号：US07894074B2

    公开(公告)日：2011-02-22

    申请号：US12317107

    申请日：2008-12-19

    申请人： John Lawall

    发明人： John Lawall

    IPC分类号： G01B9/02 ,  G01B11/02 ,  G01N21/41 ,  G01N29/04

    CPC分类号： G01H9/004

    摘要： A laser Doppler vibrometer for vibration measurement that employs active feedback to cancel the effect of large vibration excursions at low frequencies, obviating the need to unwrap phase data. The Doppler shift of a reflective vibrating test object is sensed interferometrically and compensated by means of a voltage-controlled oscillator driving an acousto-optic modulator. For frequencies within the servo bandwidth, the feedback signal provides a direct measurement of vibration velocity. For frequencies outside the servo bandwidth, feedback biases the interferometer at a point of maximal sensitivity, thus enabling phase-sensitive measurement of the high-frequency excursions. Using two measurements, one with a low bandwidth and one with a high bandwidth, more than five decades of frequency may be spanned. This approach is of particular interest for the frequently occurring situation where vibration amplitudes at low frequency exceed an optical wavelength, but knowledge of the vibration spectrum at high frequency is also important.

    摘要翻译： 用于振动测量的激光多普勒振动计，其采用主动反馈来消除低频下大振动偏移的影响，从而避免需要展开相位数据。 反射振动测试对象的多普勒频移被干涉测量并通过驱动声光调制器的压控振荡器进行补偿。 对于伺服带宽内的频率，反馈信号提供了对振动速度的直接测量。 对于伺服带宽以外的频率，反馈在最大灵敏度点偏置干涉仪，从而实现高频偏移的相敏测量。 使用两个测量，可以跨越超过五十年的频率，具有低带宽和高带宽的测量。 对于低频振动幅度超过光波长的频繁发生的情况，这种方法特别有意义，但高频振动谱的知识也很重要。

    Compact atomic magnetometer and gyroscope based on a diverging laser beam
    83.
    发明授权
    Compact atomic magnetometer and gyroscope based on a diverging laser beam 有权
    基于发散激光束的紧凑型原子磁强计和陀螺仪

    公开(公告)号：US07872473B2

    公开(公告)日：2011-01-18

    申请号：US12186690

    申请日：2008-08-06

    申请人： John Kitching ,  Elizabeth A. Donley ,  Eleanor Hodby ,  Andrei Shkel ,  Erik Jesper Eklund

    发明人： John Kitching ,  Elizabeth A. Donley ,  Eleanor Hodby ,  Andrei Shkel ,  Erik Jesper Eklund

    IPC分类号： G01V3/00

    CPC分类号： G01R33/26 ,  G01C19/60

    摘要： An atomic magnetometer that simultaneously achieves high sensitivity, simple fabrication and small size. This design is based on a diverging (or converging) beam of light that passes through an alkali atom vapor cell and that contains a distribution of beam propagation vectors. The existence of more than one propagation direction permits longitudinal optical pumping of atomic system and simultaneous detection of the transverse atomic polarization. The design could be implemented with a micro machined alkali vapor cell and light from a single semiconductor laser. A small modification to the cell contents and excitation geometry allows for use as a gyroscope.

    摘要翻译： 同时实现高灵敏度，简单制造和小尺寸的原子磁强计。 这种设计是基于通过碱性原子蒸汽池并且包含光束传播矢量分布的发散（或会聚的）光束。 存在多个传播方向允许原子系统的纵向光泵浦和横向原子极化的同时检测。 该设计可以用微加工的碱性蒸汽池和来自单个半导体激光器的光来实现。 对细胞内容和激发几何的小修改允许用作陀螺仪。

    Micellar gradient focusing
    84.
    发明授权
    Micellar gradient focusing 有权
    胶束梯度聚焦

    公开(公告)号：US07718046B2

    公开(公告)日：2010-05-18

    申请号：US10864485

    申请日：2004-06-10

    申请人： David J. Ross ,  Peter B. Howell ,  Wyatt N. Vreeland

    发明人： David J. Ross ,  Peter B. Howell ,  Wyatt N. Vreeland

    IPC分类号： B01D57/02

    CPC分类号： C07K1/26 ,  G01N30/02 ,  G01N30/34 ,  B01D15/3842

    摘要： A method and device are provided for affinity gradient focusing for directing at least one analyte in a solution containing a pseudostationary phase and located in a channel such as a capillary or a microchannel. The method includes establishing a steady-state spatial gradient in a retention factor of the pseudostationary phase for the at least one analyte. The analyte is caused to be moved within the channel whereby the concentration of the at least one analyte changes at one or more positions along the gradient. The pseudostationary phase is charged and the analyte is either neutral or charged or alternatively, the pseudostationary phase is neutral and the analyte is charged. The device may include a fluid channel, a pseudostationary phase having a retention factor gradient, an electrical current source and a pump system for establishing the bulk flow in the solution in the channel.

    摘要翻译： 提供了一种用于亲和梯度聚焦的方法和装置，用于将至少一种分析物引导到含有假阶段并且位于诸如毛细管或微通道的通道中的溶液中。 该方法包括在至少一种分析物的假定相的保留因子中建立稳态空间梯度。 导致分析物在通道内移动，由此至少一种分析物的浓度在沿梯度的一个或多个位置处变化。 假定相被充电，分析物是中性的或带电的，或者替代地，假定相是中性的并且分析物被充电。 该装置可以包括流体通道，具有保持因子梯度的假定相，电流源和用于在通道中的溶液中建立大量流的泵系统。

    System and method for holographic optic trap bonding
    85.
    发明授权
    System and method for holographic optic trap bonding 有权
    全息光学陷阱键合的系统和方法

    公开(公告)号：US07678222B2

    公开(公告)日：2010-03-16

    申请号：US11473398

    申请日：2006-06-23

    申请人： David G. Grier ,  Kosta Ladavac ,  Joy M. Barker

    发明人： David G. Grier ,  Kosta Ladavac ,  Joy M. Barker

    IPC分类号： B29C65/00

    CPC分类号： C09J5/00 ,  G03H2001/0077 ,  Y10S977/882

    摘要： A system and method for bonding and unbonding of small objects using small adhesive particles. The system and method includes the use of a plurality of optical tweezers to manipulate objects to be bonded and adhesive particles suspended in a fluid. The objects to be bonded (or unbonded) and the adhesive particles are positioned by lower power optical tweezers and then an intense bonding optical tweezer is activated to cause the adhesive to join the objects together (or used to unbond objects).

    摘要翻译： 一种使用小粘合剂颗粒粘合和粘合小物体的系统和方法。 该系统和方法包括使用多个光学镊子来操纵待粘合的物体和悬浮在流体中的粘合剂颗粒。 待粘合（或未粘合）的物体和粘合剂颗粒通过较低功率的光学镊子定位，然后激活强力粘合光学镊子以使粘合剂将物体连接在一起（或用于将物体接合）。

    Microfluidic flow manipulation device
    86.
    发明授权
    Microfluidic flow manipulation device 有权
    微流控流量装置

    公开(公告)号：US07658536B2

    公开(公告)日：2010-02-09

    申请号：US12106990

    申请日：2008-04-21

    申请人： Timothy J. Johnson ,  David J. Ross ,  Laurie E. Locascio

    发明人： Timothy J. Johnson ,  David J. Ross ,  Laurie E. Locascio

    IPC分类号： B01F5/00

    CPC分类号： G05D7/0694 ,  Y10S366/03 ,  Y10T137/0318 ,  Y10T137/2224 ,  Y10T137/87652

    摘要： Disclosed is an apparatus and method for the mixing of two microfluidic channels wherein several wells are oriented diagonally across the width of a mixing channel. The device effectively mixes the confluent streams with electrokinetic flow, and to a lesser degree, with pressure driven flow. The device and method may be further adapted to split a pair of confluent streams into two or more streams of equal or non-equal concentrations of reactants. Further, under electrokinetic flow, the surfaces of said wells may be specially coated so that the differing electroosmotic mobility between the surfaces of the wells and the surfaces of the channel may increase the mixing efficiency. The device and method are applicable to the steady state mixing as well as the dynamic application of mixing a plug of reagent with a confluent stream.

    摘要翻译： 公开了一种用于混合两个微流体通道的装置和方法，其中若干孔沿着混合通道的宽度倾斜地定向。 该装置将汇合流与电动流有效地混合，并且在较小程度上与压力驱动流混合。 装置和方法可以进一步适于将一对汇合流分成两个或更多个相等或不相等浓度的反应物流。 此外，在电动流动下，可以特别地涂覆所述孔的表面，使得孔的表面和通道表面之间的不同的电渗流动性可以提高混合效率。 该装置和方法适用于稳态混合以及将试剂塞与汇合流混合的动态应用。

    Four-wave mixing source of squeezed light for image processing and interferometry
    87.
    发明授权
    Four-wave mixing source of squeezed light for image processing and interferometry 有权
    用于图像处理和干涉测量的四波混合源

    公开(公告)号：US07453626B2

    公开(公告)日：2008-11-18

    申请号：US12036791

    申请日：2008-02-25

    申请人： Paul D. Lett ,  Colin F. McCormick ,  Vincent Boyer

    发明人： Paul D. Lett ,  Colin F. McCormick ,  Vincent Boyer

    IPC分类号： G02F1/39

    CPC分类号： G02F1/3536

    摘要： A four-wave mixing squeezed light source includes: a mixing medium having chi(3) non-linear characteristics including two atomic ground states coupled to each other by transitions through optically-excited states; a pump beam having a polarization and a frequency, said frequency being near the ground-to-excited atomic transition but far enough from the atomic transition such that the pump beam is substantially unabsorbed; and a probe beam having a polarization that is orthogonal with respect to the pump beam polarization, the probe beam having a frequency of the pump beam frequency plus or minus a frequency splitting of the two atomic ground states. The mixing medium, the pump beam and the probe beam interact to produce a phase conjugate beam having a polarization that is orthogonal to the pump beam polarization, such that the beams are non-degenerate with the pump beam, and the probe beam is amplified.

    摘要翻译： 四波混频挤压光源包括：具有chi（3）非线性特性的混合介质，包括通过光激发状态的过渡而彼此耦合的两个原子基态; 具有偏振和频率的泵浦光束，所述频率接近地面激发的原子跃迁，但距原子跃迁足够远，使得泵浦光束基本上不被吸收; 以及具有相对于泵浦光束偏振正交的偏振的探测光束，所述探测光束具有泵浦光束频率的频率加上或减去两个原子基态的频率分裂。 混合介质，泵浦光束和探测光束相互作用以产生具有与泵浦光束偏振正交的偏振的相位共轭光束，使得光束与泵浦光束不退化，并且探测光束被放大。

    Zig-zag shape biased anisotropic magnetoresistive sensor
    88.
    发明授权
    Zig-zag shape biased anisotropic magnetoresistive sensor 有权
    锯齿形偏置各向异性磁阻传感器

    公开(公告)号：US07450353B2

    公开(公告)日：2008-11-11

    申请号：US11246322

    申请日：2005-10-06

    申请人： David P. Pappas ,  Fabio da Silva ,  Jose Aumentado

    发明人： David P. Pappas ,  Fabio da Silva ,  Jose Aumentado

    IPC分类号： G11B5/33

    CPC分类号： G11B5/3932 ,  G01R33/09 ,  G01R33/096

    摘要： A magnetoresistive sensing apparatus is disclosed, comprising a magnetic film having a zig-zag shaped structure, a central axis, and a magnetization associated with the magnetic film, wherein the zig-zag shaped structure biases the magnetization direction alternately at positive and negative angles thereof, thereby permitting the magnetoresistive sensing apparatus to be sensitive to a magnetic field parallel to the axis of the magnetoresistive sensing apparatus and insensitive to magnetic fields perpendicular to the axis.

    摘要翻译： 公开了一种磁阻感测装置，其包括具有锯齿形结构，中心轴和与磁膜相关联的磁化的磁性膜，其中Z字形结构以其正角和负角交替地偏置磁化方向 从而允许磁阻感测装置对平行于磁阻感测装置的轴的磁场敏感，对垂直于轴的磁场不敏感。