公开(公告)号：US20160223478A1

公开(公告)日：2016-08-04

申请号：US15022307

申请日：2014-09-25

申请人： WILLIAM MARSH RICE UNIVERSITY

发明人： Aydin Babakhani ,  Xuebei Yang

IPC分类号： G01N24/10 ,  G01V3/32 ,  E21B49/08

CPC分类号： G01N24/10 ,  E21B49/08 ,  E21B2049/085 ,  G01R33/3607 ,  G01R33/3621 ,  G01R33/381 ,  G01R33/448 ,  G01R33/60 ,  G01V3/26 ,  G01V3/32

摘要： An Electron Paramagnetic resonance (EPR) system and method allows the measurement paramagnetic characteristics of materials in real-time, such as heavy oil, hydrocarbons, asphaltenes, heptane, vanadium, resins, drilling fluid, mud, wax deposits or the like. The EPR systems and methods discussed herein are low cost, small and light weight, making them usable in flow-assurance or logging applications. The EPR sensor is capable of measuring paramagnetic properties of materials from a distance of several inches. In some embodiments, a window will be used to separate the EPR sensor from the materials in a pipeline or wellbore. Since the sensor does need to be in direct contact with the materials, it can operate at a lower temperature or pressure. In other embodiments, the EPR sensor may be placed in the materials.

摘要翻译： 电子顺磁共振（EPR）系统和方法允许实时测量物质的顺磁特性，如重油，碳氢化合物，沥青质，庚烷，钒，树脂，钻井液，泥浆，蜡沉积物等。 本文讨论的EPR系统和方法的成本低，重量轻，重量轻，可用于流量保证或测井应用。 EPR传感器能够从几英寸的距离测量材料的顺磁特性。 在一些实施例中，将使用窗口将EPR传感器与管道或井眼中的材料分开。 由于传感器确实需要与材料直接接触，所以它可以在较低的温度或压力下工作。 在其他实施例中，EPR传感器可以放置在材料中。

公开(公告)号：US20160161586A1

公开(公告)日：2016-06-09

申请号：US15012720

申请日：2016-02-01

申请人： The Trustees of Dartmouth College

发明人： Harold M. Swartz ,  Steven G. Swarts ,  Dmitriy Tipikin ,  Dean Wilcox ,  Xiaoming He ,  Thomas Matthews

IPC分类号： G01R33/60 ,  G01R33/30

CPC分类号： G01R33/60 ,  G01N24/10

摘要： A system and method are disclosed for post-exposure radiation biodosimetry on subjects using electron paramagnetic resonance (EPR) spectroscopy of nail clippings from the subjects. Basis spectra averaged from a plurality of nail clipping measurements are used to spectrally decompose an EPR-measured signal and identify a radiation-induced signal (RIS). The RIS is used to determine an exposure dose from a standard curve. A collection apparatus provides for harvesting and storing nail clippings in a dry, oxygen-reduced, environment to prevent sample degradation. The collection apparatus includes a container with an atmosphere isolated from external atmosphere and a sample bag impermeable to oxygen and water vapor. The sample bag includes an oxygen absorber and a desiccant for storing nail clippings with minimal exposure to oxygen and water vapor, thereby retaining a stable EPR signal.

摘要翻译： 公开了用于使用受试者的指甲剪的电子顺磁共振（EPR）光谱的受试者的曝光后辐射生物测定法的系统和方法。 使用从多个指甲剪切测量值平均的基础光谱来对EPR测量的信号进行光谱分解并识别辐射诱导信号（RIS）。 RIS用于从标准曲线确定暴露剂量。 收集装置用于在干燥，减氧的环境中采集和存储指甲剪以防止样品降解。 收集装置包括具有与外部气氛隔离的气氛的容器和不透氧和水蒸汽的样品袋。 样品袋包括氧吸收剂和用于存储指甲剪的干燥剂，其最少暴露于氧气和水蒸气，从而保持稳定的EPR信号。

公开(公告)号：US20160161429A1

公开(公告)日：2016-06-09

申请号：US14227076

申请日：2014-03-27

申请人： THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK

发明人： Dirk R. Englund ,  Edward H. Chen ,  Ophir Gaathon

IPC分类号： G01N24/00 ,  G01N21/64

CPC分类号： G01N24/006 ,  G01N21/6402 ,  G01N21/6458 ,  G01N24/10 ,  G01R33/323

摘要： Techniques for deterministic switch microscopy include resolving at least one nitrogen vacancy center in a diamond structure. A magnetic field can be applied across the diamond structure and the nitrogen vacancy centers can be optically excited. The nitrogen vacancy centers can be switched from a dark state to a bright state or a bright state by a dark state by applying at least one microwave pulse. A fluorescent response of each nitrogen vacancy center can be detected and a nitrogen vacancy center can be resolved based on the fluorescent response of each nitrogen vacancy center as it corresponds to the orientation of the nitrogen vacancy center relative to the applied magnetic field.

摘要翻译： 用于确定性切换显微术的技术包括在金刚石结构中拆分至少一个氮空位中心。 可以在金刚石结构之间施加磁场，并且氮空位中心可以被光学激发。 通过施加至少一个微波脉冲，氮空位中心可以从黑暗状态切换到明亮状态或暗态的明亮状态。 可以检测每个氮空位中心的荧光响应，并且可以基于每个氮空位中心的荧光响应来解析氮空位中心，因为其对应于氮空位中心相对于所施加的磁场的取向。

公开(公告)号：US09362600B2

公开(公告)日：2016-06-07

申请号：US14023468

申请日：2013-09-11

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

发明人： Abdel-Nasser Metwally Aly Kawde ,  Mohamed Aly Morsy

IPC分类号： H01M14/00 ,  G01N27/403 ,  G01N27/416 ,  G01N24/10 ,  G01R33/30

CPC分类号： H01M14/00 ,  G01N24/10 ,  G01N27/403 ,  G01N27/416 ,  G01R33/30 ,  Y10T29/4911

摘要： A cell and method for simultaneous electrochemical and EPR measurements, including a disposable assembly, allows for a single device to produce data for both electroanalysis and EPR spectroscopy by generating a Redox reaction to form free radicals. The cell includes first and second hollow tubes, with the second tube being removably insertable into the first hollow tube. The interior of the first tube contains an insulating material, an electro-conductive material, and a wire connector extending from the electro-conductive material and out the first tube. The interior of the second tube contains an electrolytic solution, an analyte, a working electrode, and insulating material surrounding the working electrode. The second tube is inserted into the first tube and a reference electrode is placed into the second tube. The cell is placed within an EPR spectrometer. A potential is applied to the reference electrode to generate the Redox reaction of the analyte.

摘要翻译： 用于同时电化学和EPR测量的电池和方法，包括一次性组件，允许单个装置通过产生氧化还原反应以形成自由基来产生电分析和EPR光谱的数据。 电池包括第一和第二中空管，第二管可拆卸地插入第一中空管中。 第一管的内部包含绝缘材料，导电材料和从导电材料延伸出第一管的线连接器。 第二管的内部包含电解液，分析物，工作电极和围绕工作电极的绝缘材料。 将第二管插入第一管中，将参考电极放置在第二管中。 将该电池置于EPR光谱仪内。 对参比电极施加电位以产生分析物的氧化还原反应。

公开(公告)号：US20160131575A1

公开(公告)日：2016-05-12

申请号：US14897751

申请日：2013-06-18

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： Endre BREKKE ,  Dmitry DOLGOPYATOV ,  Sandra Silke JANY ,  Vitaly MALININ ,  Ivan NIKOLIN

IPC分类号： G01N21/31 ,  G01N24/10 ,  G01N33/28

CPC分类号： G01N21/31 ,  G01N24/10 ,  G01N33/28 ,  G01N33/2847 ,  G01N33/2876

摘要： A method and system for monitoring the quality of fluids, wherein comprising the different features of a fluid with at least two different methods are measured and a measure for the quality of the fluid is derived and/or a process of the fluid deterioration is identified by comparing the results of the measurements of the at least two different methods, where the methods includes at least one optical absorption measurement and at least one electron paramagnetic resonance measurement.

摘要翻译： 测量用于监测流体质量的方法和系统，其中包括具有至少两种不同方法的流体的不同特征，并且导出流体质量的量度，和/或流体劣化的过程通过 比较所述至少两种不同方法的测量结果，其中所述方法包括至少一种光吸收测量和至少一种电子顺磁共振测量。

公开(公告)号：US20150212168A1

公开(公告)日：2015-07-30

申请号：US14611135

申请日：2015-01-30

申请人： Vishal Shah ,  Kenneth Jeramiah Hughes

发明人： Vishal Shah ,  Kenneth Jeramiah Hughes

IPC分类号： G01R33/26

CPC分类号： G01R33/26 ,  G01N24/006 ,  G01N24/10

摘要： A zero-field paramagnetic resonance magnetometer (ZF-PRM) system and method for quickly and efficiently finding and optimizing the zero-field (ZF) resonance is described. In this system and method a magnetic coil is used to apply a magnetic bias field in the direction of the pump beam to artificially broaden the width and maximize the strength of the ZF resonance. By making the ZF resonance easy to detect, the ZF resonance may be found quickly found without the use of additional components and complex algorithms. Once the ZF resonance is found, a compensating magnetic field can be applied to null the magnetic field in the vicinity of the vapor cell in the ZF-PRM, thereby initializing it for operation.

摘要翻译： 描述了用于快速有效地找到和优化零场（ZF）共振的零场顺磁共振磁强计（ZF-PRM）系统和方法。 在该系统和方法中，使用磁线圈在泵浦光束的方向上施加磁偏置场，以人为地扩大宽度并使ZF共振的强度最大化。 通过使ZF共振容易检测，可以快速发现ZF共振，而不需要使用附加组件和复杂算法。 一旦找到ZF共振，就可以施加补偿磁场来使ZF-PRM中的蒸气室附近的磁场失效，从而初始化它。

公开(公告)号：US08766630B2

公开(公告)日：2014-07-01

申请号：US13127317

申请日：2009-11-04

申请人： Lloyd Hollenberg ,  Jared Cole

发明人： Lloyd Hollenberg ,  Jared Cole

IPC分类号： G01R33/20 ,  G01R33/32 ,  G01Q70/14 ,  G01N24/10 ,  G01Q60/00 ,  B82Y15/00 ,  B82Y35/00

CPC分类号： G01Q70/14 ,  B82Y15/00 ,  B82Y35/00 ,  G01N24/10 ,  G01Q60/00 ,  G01Q60/42 ,  G01R33/326

摘要： The present disclosure provides a method of monitoring a property of a sample, such as a nanoscopic property of the sample. The method comprises the steps of providing a quantum probe having a quantum state and exposing the quantum probe to the sample in a manner such that the property of the sample, in the proximity of the quantum probe, affects quantum coherence of the quantum probe. The method also comprises detecting a rate of quantum decoherence of the quantum probe to monitor the property of the sample. Further the present disclosure provides an apparatus for monitoring a property of a sample.

摘要翻译： 本公开提供了监测样品的性质的方法，例如样品的纳米尺度特性。 该方法包括以下步骤：提供具有量子态的量子探针，并以量子探针附近的样品的性质影响量子探针的量子相干性的方式将量子探针暴露于样品。 该方法还包括检测量子探针的量子去相干率以监测样品的性质。 此外，本公开提供了一种用于监测样品的性质的装置。

公开(公告)号：US08648596B2

公开(公告)日：2014-02-11

申请号：US12906822

申请日：2010-10-18

申请人： Colin T. Elliott ,  Christopher John White ,  James R. White

发明人： Colin T. Elliott ,  Christopher John White ,  James R. White

IPC分类号： G01V3/00

CPC分类号： F01N11/00 ,  G01N24/08 ,  G01N24/10 ,  G01R33/345 ,  G01R33/60

摘要： Described is an electron spin resonance (ESR) spectrometer comprising a miniaturized radio-frequency (RF) microwave cavity resonator. The miniaturized RF microwave cavity resonator receives a carrier signal from a circulator, modulates the signal path signal, and reflects the carrier signal back to the circulator to amplify the carrier signal prior to demodulation. A mixer receives and demodulates the carrier signal and outputs an audio signal to generate an ESR spectrum for analyzing a chemical composition of a fluid sample. The ESR spectrum represents a magnetic susceptibility of the fluid sample to a magnetic resonance cause variation in a resonant frequency of the miniaturized RF microwave cavity resonator. In a desired aspect, the carrier signal is split into two paths prior to demodulation. The two paths are demodulated by different mixers to produce two separate outputs, an absorption spectrum and a dispersion spectrum.

摘要翻译： 描述了包括微型射频（RF）微波腔谐振器的电子自旋共振（ESR）光谱仪。 微型RF微波谐振腔谐振器从环行器接收载波信号，调制信号路径信号，并将载波信号反馈回循环器，以在解调之前放大载波信号。 混频器接收和解调载波信号并输出​​音频信号以产生用于分析流体样品的化学成分的ESR频谱。 ESR光谱表示流体样品对磁共振的磁化率导致小型化RF微波腔谐振器的谐振频率的变化。 在期望的方面，载波信号在解调之前被分成两个路径。 两个路径由不同的混频器解调，以产生两个单独的输出，吸收光谱和色散谱。

公开(公告)号：US08610434B2

公开(公告)日：2013-12-17

申请号：US13188270

申请日：2011-07-21

申请人： Arthur H. Heiss ,  Ajay Khatri

发明人： Arthur H. Heiss ,  Ajay Khatri

IPC分类号： G01V3/00

CPC分类号： F25B9/02 ,  F25B25/00 ,  G01N24/10 ,  G01R33/31 ,  G01R33/38 ,  G01R33/3806 ,  G01R33/60

摘要： In an electron paramagnetic resonance spectrometer, a closed cycle cryocooler is used to cool gaseous helium, which is then circulated around a sample to cool the sample by direct convection. Since the sample is not mechanically connected to the refrigerator, no vibrations are transmitted from the refrigerator to the sample and the sample can be quickly removed and replaced. The cooled helium can be passed through a Joule-Thomson expansion device before circulating the cooled helium around the sample to further cool the helium. In addition, a vacuum pump can be connected to the helium outlet after circulating the cooled helium around the sample to increase the pressure differential across the Joule-Thomson expansion device and further cool the helium. In order to raise the temperature of the cooled helium, a heater can be placed about the cooled helium line upstream from the sample.

摘要翻译： 在电子顺磁共振光谱仪中，使用封闭循环的低温冷却器来冷却气态氦气，然后将其循环在样品周围，通过直接对流冷却样品。 由于样品没有机械地连接到冰箱，所以没有振动从冰箱传输到样品，并且可以快速地取出和更换样品。 冷却的氦气可以通过焦耳 - 汤姆逊膨胀装置，然后将冷却的氦气循环到样品周围，以进一步冷却氦气。 此外，在将冷却的氦气循环到样品周围之后，真空泵可以连接到氦出口，以增加焦耳 - 汤姆森膨胀装置的压差，并进一步冷却氦气。 为了提高冷氦的温度，可以在样品上游的冷却氦管线周围放置加热器。

公开(公告)号：US08547090B2

公开(公告)日：2013-10-01

申请号：US12746128

申请日：2008-12-03

申请人： Mikhail D. Lukin ,  Ronald L. Walsworth ,  Amir Yacoby ,  Paola Cappellaro ,  Jacob M. Taylor ,  Liang Jiang ,  Lilian Childress

发明人： Mikhail D. Lukin ,  Ronald L. Walsworth ,  Amir Yacoby ,  Paola Cappellaro ,  Jacob M. Taylor ,  Liang Jiang ,  Lilian Childress

IPC分类号： G01R33/02

CPC分类号： G01R33/032 ,  G01N24/10 ,  G01R33/1284 ,  G01R33/24 ,  G01R33/60

摘要： A method is disclosed for increasing the sensitivity of a solid state electronic spin based magnetometer that makes use of individual electronic spins or ensembles of electronic spins in a solid-state lattice, for example NV centers in a diamond lattice. The electronic spins may be configured to undergo a Zeeman shift in energy level when photons of light are applied to the electronic spins followed by pulses of an RF field that is substantially transverse to the magnetic field being detected. The method may include coherently controlling the electronic spins by applying to the electronic spins a sequence of RF pulses that dynamically decouple the electronic spins from mutual spin-spin interactions and from interactions with the lattice. The sequence of RF pulses may be a Hahn spin-echo sequence, a Can Purcell Meiboom Gill sequence, or a MREV8 pulse sequence, by way of example.

摘要翻译： 公开了一种用于增加固体电子自旋基磁力计的灵敏度的方法，其使用电子自旋或电子自旋的集合在固态晶格中，例如金刚石晶格中的NV中心。 当光子被施加到电子自旋上时，电子自旋可被配置为在能量水平上经历塞曼移动，随后是基本上横向于被检测的磁场的RF场的脉冲。 该方法可以包括通过向电子自旋施加一系列RF脉冲来相干地控制电子自旋，该序列使电子自旋与相互自旋 - 自旋相互作用和与晶格的相互作用动态地分离。 作为示例，RF脉冲的序列可以是Hahn自旋回波序列，Can Purcell Meiboom Gill序列或MREV8脉冲序列。