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    Method and apparatus for performing SERS analysis using a chemical reference
    12.
    发明授权
    Method and apparatus for performing SERS analysis using a chemical reference 有权
    使用化学参考进行SERS分析的方法和装置

    公开(公告)号：US07312088B2

    公开(公告)日：2007-12-25

    申请号：US10902511

    申请日：2004-07-29

    Applicant: Stuart Farquharson

    Inventor： Stuart Farquharson

    IPC: G01N21/77

    CPC classification number: G01N21/658 ,  G01N21/278

    Abstract: Apparatus for use in effecting surface-enhanced Raman spectroscopy comprises first and second containment means, the first containment means containing a known quantity of a reference chemical having an effective surface-enhanced Raman factor, and the second containment means containing a surface-enhanced Raman-active medium and being sufficiently transparent, at least at one optical access location, to permit both the excitation irradiation of, and also the collection of surface-enhanced Raman scattered radiation from, a common field of view of the surface-enhanced Raman-active medium. The apparatus is constructed for carrying out the method of the invention; i.e., for effecting intimate mixing, substantially prior to introduction to the surface-enhanced Raman-active medium contained in the second containment means, of the reference chemical with an analyte chemical-containing solution introduced through an entrance into the first containment means. The homogeneous test solution so formed permeates the SER-active material in the second containment means, which is irradiated at the common field of view so as to produce SER scattered radiation for collection and quantitative analysis.

    Abstract translation: 用于实现表面增强拉曼光谱的装置包括第一和第二容纳装置，第一容纳装置含有已知量的具有有效表面增强拉曼因子的参考化学品，第二容纳装置含有表面增强拉曼光谱， 至少在一个光学接近位置处，至少在一个光学接近位置处具有足够的透明度，以允许来自表面增强拉曼活性介质的共同视野的激发照射和表面增强拉曼散射辐射的收集 。 该装置被构造用于实施本发明的方法; 即在进入第二容纳装置中的表面增强拉曼活性介质引入参考化学品之前，通过入口进入第一容纳装置，进行紧密混合。 如此形成的均匀试验溶液渗透到第二容纳装置中的SER活性物质，其在公共视野下照射，以产生用于收集和定量分析的SER散射辐射。

    Material for surface-enhanced Raman spectroscopy, and SER sensors and method for preparing same
    13.
    发明授权
    Material for surface-enhanced Raman spectroscopy, and SER sensors and method for preparing same 有权
    用于表面增强拉曼光谱的材料，以及SER传感器及其制备方法

    公开(公告)号：US06623977B1

    公开(公告)日：2003-09-23

    申请号：US09704818

    申请日：2000-11-02

    Applicant: Stuart Farquharson ,  Chad Nelson ,  Yuan-Hsiang Lee

    Inventor： Stuart Farquharson ,  Chad Nelson ,  Yuan-Hsiang Lee

    IPC: G01N2165

    CPC classification number: G01N21/658 ,  B82Y15/00 ,  G01N21/77

    Abstract: Metal-doped sol-gel materials, suitable for use as sensors for surface-enhanced Raman spectroscopic analysis for trace chemical detection, are produced by effecting gelation and solvent removal of a doped sol-gel under mild temperature conditions. At least in certain instances reaction and drying will desirably be effected in an oxygen-starved environment. The metal of the sol-gel material functions, when irradiated, to produce a plasmon field for interaction with molecules of an analyte in contact therewith, increasing by orders of magnitude Raman photons that are generate by excitation radiation, and the method allows matching of the metal and metal particle size to a wavelength of light (or incident radiation, e.g., laser radiation) to generate surface plasmons. The porosity of the sol-gel material dramatically increases the surface area, and thereby the amount of metal exposed for analyte interaction. The sensors provided may be in the form of glass vials, fiber optics, multi-well micro-sample plates, etc., having surface coatings of the doped sol-gel material, to provide sampling systems for use in a Raman instrument.

    Abstract translation: 适用于痕量化学检测的表面增强拉曼光谱分析传感器的金属掺杂溶胶凝胶材料是通过在温和的温度条件下进行掺杂溶胶 - 凝胶的凝胶化和溶剂去除来生产的。 至少在某些情况下，反应和干燥将理想地在缺氧环境中进行。 溶胶 - 凝胶材料的金属在被照射时起作用以产生与其分子的分子相互作用的等离子体场，增加通过激发辐射产生的拉曼光子数量级，并且该方法允许 金属和金属颗粒尺寸变为波长（或入射辐射，例如激光辐射））以产生表面等离子体激元。 溶胶 - 凝胶材料的孔隙率显着增加了表面积，从而显着地增加了暴露于分析物相互作用的金属的量。 提供的传感器可以是具有掺杂溶胶 - 凝胶材料的表面涂层的玻璃小瓶，光纤，多孔微样品板等的形式，以提供用于拉曼仪器的采样系统。

    Method of monitoring and controlling activity involving a fuel composition
    14.
    发明申请
    Method of monitoring and controlling activity involving a fuel composition 审中-公开
    监测和控制涉及燃料组成的活动的方法

    公开(公告)号：US20140229010A1

    公开(公告)日：2014-08-14

    申请号：US14120068

    申请日：2014-04-22

    Applicant: Stuart Farquharson ,  Wayne W. Smith

    Inventor： Stuart Farquharson ,  Wayne W. Smith

    IPC: G01N33/22

    CPC classification number: G01N33/22

    Abstract: The method and apparatus are used to determine class, grade and properties of fuel samples, regardless of ambient, instrument, or sample temperature, using mathematical correlations between fuel class, grade and properties and their spectra developed from a database of samples with measured properties and spectra. The ability to measure a fuel sample using the present method and apparatus is useful in identifying unknown fuel samples, determining suitability in equipment, and monitoring and controlling fuel processes, such as blending operations, distillation, and synthesis.

    Abstract translation: 该方法和设备用于确定燃料样品的等级，等级和性能，无论环境，仪器或样品温度如何，使用燃料类别，等级和性质之间的数学相关性以及从具有测量性质的样品数据库开发的光谱，以及 光谱。 使用本方法和装置测量燃料样品的能力可用于识别未知燃料样品，确定设备的适用性，以及监测和控制燃料过程，例如混合操作，蒸馏和合成。

    Analysis method effected with rapid analyte chemical separation and quick detection
    15.
    发明授权
    Analysis method effected with rapid analyte chemical separation and quick detection 有权
    快速分析化学分离快速检测分析方法

    公开(公告)号：US08012763B2

    公开(公告)日：2011-09-06

    申请号：US12322158

    申请日：2009-01-29

    Applicant: Chetan S. Shende ,  Stuart Farquharson ,  Paul Maksymiuk

    Inventor： Chetan S. Shende ,  Stuart Farquharson ,  Paul Maksymiuk

    IPC: G01N21/77

    CPC classification number: G01N30/74 ,  B01L3/0275 ,  G01N1/40 ,  G01N1/4044 ,  G01N21/658 ,  G01N30/6082 ,  G01N30/78 ,  G01N2030/746 ,  G01N21/63

    Abstract: A stationary medium is employed both to separate chemicals from a sample solution and also to generate surface-enhanced Raman scattering, so that spectral analysis of the separated analyte chemical can be performed. Applied driving force causes the sample to flow into the stationary medium and to distribute therethrough, thereby causing rapid separation of the analyte chemical, and surface-enhanced Raman scattered radiation is quickly detected, at a plurality of locations along a flow path defined by the stationary medium, for ultimate analysis.

    Abstract translation: 既采用固定介质将样品溶液中的化学物质分开，也可产生表面增强的拉曼散射，从而可以进行分离的分析物化学品的光谱分析。 施加的驱动力使得样品流入固定介质并分布在其中，从而导致分析物化学物质的快速分离，并且在沿着由静止物定义的流动路径的多个位置处快速检测到表面增强的拉曼散射辐射 中等，用于最终分析。

    Process control method for manufacturing polyolefin
    19.
    发明授权
    Process control method for manufacturing polyolefin 失效
    制造聚烯烃的工艺控制方法

    公开(公告)号：US5151474A

    公开(公告)日：1992-09-29

    申请号：US481020

    申请日：1990-02-16

    Applicant: Sandra V. Lange ,  David P. Denton ,  Joseph P. Weller ,  Jean P. Chauvel, Jr. ,  Stuart Farquharson ,  Harry D. Ruhl, Jr. ,  Gregory A. Winter

    Inventor： Sandra V. Lange ,  David P. Denton ,  Joseph P. Weller ,  Jean P. Chauvel, Jr. ,  Stuart Farquharson ,  Harry D. Ruhl, Jr. ,  Gregory A. Winter

    IPC: B01J19/00 ,  C08F2/06 ,  C08F10/00

    CPC classification number: B01J19/0006 ,  C08F10/00 ,  C08F2400/02

    Abstract: A process control method for controlling a polyolefin polymerization process, such as a solution polyethylene process, which includes five steps. The first step is to flow a stream of a solvent into a polyolefin reactor, such as flowing a stream of heptane solvent into the reactor at essentially a constant rate. The second step is to add a principal monomer to the stream of solvent, such as by adding ethylene at a controllable rate to the stream of solvent. The third step is to add a co-monomer to the stream of solvent, such as by adding 1-octene at a controllable rate to the stream of solvent. The fourth step is to determine the concentration of the principal monomer and the concentration of the co-monomer in the stream of solvent by high resolution multi-wavelength vibrational spectroscopy analysis, such as by Fourier transform infrared spectroscopy system having a spectral resolution of 4 wavenumbers which analyzes at 1909 wavenumbers for ethylene, at 1829 wavenumbers for 1-octene and at 2120 wavenumbers for a reference signal. The fifth step is to control the rate of addition of the principal monomer, the rate of addition of the comonomer or preferably the rate of addition of both the principal monomer and the co-monomer according to the determination of the fourth step to obtain the desired concentration of ethylene and 1-octene in the solvent so that, for example, the density of the polyolefin product can be controlled.

    Abstract translation: 用于控制聚烯烃聚合方法的过程控制方法，例如溶液聚乙烯方法，其包括五个步骤。 第一步是将溶剂流流入聚烯烃反应器中，例如以基本恒定的速率将庚烷溶剂流输入反应器。 第二步是将主要单体加入到溶剂流中，例如通过以可控速率向溶剂流中加入乙烯。 第三步是向溶剂流中加入共聚单体，例如通过以可控的速率向溶剂流中加入1-辛烯。 第四步是通过高分辨率多波长振动光谱分析来确定主要单体的浓度和溶剂流中共聚单体的浓度，例如通过具有4个波数的光谱分辨率的傅里叶变换红外光谱系统 其分析了1909年的乙烯波数，1829波数的1-辛烯和2120波数的参考信号。 第五步是根据第四步的测定来控制主要单体的加入速率，共聚单体的加入速率或优选加入主单体和共聚单体的速率以获得所需的 乙烯和1-辛烯在溶剂中的浓度使得例如可以控制聚烯烃产品的密度。

    Analysis method effected with rapid analyte chemical separation and quick detection
    20.
    发明申请
    Analysis method effected with rapid analyte chemical separation and quick detection 有权
    快速分析化学分离快速检测分析方法

    公开(公告)号：US20090168059A1

    公开(公告)日：2009-07-02

    申请号：US12322158

    申请日：2009-01-29

    Applicant: Stuart Farquharson ,  Paul Maksymiuk ,  Chetan S. Shende

    Inventor： Stuart Farquharson ,  Paul Maksymiuk ,  Chetan S. Shende

    IPC: G01J3/44 ,  G01N30/00

    CPC classification number: G01N30/74 ,  B01L3/0275 ,  G01N1/40 ,  G01N1/4044 ,  G01N21/658 ,  G01N30/6082 ,  G01N30/78 ,  G01N2030/746 ,  G01N21/63

    Abstract: A stationary medium is employed both to separate chemicals from a sample solution and also to generate surface-enhanced Raman scattering, so that spectral analysis of the separated analyte chemical can be performed. Applied driving force causes the sample to flow into the stationary medium and to distribute therethrough, thereby causing rapid separation of the analyte chemical, and surface-enhanced Raman scattered radiation is quickly detected, at a plurality of locations along a flow path defined by the stationary medium, for ultimate analysis.

    Abstract translation: 既采用固定介质将样品溶液中的化学物质分开，也可产生表面增强的拉曼散射，从而可以进行分离的分析物化学品的光谱分析。 施加的驱动力使得样品流入固定介质并分布在其中，从而导致分析物化学物质的快速分离，并且在沿着由静止物定义的流动路径的多个位置处快速检测到表面增强的拉曼散射辐射 中等，用于最终分析。

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