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    • 1. 发明申请
    • Optical Measuring Device and Method, and Nanoparticle Measuring Method and Device
    • 光学测量装置及方法及纳米粒子测量方法及装置
    • US20080192252A1
    • 2008-08-14
    • US11661492
    • 2005-07-15
    • Naoji MoriyaShinichiro TotokiYuzo NagumoYukihisa WadaNaofumi SakauchiFujio InoueMasahiro TakebeMakiko Masutomi
    • Naoji MoriyaShinichiro TotokiYuzo NagumoYukihisa WadaNaofumi SakauchiFujio InoueMasahiro TakebeMakiko Masutomi
    • G01N21/00
    • G01N21/4788G01N15/0211G01N15/0227G01N2013/003G01N2015/0038G01N2015/0294
    • The invention provides an optical measuring device capable of performing measuring using a transient diffraction grating by only adjusting probe light, and a nanoparticle measuring device using the same principle as the optical measuring device. An optical measuring device includes: a power supply 15; a container 11 that stores a sample; a pair of electrodes 13 and 14 that generate an electric force line distribution in which areas having high electric force line density and areas having low electric force line density are regularly arranged; a dielectrophoresis control unit 19 that controls the generation of a transient diffraction grating using dielectrophoresis of particles in the sample caused by applying the voltage to the pair of electrodes 13 and 14 and a variation in the transient diffraction grating due to the diffusion of the particles in the sample according to a variation in the applied voltage; a light source 16 emitting light to the transient diffraction grating; and a plurality of photodetectors 18 detecting diffracted light generated by the transient diffraction grating. In the optical measuring device, the particles are evaluated on the basis of a variation in the intensity of the diffracted light generated by the transient diffraction grating. Further, for example, the particle diameter of a nanoparticle is measured by the same principle as the optical measuring device uses. As a result, it is possible to increase the intensity of a signal and to improve the sensitivity and the S/N ratio, as compared to a dynamic scattering method.
    • 本发明提供一种光学测量装置,该光学测量装置能够仅通过调节探测光来进行使用瞬态衍射光栅的测量,以及使用与光学测量装置相同原理的纳米粒子测量装置。 光学测量装置包括:电源15; 存储样品的容器11; 产生电力线分布的一对电极13,14,其中规定排列具有高电力线密度的区域和具有低电力线密度的区域; 介电电泳控制单元19,其使用通过向一对电极13和14施加电压引起的样品中的颗粒的介电电泳,以及由于颗粒的扩散引起的瞬态衍射光栅的变化来控制瞬态衍射光栅的产生 样品根据施加电压的变化; 将光发射到瞬态衍射光栅的光源16; 以及检测由瞬变衍射光栅产生的衍射光的多个光检测器18。 在光学测量装置中,基于由瞬变衍射光栅产生的衍射光的强度的变化来评估颗粒。 此外,例如,通过与光学测量装置使用的原理相同的原理来测量纳米颗粒的粒径。 结果,与动态散射方法相比,可以增加信号的强度并提高灵敏度和S / N比。
    • 2. 发明申请
    • OPTICAL MEASURING DEVICE
    • 光学测量装置
    • US20090251695A1
    • 2009-10-08
    • US11996057
    • 2006-01-17
    • Naoji MoriyaYuzo NagumoYukihisa WadaNaofumi SakauchiFujio InoueMasahiro TakebeKenji TakuboShinichiro Totoki
    • Naoji MoriyaYuzo NagumoYukihisa WadaNaofumi SakauchiFujio InoueMasahiro TakebeKenji TakuboShinichiro Totoki
    • G01N15/02G01N21/47
    • G01N15/0211G01N21/4788G01N2021/1721
    • Within a container 1 which is storing a sample is generated a regularly arranged electric field distribution by an impression of a voltage upon an electrode pair 2 provided within the container 1, thereby generating diffraction grating formed by a density modulation of particles within the sample within the container 1, there is obtained information upon a diffusion of the particles based upon a temporal change in an extinction process of an intensity of a diffracted light beam obtained by irradiating a light beam upon the diffraction grating formed by the density modulation of the particles, the electrodes 21, 22 constituting the electrode pair 2 are configured to have multiple linear electrode teeth 21a, 22a parallel with each other, the electrodes 21, 22 are arranged such that the electrode teeth 21a of one electrode 21 are inserted between the electrode teeth 22a of the other electrode 22, thereby increasing the width of the diffraction grating formed by the density modulation of the particles, and a ratio of a component of the diffracted light beam thereof included in an entire diffracted light beam is increased to increase sensitivity of a measurement. As a result, there is provided an optical measuring device which can measure the information upon the diffusion of the particles movably dispersed within a medium at a high sensitivity and with an excellent S/N ratio.
    • 在存储样品的容器1内通过设置在容器1内的电极对2上的电压印制产生规则排列的电场分布,从而产生通过在样品内的颗粒的密度调制形成的衍射光栅 容器1根据粒子的密度调制形成的衍射光栅照射光束而获得的衍射光束的强度的消光处理中的时间变化,获得了粒子扩散的信息, 构成电极对2的电极21,22被配置为具有彼此平行的多个线状电极齿21a,22a,电极21,22被布置成使得一个电极21的电极齿21a插入到电极齿22a 另一个电极22,从而增加由t的密度调制形成的衍射光栅的宽度 并且包括在整个衍射光束中的衍射光束的分量的比率增加,以增加测量的灵敏度。 结果,提供了一种光学测量装置,其可以以高灵敏度和良好的S / N比来测量可移动地分散在介质中的颗粒的扩散的信息。
    • 3. 发明授权
    • Optical measuring device
    • 光学测量装置
    • US07911610B2
    • 2011-03-22
    • US11996057
    • 2006-01-17
    • Naoji MoriyaYuzo NagumoYukihisa WadaNaofumi SakauchiFujio InoueMasahiro TakebeKenji TakuboShinichiro Totoki
    • Naoji MoriyaYuzo NagumoYukihisa WadaNaofumi SakauchiFujio InoueMasahiro TakebeKenji TakuboShinichiro Totoki
    • G01N21/00
    • G01N15/0211G01N21/4788G01N2021/1721
    • The present invention relates to an optical measuring device which includes container for storing a sample, and an electrode pair for generating an electric field distribution upon impression of a voltage by an electrical power supply, thereby generating or extinguishing diffraction grating formed by a density modulation of particles within the sample. The particles within the sample are evaluated based upon a temporal change of an intensity of a diffracted light beam obtained by irradiating a light beam upon the diffraction grating formed by the density modulation of the particles. The electrodes constituting the electrode pair are configured to have a comb-like electrode teeth that are parallel with each other and are arranged such that the electrode teeth of one electrode are inserted between the electrode teeth of the other electrode. From such configuration, an optical measuring device of a high sensitivity and excellent S/N ratio can be obtained.
    • 本发明涉及一种光学测量装置,该光学测量装置包括用于存储样品的容器和用于通过电源印制电压而产生电场分布的电极对,由此产生或熄灭由密度调制形成的衍射光栅 样品内的颗粒。 基于通过对通过颗粒的密度调制形成的衍射光栅照射光束而获得的衍射光束的强度的时间变化来评估样品内的颗粒。 构成电极对的电极被构造为具有彼此平行的梳状电极齿,并且被布置成使得一个电极的电极齿插入另一个电极的电极齿之间。 由此,可以得到灵敏度高,S / N比优异的光学测量装置。
    • 6. 发明申请
    • Particle size analyzer
    • 粒度分析仪
    • US20050083524A1
    • 2005-04-21
    • US10949190
    • 2004-09-27
    • Shinichiro Totoki
    • Shinichiro Totoki
    • G01N15/02G01N21/00
    • G01N15/0205G01N15/0211G01N21/6428
    • A laser diffraction particle size analyzer irradiates a laser beam on particles in a scattered state, and measures a spatial intensity distribution of diffracted and scattered light from the particles. A particle size distribution of the particles is calculated from a result of the measurement. The laser diffraction particle size analyzer includes a laser device for generating an ultraviolet laser beam as a light source for generating a laser beam, and a fluorescent member closely attached to or disposed adjacent to a detecting surface of a photodiode array that measures the spatial intensity distribution of the diffracted and scattered light upon incidence thereof.
    • 激光衍射粒度分析仪将激光束照射在散射状态的粒子上,测定来自粒子的衍射光和散射光的空间强度分布。 从测量结果计算颗粒的粒度分布。 激光衍射粒度分析仪包括用于产生作为产生激光束的光源的紫外激光束的激光装置和紧密附着或邻近测量空间强度分布的光电二极管阵列的检测表面附近的荧光部件 的衍射和散射光。
    • 10. 发明授权
    • Collecting device for suspended particles
    • 收集悬浮颗粒物
    • US06881246B2
    • 2005-04-19
    • US10405355
    • 2003-04-03
    • Shinichiro Totoki
    • Shinichiro Totoki
    • G01N15/02B03C3/011B03C3/02B03C3/09B03C3/155B03C3/36G01N1/02B03C3/34
    • B03C3/36B03C3/011B03C3/025B03C3/09B03C3/155
    • A collecting device for collecting suspended particles includes a mobility analysis device; a collecting container connected to an outlet of the mobility analysis device; a discharge electrode disposed inside the collecting container for charging the particles inside the collecting container by generating single polar ions; and a collecting electrode for collecting the charged particles inside the collecting container by an electric potential difference relative to the discharge electrode. In the mobility analysis device, the particles are charged and guided into a flow path. An electric field is created in the flow path, and the particles are guided into the path perpendicular to the electric field. Since a mobility of a particle in an electric field depends on a size of the particle, the particles guided in the path are separated according to the electric field, thereby obtaining particles with sizes in a specific range.
    • 用于收集悬浮颗粒的收集装置包括移动性分析装置; 连接到移动性分析装置的出口的收集容器; 放电电极,设置在收集容器内部,用于通过产生单极性离子来对收集容器内的颗粒进行充电; 以及收集电极,用于通过相对于放电电极的电位差来收集收集容器内的带电粒子。 在移动性分析装置中,将颗粒充电并引导到流路中。 在流路中产生电场,并且将粒子引导到垂直于电场的路径中。 由于电场中的粒子的迁移率取决于粒子的尺寸,所以在路径中引导的粒子根据电场分离,从而获得尺寸在特定范围内的粒子。