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    • 3. 发明申请
    • Methods For Preparing Aqueous Suspension Of Precious Metal Nanoparticles
    • 制备贵金属纳米粒子水悬浮液的方法
    • US20140213807A1
    • 2014-07-31
    • US14161773
    • 2014-01-23
    • Yuki IchikawaAndrius MarcinkevicusMasayuki ItoWei Qian
    • Yuki IchikawaAndrius MarcinkevicusMasayuki ItoWei Qian
    • C08G65/328B82Y30/00
    • C08G65/328B01J13/0043B82Y30/00
    • The present disclosure is directed to methods of preparing stable suspensions of precious metal nanoparticles and methods for attaching bio-molecules to the nanoparticles. The formation of nanoparticles can be accomplished by either chemical synthesis or pulsed laser ablation in a liquid. The present disclosure reveals the importance of controlling the conductivity of the dispersion medium during pulsed laser ablation in a liquid to control the particle size of the nanoparticles. The present disclosure also reveals the importance of adjusting and maintaining the conductivity in a range of 25 μS/cm or less during storage of the nanoparticles and just prior to performing bioconjugation reactions. The control of conductivity is an important process for maintaining the nanoparticles as a stable non-aggregated colloidal suspension in a dispersion medium.
    • 本公开涉及制备贵金属纳米颗粒的稳定悬浮液的方法和将生物分子附着到纳米颗粒的方法。 纳米颗粒的形成可以通过液体中的化学合成或脉冲激光烧蚀来实现。 本公开揭示了在液体中的脉冲激光烧蚀期间控制分散介质的电导率以控制纳米颗粒的粒度的重要性。 本公开还揭示了在纳米颗粒储存期间和刚好在进行生物共轭反应之前调节和保持电导率在25μS/ cm以下范围内的重要性。 导电性的控制是将纳米颗粒保持在分散介质中作为稳定的非聚集胶体悬浮液的重要方法。
    • 4. 发明申请
    • Stable Colloidal Suspensions Of Gold Nanoconjugates And The Method For Preparing The Same
    • 金纳米结晶的稳定胶体悬浮液及其制备方法
    • US20130189793A1
    • 2013-07-25
    • US13744633
    • 2013-01-18
    • Wei QianYong Che
    • Wei QianYong Che
    • G01N21/64
    • G01N21/64A61K47/6923B01J13/0034B01J13/0043B82Y30/00G01N21/554
    • In the present invention, a method for determining the stability threshold amount of a stabilizer component for gold nanoparticles to prevent their aggregation in any electrolyte solution, is disclosed. The method permits for very low levels of stabilizer components to be used while still permitting conjugation with other functional ligands. The method comprises preparation of stable gold nanoparticles conjugated with different amount of stabilizing agents in deionized water first and then testing the stability of colloidal suspension of these gold nanoparticles in the presence of the electrolyte solution by monitoring the absorbance at 520 nm. The invention also comprises a method for fabrication of nanoconjugates comprising gold nanoparticles and only the stabilizer components or comprising gold nanoparticles, stabilizer components and functional ligands, which are stable in the presence of electrolytes.
    • 在本发明中,公开了一种用于确定金纳米颗粒的稳定剂组分以防止其在任何电解质溶液中聚集的稳定剂阈值量的方法。 该方法允许使用非常低水平的稳定剂组分,同时仍允许与其它官能配体缀合。 该方法首先制备在去离子水中与不同量的稳定剂缀合的稳定金纳米颗粒,然后通过监测520nm处的吸光度,测定这些金纳米粒子在电解质溶液存在下的胶体悬浮液的稳定性。 本发明还包括一种制造纳米缀合物的方法,其包括金纳米颗粒并且仅包含稳定剂组分或包含在电解质存在下稳定的金纳米颗粒,稳定剂组分和官能配体。
    • 8. 发明申请
    • Application of electrical field power to light-transmitting medium
    • 电场功率应用于透光介质
    • US20130020664A1
    • 2013-01-24
    • US13136828
    • 2011-08-10
    • Wei QianDazeng FengJoan FongMehdi Asghari
    • Wei QianDazeng FengJoan FongMehdi Asghari
    • H01L31/0232H01L31/18
    • G02B6/12004G02B6/131G02B2006/12061G02B2006/12176
    • A device includes an input waveguide on a base. The input waveguide guides a light signal through a light-transmitting medium to a light sensor. The light sensor includes a sensor waveguide on the base. The device also includes a sensor waveguide on the base. The sensor waveguide includes a light-absorbing medium that receives the light signal from the input waveguide. The light-absorbing medium has one or more continuous doped regions that are each positioned such that an application of electrical energy to the doped regions forms an electrical field in the light-absorbing medium. One or more of the doped regions has a first portion that is located within the light-absorbing medium and a second portion located outside of the light-absorbing medium. The device also includes an electrical conductor for applying the electrical energy to one of the doped regions. The electrical conductor contacts the portion of the doped regions that is located outside of the light-absorbing medium.
    • 装置包括在基座上的输入波导。 输入波导通过光传输介质将光信号引导到光传感器。 光传感器包括在基座上的传感器波导。 该装置还包括在基座上的传感器波导。 传感器波导包括从输入波导接收光信号的光吸收介质。 光吸收介质具有一个或多个连续掺杂区域,每个连续掺杂区域被定位成使得向掺杂区域施加电能在光吸收介质中形成电场。 一个或多个掺杂区域具有位于光吸收介质内的第一部分和位于光吸收介质外部的第二部分。 该装置还包括用于将电能施加到一个掺杂区域的电导体。 电导体接触位于光吸收介质外部的掺杂区域的部分。
    • 9. 发明申请
    • Rotating Machinery Condition Monitoring Using Position Sensor
    • 使用位置传感器进行旋转机械状态监测
    • US20120126738A1
    • 2012-05-24
    • US12948951
    • 2010-11-18
    • Linglai LiWei QianThomas D. Lundell
    • Linglai LiWei QianThomas D. Lundell
    • H02K11/00
    • H02P29/0241
    • Continuous monitoring and fault diagnosis of rotating machinery during variable speed operation is performed using only a position feedback signal. The position sensor generates a periodic waveform having multiple pulses per revolution of the machine. A circuit is included to detect, for example, a zero crossing or edge of the periodic waveform. At each detected zero crossing or edge, the time and position of the event is stored in memory. Other data, such as the current in the motor, may also be sampled and stored in memory. Because the sampled data is triggered by repeated feature of the position feedback signal, the sampled data is in a stationary reference frame in the position domain. Frequency analysis is performed on the sampled data, and the frequency components present in either the sampled signal are analyzed to identify the presence of a fault in the rotating machinery.
    • 只能使用位置反馈信号,进行变速运转时旋转机械的连续监控和故障诊断。 位置传感器产生每单位具有多个脉冲的周期性波形。 包括电路以检测例如周期性波形的过零或边缘。 在每个检测到的零交叉或边缘,事件的时间和位置存储在存储器中。 其他数据,例如电动机中的电流也可以被采样并存储在存储器中。 由于采样数据由位置反馈信号的重复特征触发,采样数据位于位置域中的静止参考帧。 对采样数据进行频率分析,并分析存在于采样信号中的频率分量,以识别旋转机械中故障的存在。