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79 条记录 (耗时 0.04 秒)

    Nanoparticle production in liquid with multiple-pulse ultrafast laser ablation
    31.
    发明授权
    Nanoparticle production in liquid with multiple-pulse ultrafast laser ablation 有权
    多脉冲超快激光烧蚀液中纳米粒子生产

    公开(公告)号：US08858676B2

    公开(公告)日：2014-10-14

    申请号：US12951423

    申请日：2010-11-22

    申请人： Bing Liu ,  Zhendong Hu ,  Yong Che ,  Makoto Murakami

    发明人： Bing Liu ,  Zhendong Hu ,  Yong Che ,  Makoto Murakami

    IPC分类号： B22F9/14 ,  B01J19/12 ,  B22F9/04 ,  B22F1/00

    CPC分类号： B01J19/121 ,  B22F1/0018 ,  B22F9/04 ,  B22F2999/00 ,  Y10S977/889 ,  B22F2202/11

    摘要： A method for generating nanoparticles in a liquid comprises generating groups of ultrafast laser pulses, each pulse in a group having a pulse duration of from 10 femtoseconds to 200 picoseconds, and each group containing a plurality of pulses with a pulse separation of 1 to 100 nanoseconds and directing the groups of pulses at a target material in a liquid to ablate it. The multiple pulse group ablation produces nanoparticles with a reduced average size, a narrow size distribution, and improved production efficiency compared to prior pulsed ablation systems.

    摘要翻译： 用于在液体中产生纳米颗粒的方法包括产生超快激光脉冲组，组中的每个脉冲具有10飞秒至200皮秒的脉冲持续时间，并且每组包含脉冲间隔为1至100纳秒的多个脉冲 并将脉冲组定向在液体中的目标材料以烧蚀它。 与先前的脉冲消融系统相比，多脉冲组消融产生具有降低的平均尺寸，窄尺寸分布和提高的生产效率的纳米颗粒。

    Frequency spectrum analyzing apparatus
    32.
    发明授权
    Frequency spectrum analyzing apparatus 有权
    频谱分析装置

    公开(公告)号：US08725463B2

    公开(公告)日：2014-05-13

    申请号：US13120433

    申请日：2009-09-09

    申请人： Natsuko Kitamura ,  Yoshiaki Akimoto ,  Jiro Takagi ,  Atsushi Kurauchi ,  Masayuki Yoshiiri ,  Hirotaka Komatsu ,  Kazuhiko Hirota ,  Makoto Murakami

    发明人： Natsuko Kitamura ,  Yoshiaki Akimoto ,  Jiro Takagi ,  Atsushi Kurauchi ,  Masayuki Yoshiiri ,  Hirotaka Komatsu ,  Kazuhiko Hirota ,  Makoto Murakami

    IPC分类号： G01R23/16 ,  G06F17/00 ,  G06F19/00 ,  G01L23/22 ,  G05B15/00

    CPC分类号： G01R23/16 ,  G01L23/221 ,  G01L23/225 ,  G01M15/12 ,  G05B15/00 ,  G06F17/00 ,  G06F19/00

    摘要： A frequency spectrum analyzing apparatus for performing a frequency spectrum analysis with respect to a detected value of an operating parameter of an internal combustion engine in synchronism with rotation of the engine, is provided. The operating parameter is sampled at predetermined time intervals, and a sampled value is converted to a digital value. Intensities of first and second elements are calculated with respect to a predetermined number of the sampled values. The first elements and second elements respectively correspond to a plurality of frequency components contained in the detected value, and a phase of the second element differs from a phase of the first element by 90 degrees. Frequency component intensities corresponding to the plurality of frequency components are calculated in synchronism with rotation of the engine, using the first element intensities and the second element intensities. The frequency component intensities are calculated by replacing a part of an integrated value of the first element intensities, and a part of an integrated value of the second element intensities respectively with corresponding preceding calculated values, when an rotational speed of the engine is higher than or equal to a set threshold value.

    摘要翻译： 提供了一种频谱分析装置，用于与发动机的旋转同步地执行关于内燃机的操作参数的检测值的频谱分析。 以预定的时间间隔对操作参数进行采样，并将采样值转换为数字值。 相对于预定数量的采样值来计算第一和第二元素的强度。 第一元件和第二元件分别对应于包含在检测值中的多个频率分量，并且第二元件的相位与第一元件的相位不同90度。 使用第一元件强度和第二元件强度，与发动机的旋转同步地计算与多个频率分量对应的频率分量强度。 通过将发动机的转速高于或等于的第一元件强度的积分值的一部分和第二元件强度的积分值的一部分分别与相应的先前计算值相对应地计算频率分量强度， 等于设定的阈值。

    Positioning signal reception device and control method of positioning signal reception device
    34.
    发明授权
    Positioning signal reception device and control method of positioning signal reception device 有权

    公开(公告)号：US08619929B2

    公开(公告)日：2013-12-31

    申请号：US12574221

    申请日：2009-10-06

    申请人： Makoto Murakami

    发明人： Makoto Murakami

    IPC分类号： H04B1/10

    CPC分类号： H04B1/7097 ,  G01S19/21 ,  G01S19/30

    摘要： A positioning signal reception device receives a positioning signal transmitted from a position information satellite, and includes: a signal reception portion that obtains a reception signal by receiving the positioning signal; an A/D conversion portion that generates a digital signal by converting the reception signal into a digital form; a filter portion that subjects the digital signal to frequency separation, a characteristic of the filter portion being changeable; a filter characteristic change portion that changes the characteristic of the filter portion according to an operating state of the positioning signal reception device and an external environmental condition of the positioning signal reception device; and a code synchronization establishment portion that establishes synchronization of spreading codes contained in the reception signal.

    Multipath signal determination method, signal suitability determination method, positioning operation method, program, and multipath signal determination circuit
    36.
    发明授权
    Multipath signal determination method, signal suitability determination method, positioning operation method, program, and multipath signal determination circuit 有权
    多路径信号判定方法，信号适应性判定方法，定位运算方法，程序和多径信号判定电路

    公开(公告)号：US08300678B2

    公开(公告)日：2012-10-30

    申请号：US12326347

    申请日：2008-12-02

    申请人： Makoto Murakami

    发明人： Makoto Murakami

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7113 ,  G01S19/22 ,  G01S19/27 ,  G01S19/37 ,  H04B2201/70715

    摘要： A multipath signal determination method includes carrying out correlation operation between a received signal of a positioning signal spread-modulated with a spread code and a replica signal of the spread code with respect to each of IQ components at a predetermined sampling phase interval, and determining whether the received signal is a multipath signal or not, in accordance with a plot position in the case where each correlation value in each of the sampling phases is sequentially plotted on an IQ coordinate.

    摘要翻译： 多路径信号判定方法包括以预定的采样相位间隔对扩频码的扩频调制的接收信号和扩频码的复制信号进行相关运算，并确定是否 根据在每个采样相位中的每个相关值被顺序地绘制在IQ坐标上的情况下的绘图位置，所接收的信号是否为多径信号。

    COMPOSITE NANOPARTICLES AND METHODS FOR MAKING THE SAME
    37.
    发明申请
    COMPOSITE NANOPARTICLES AND METHODS FOR MAKING THE SAME 有权
    复合纳米粒子及其制备方法

    公开(公告)号：US20120168669A1

    公开(公告)日：2012-07-05

    申请号：US12983534

    申请日：2011-01-03

    申请人： Yong CHE ,  Makoto Murakami ,  Wei Guo

    发明人： Yong CHE ,  Makoto Murakami ,  Wei Guo

    IPC分类号： C04B35/00 ,  B29B9/02 ,  B32B5/16

    CPC分类号： C04B35/62695 ,  B22F1/0018 ,  B22F1/02 ,  B22F9/04 ,  B22F2999/00 ,  B82Y30/00 ,  C01G49/04 ,  C01G49/08 ,  C01P2004/04 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/80 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C09C1/62 ,  C22C29/00 ,  C22C32/00 ,  H01F1/0054 ,  Y10T428/2982 ,  Y10T428/2991 ,  B22F2202/11

    摘要： A composite nanoparticle, for example a nanoparticle containing one or a plurality of cores embedded in another material. A composite nanoparticle can be formed by a one step process that includes: ejecting material from a bulk target material using physical energy source, with the bulk target material disposed in a liquid. Composite nanoparticles are formed by cooling at least a portion of the ejected material in the liquid. The composite fine particles may then be collected from the liquid. A product that includes composite fine particles may be formed with laser ablation, and ultrashort laser ablation may be utilized so as to preserve composite nanoparticle stoichiometry. For applications of the composite fine particles, optical properties and/or magnetic properties may be exploited for various applications.

    摘要翻译： 复合纳米颗粒，例如含有嵌入另一材料中的一个或多个芯的纳米颗粒。 复合纳米颗粒可以通过一步法形成，该方法包括：使用物理能源从大量目标材料中喷射材料，其中大量目标材料设置在液体中。 复合纳米颗粒通过冷却至少一部分喷射的液体中的材料形成。 然后可以从液体中收集复合细颗粒。 可以通过激光烧蚀形成包括复合细颗粒的产品，并且可以利用超短激光烧蚀以保持复合纳米颗粒的化学计量。 对于复合细颗粒的应用，可以利用光学性质和/或磁性来进行各种应用。

    METHOD FOR FABRICATING THIN FILMS
    40.
    发明申请
    METHOD FOR FABRICATING THIN FILMS 审中-公开
    薄膜制作方法

    公开(公告)号：US20090246413A1

    公开(公告)日：2009-10-01

    申请号：US12254076

    申请日：2008-10-20

    申请人： Makoto Murakami ,  Zhendong Hu ,  Yong Che ,  Bing Liu

    发明人： Makoto Murakami ,  Zhendong Hu ,  Yong Che ,  Bing Liu

    IPC分类号： C23C14/30 ,  C23C16/54

    CPC分类号： C23C14/28 ,  C23C14/08 ,  C23C14/564 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/2308

    摘要： A method of ultrashort pulsed laser deposition (PLD) capable of continuously tuning formed-film morphology from that of a nanoparticle aggregate to a smooth thin film completely free of particles and droplets. The materials that can be synthesized using various embodiments of the invention include, but are not limited to, metals, alloys, metal oxides, and semiconductors. A ‘burst’ mode of ultrashort pulsed laser ablation and deposition is provided, where each ‘burst’ contains a train of laser pulses. Tuning of the film morphology is achieved by controlling the burst-mode parameters such as the number of pulses and the time-spacing between the pulses within each burst, the burst repetition rate, and the laser fluence. The system includes an ultrashort pulsed laser, an optical setup for delivering the laser beam such that the beam is focused onto the target surface with an appropriate average energy density (fluence), and a vacuum chamber in which the target and the substrate are installed and background gases and their pressures are appropriately adjusted.

    摘要翻译： 一种超短脉冲激光沉积（PLD）的方法，其能够将形成膜的形态从纳米颗粒聚集体的形态连续调节到完全没有颗粒和液滴的光滑薄膜。 可以使用本发明的各种实施方案合成的材料包括但不限于金属，合金，金属氧化物和半导体。 提供了超短脉冲激光烧蚀和沉积的“突发”模式，其中每个“脉冲串”包含一系列激光脉冲。 通过控制脉冲串模式参数，例如脉冲数和每个脉冲之间的脉冲之间的时间间隔，脉冲串重复频率和激光能量密度来实现电影形态的调整。 该系统包括超短脉冲激光器，用于传送激光束的光学装置，使得光束以适当的平均能量密度（能量密度）聚焦到目标表面上;以及真空室，其中安装有靶和基底; 背景气体及其压力得到适当调整。