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    • 31. 发明申请
    • Carbon particle fiber assembly technique
    • 碳粒子纤维装配技术
    • US20050189671A1
    • 2005-09-01
    • US10789154
    • 2004-02-27
    • Dennis GreywallBernard Yurke
    • Dennis GreywallBernard Yurke
    • D01F6/52D01F9/12B29C35/08D02G1/02
    • D01F9/12B82Y30/00D01F6/52
    • Carbon particles, such as, carbon fibrils and carbon nanotube molecules, may be assembled into substantially pure aligned fibers by a) dispersing the carbon particles within a curable liquid, b) aligning the carbon particles by flowing the mixture of curable liquid and carbon particles down a tapering tube, and c) curing the flowing mixture of curable liquid and carbon particles in the general vicinity of the end of the tapering tube to form a fiber. The curable liquid may be cured using ultraviolet light. The solidified mixture may be further processed by d) heating the fiber so as to cause the volatile elements of the solidified curable liquid portion to substantially dissipate from the fiber, e) twisting the fiber to increase its density, f) heating the fiber to sinter the carbon particles within the fiber, and g) cladding the fiber. The resulting fiber may then be spooled onto a take-up drum.
    • 碳颗粒,例如碳原子纤维和碳纳米管分子可以通过以下方式组装成基本上纯的对准纤维:a)将碳颗粒分散在可固化液体中,b)通过使可固化液体和碳颗粒的混合物向下流动来对准碳颗粒 锥形管,以及c)在锥形管的端部附近固化可固化液体和碳颗粒的流动混合物以形成纤维。 可固化液体可以使用紫外光固化。 可以通过d)加热纤维来使固化的混合物进一步加工,以使固化的可固化液体部分的挥发性元素从纤维基本上消散,e)加捻纤维以增加其密度,f)将纤维加热至烧结 纤维内的碳颗粒,以及g)包覆纤维。 然后将所得纤维卷绕到卷绕滚筒上。
    • 32. 发明授权
    • Structure for membrane damping in a micromechanical modulator
    • 微机械调制器中膜阻尼的结构
    • US5659418A
    • 1997-08-19
    • US597003
    • 1996-02-05
    • Bernard Yurke
    • Bernard Yurke
    • G02B26/00G02B26/08
    • G02B26/0833G02B26/0825
    • An improved micromechanical modulator that incorporates a mechanical transmission line for damping membrane vibration is disclosed. The modulator comprises a transmission line mechanically communicating with a vertically-movable membrane for receiving an optical signal. The membrane is supported over a substrate. Under the action of bias, the membrane moves toward the substrate, which causes a change in an optical property of the modulator. The transmission line receives and dissipates a sufficient amount of the energy developed in the membrane as it moves to prevent the membrane from vibrating. In one configuration, the modulator incorporates two strip-line transmission lines. In another configuration, the modulator incorporates two clamped-plate transmission lines.
    • 公开了一种改进的微机械调制器,其包括用于阻尼膜振动的机械传输线。 调制器包括与用于接收光信号的垂直移动膜机械连通的传输线。 膜被支撑在基底上。 在偏压的作用下,膜向衬底移动,这导致调制器的光学特性的变化。 传输线在移动时接收并消散在膜中产生的足够量的能量,以防止膜振动。 在一种配置中,调制器包含两条带状线传输线。 在另一种配置中,调制器包括两个夹板传输线。
    • 33. 发明授权
    • Methods and apparatus for a multi-electrode micromechanical optical
modulator
    • 多电极微机械光学调制器的方法和装置
    • US5646772A
    • 1997-07-08
    • US644350
    • 1996-05-10
    • Bernard Yurke
    • Bernard Yurke
    • G02B26/02G02B26/08G02B26/00
    • G02B26/08
    • A micromechanical optical modulator, and methods for operating the modulator are disclosed. The modulator has a membrane supported over a region of a substrate. At least two electrodes, and preferably more, are disposed on the membrane. Each electrode is in electrical contact with a controlled voltage source through a shift register for sequentially applying a voltage to the electrodes. An optical window for receiving an optical signal is defined between two adjacent electrodes. In operation, a voltage pulse is applied to the substrate and each of the electrodes. As the voltage is applied, an electrostatic force is generated, drawing the membrane towards the substrate and thereby generating a mechanical pulse in the membrane beneath each electrode. The pulses are propagated through the membrane to the optical window. The voltage pulses are timed so that the mechanical pulses reinforce one another creating a pulse or displacement in the membrane at the optical window equivalent to the sum of the pulses generated by each electrode. As the membrane is displaced from its initial position and moves toward the substrate, there is a change in an optical property of the modulator, such as its reflectivity to an optical signal. Thus, by changing the position of the optical window, relative to the substrate, an optical signal can be modulated.
    • 公开了一种微机械光学调制器和用于操作调制器的方法。 调制器具有负载在衬底的区域上的膜。 至少两个电极,优选更多地设置在膜上。 每个电极通过移位寄存器与受控电压源电接触,以顺序向电极施加电压。 在两个相邻的电极之间限定用于接收光信号的光学窗口。 在操作中,将电压脉冲施加到基板和每个电极。 当施加电压时,产生静电力,将膜拉向衬底,从而在每个电极下面的膜中产生机械脉冲。 脉冲通过膜传播到光学窗口。 电压脉冲被定时,使得机械脉冲相互加强,在光学窗口处产生脉冲或位移,等于由每个电极产生的脉冲之和。 当膜从其初始位置移动并朝向衬底移动时,调制器的光学特性(例如其对光信号的反射率)存在变化。 因此,通过改变光学窗口相对于衬底的位置,可以调制光信号。